Abstract: A fluid feed pump is configured, such that a fluid is fed from an outlet channel of the fluid feed pump through an outlet buffer chamber to a fluid channel. The outlet buffer chamber is designed to have a higher compliance than a compliance of a pump chamber. The driving period of the fluid feed pump is set to a shorter period than a time constant defined by the compliance of the pump chamber and a flow resistance between an inlet of the outlet channel and an outlet of the fluid channel. This enables the fluid to be fed with high efficiency by taking advantage of the pressure oscillation occurring between the pump chamber and the outlet buffer chamber.

Abstract: A pump chamber is connected to an outlet-side buffer chamber via an outlet channel, and pumps a liquid from the outlet-side buffer chamber. A pressure vibration generated within the pump chamber when the volume of the pump chamber is decreased includes various kinds of information relating to the operating states of the liquid feed pump, such as mixing of bubbles, pumping pressure, dissolved gas amount, and liquid feed amount. Thus, it is possible to detect the pressure vibration, thereby simply and easily detecting the various kinds of information relating to the operating states of the liquid feed pump.

Abstract: An electric compressor includes a housing, an electric motor, a compression mechanism, and a resin molding. The electric motor includes a coil having coil ends projecting from each of two end surfaces of the stator. Refrigerant flows through the housing that accommodates the electric motor. The resin molding covers each coil end and includes an opening that exposes part of the coil end to the interior of the housing.

Abstract: A direct-current (DC) electric fan configured for cooling purposes and for use in all places includes a base, a plurality of fixed-height interconnected inner and outer tubes extending upward from the base, and a driving motor provided in the base for driving the inner and outer tubes into reciprocal rotation, thereby simultaneously driving the fan unit mounted to each inner tube and between each two adjacent outer tubes to rotate over a predetermined rotation range. The blowing direction of each fan unit is also manually adjustable so that the blowing range of the fan can be adjusted and set according to personal needs.

Abstract: Vibration of a rotor positioned within a stator of an electric motor of an electric submersible pump assembly is attenuated in a first embodiment by adjusting the length of the rotor to position rotor bearings supporting the rotor within the stator at locations of low amplitude vibration. In a second embodiment, hydraulic pressure is applied to a fluid chamber supporting a thrust bearing that supports the rotor. When hydraulic fluid pressure is applied, the thrust bearing and the rotor move axially. Thus, moving the rotor bearings away from areas of high amplitude vibration of the rotor. In a third embodiment, a sliding mass affixed to the motor is moved in response to vibration of the motor. Movement of the sliding mass changes the vibration profile of the motor.

Abstract: A miniature motor includes a base having a coupling portion. An engaging portion is provided on a periphery of the base surrounding the coupling portion to form a concave surface therebetween. A stator coil unit includes a substrate mounted on the concave surface. A rotating member is rotatably coupled with the coupling portion and includes a permanent magnet. The base includes a thermoplastic section having a reduced opening. The reduced opening is formed by heating and deforming the thermoplastic section after the stator coil unit is mounted on the concave surface, and the molten and deformed thermoplastic section takes shape to form the reduced opening after cooling. The base can be connected to a frame having an air inlet and an air outlet to form a fan housing, and the rotating member includes blades to form an impeller, providing a cooling fan including the miniature motor.

Abstract: A fuel pump for deployment in a fuel system for an internal combustion engine comprises a 3-phase brushless direct current motor, a sling vane impeller with blade-shaped sling vanes, sensorless electronic motor drive and an electronic controller. The controller is adapted to receive analog or pulse-width modulation inputs to control pump speed.

Abstract: Disclosed is a hermetic compressor.

Abstract: An electrical power assembly comprises a motor lead with individual metal sheathed conductors, a power cable with individual metal sheathed conductors and a splice connector for connecting each of the conductors. Each splice connector has a tubular metal fastener body with an upward facing shoulder at an upper end and a downward facing shoulder at a lower end. A metal nut assembly is fixed to one of the power cable conductors with a downward facing shoulder in metal-to-metal sealing engagement with the upward facing shoulder of the fastener body. A metal coupler fixed to one of the motor lead conductors with an upward facing shoulder in metal-to-metal sealing engagement with the downward facing shoulder of the fastener body. Contacts electrically connect one of the motor lead conductors to one of the power cable conductors within the fastener body.

Abstract: Systems and devices for thermodynamically regulating portions of a dynamoelectric machine are disclosed. In one embodiment, a fan assembly element includes: an axially inner shroud segment configured to form a portion of an annular assembly about a rotor of a dynamoelectric machine, wherein the axially inner shroud segment includes a rotor hub interface configured to physically connect to a complementary portion of a rotor hub; a set of fan blades physically connected to and extending axially from a face of the axially inner shroud segment; and an axially outer shroud segment physically connected to the set of fan blades.

Abstract: A device for moving a fluid, including a moving part to move the fluid, and a synchronous motor, where the synchronous motor includes a stator with at least one stator coil and a rotor with at least one rotor magnet, and where the moving part can be driven directly by the synchronous motor and acts as its rotor.

Abstract: A centrifugal compressor includes a housing providing in inlet, an impeller, a diffuser and a volute or collector. An electric motor is provided in the housing and is configured to drive at least one impeller via a shaft about an axis. The impeller includes an outlet end aligned with a diffuser and arranged at the throat. A variable fluid injector device is arranged downstream from the outlet end of the impeller in one example. The variable fluid injector device is configured to introduce high pressure fluid downstream from the impeller in response to a compressor regulation command. The injected fluid energizes the low momentum boundary layer, which provides compressor stability. A compressor controller is in communication with the variable fluid injection device to obtain a desired compressor operating condition.

Abstract: A magnetic bearing assembly includes a lamination stack with coil apertures extending between opposing sides. A continuous unitary insulation layer is overmoulded onto the opposing sides and within the coil apertures providing a coil aperture lining. The insulation layer includes a wall within the coil aperture adjoining coil aperture lining and bisecting the coil aperture into first and second openings. A coil portion is disposed in each of the first and second openings and electrically isolated from one another by the wall. The magnetic bearing assembly is arranged in a refrigerant compressor that includes an electric motor rotationally configured to rotationally drive an impeller via a shaft. A controller is in communication with the magnetic bearing and configured to energize the coils and provide a magnetic field rotationally supporting the shaft.

Abstract: A turbocharger includes a turbine wheel, a compressor wheel connected thereto, an electric motor situated on the side of the compressor wheel which is distant to the turbine wheel, and a rotor connected to the compressor wheel in a rotationally fixed manner and designed in a freely projecting manner. A drive system for motor vehicles includes a turbocharger. The turbocharger is characterized by a very spontaneous response behavior, as well as the possibility for energy recovery.

Abstract: A coolant compressor has a hermetically sealed compressor housing, in the interior of which lies a piston cylinder unit that compresses a coolant. The cylinder housing of the piston cylinder unit is closed at the front end thereof by a cylinder head. A linear drive is provided, comprising at least one oscillating body which is surrounded by an excitation winding and which is connected to the piston to move same along a longitudinal axis in an oscillating manner. The piston cylinder unit has at least one first permanent magnet that lies on the piston, and at least one second permanent magnet that lies on the cylinder housing. Both magnets face each other and are oriented in the same magnetic pole direction in order to generate a repelling effect between both magnets to limit the path of the piston in the region of the top or bottom dead center.

Abstract: An electric pump may comprise a motor, an impeller driven by the motor, and a casing comprising a pump chamber that accommodates the impeller. The motor and the pump chamber may be disposed along a rotational axis of the impeller. The casing may comprise an intake port extending in a direction parallel to the rotational axis of the impeller and a discharge port extending in a direction perpendicular to the rotational axis of the impeller. The motor may have an oblong cross section that is perpendicular to the rotational axis of the impeller.

Abstract: Systems and methods including a valve piston in a pumping chamber. The pumping chamber may include a pump inlet and a pump outlet in fluid communication with the pumping chamber. The valve piston may be configured to rotate between a first position within the pumping chamber and a second position outside of the pumping chamber.

Abstract: A solenoid pump, including: an inlet port, an outlet port, and a first through-bore connecting the inlet and outlet ports; a plunger disposed within the first through-bore and including a second through-bore; a spring arranged to urge the plunger toward the outlet port; a solenoid coil disposed about a portion of the plunger and arranged to displace the plunger toward the inlet port in response to coil power applied to the solenoid coil; and a control unit for: accepting an input voltage; generating the coil power during an interval equal to a first time period; supplying the coil power to the solenoid coil; and selecting a duration of the first time period such that the duration of the first time period varies according to the input voltage.

Abstract: A cascade pump device may include a pump chamber, an impeller, a magnetic drive mechanism structured to rotate the impeller, and a pump case. The pump case is provided with two end faces located at both ends in an axial line direction and an intermediate part between the two end faces. The intermediate part is provided with a suction pipe and a discharge pipe and a wiring outlet part for taking out wiring lines for supplying an exciting current to a drive coil of a motor. The suction pipe and the discharge pipe are protruded in the same direction and the wiring outlet part is provided with a wiring line drawing-out guide part which determines a drawing-out direction of the wiring lines to the outer side. An angle between the drawing-out direction and a protruding direction of the suction pipe and the discharge pipe is less than 90° around the axial line.

Abstract: A pump device may include a stator provided with a stator core having a ring-shaped part on a center side and a drive coil wound around the stator core, and a partition wall disposed configured to separate a pump chamber from the stator. The partition wall is provided with a protruded part in a bottomed tube-like shape which is protruded on an inner side of the ring-shaped part and an outer peripheral face of a tube shaped part structuring the protruded part is formed with a plurality of protruding parts protruding to an outer side in a radial direction. The stator core is fixed to the protruded part in a state that the plurality of the protruding parts is press-fitted to the ring-shaped part.

Abstract: A pumping apparatus includes a housing having an inlet at a first end and an outlet at an opposite second end. An encapsulated stator defines an opening and is supported by the housing. A pressure plate includes diffuser vanes formed as part of the pressure plate. The pressure plate is formed as part of the encapsulated stator. A rotor is positioned at least partially within the opening and is rotatable with respect to the stator and an impeller is coupled to the rotor and cooperates with the pressure plate and the housing to pump a fluid from the inlet to the outlet in response to rotation of the rotor.

Abstract: The present invention relates to an electric compressor integrally including a compression mechanism and an electric motor, and an object thereof is to prevent the housing from being elongated in the axial direction and improve the sealability and the mountability of the compression mechanism. According to the present invention, a hermetic terminal (45) electrically connecting the electric motor (30) and a motor drive circuit (40) is attached within a swelled-space portion (50) swelled toward radial outside of a housing (11) so as to be continuous with a mounting bracket (17) of the housing (11). Accordingly, the distance between the compression mechanism and motor drive circuit can be shortened.

Abstract: A motor pump includes a base body, a pump, and a motor. The motor includes a tubular yoke having a bottom and an opening on a base body side, a bearing, a rotation shaft, a rotor, a commutator, a brush and a brush shaft. The bearing is fitted to an inside of a bearing hole of the base body, The brush holder is fitted to an inside of the yoke and engages with an outer peripheral surface of the bearing. The brush holder and the bearing are disposed so as to be spaced from the base body in an axial direction of the rotation shaft. The motor-side seal member is provided between the yoke and the base body. The base body constitutes a stopper that prevents the brush holder from being extracted from the yoke.

Abstract: A drive system for driving a fan in a wet cooling tower, wherein the fan has a fan hub and fan blades attached to the fan hub. The drive system has a high-torque, low speed permanent magnet motor having a motor casing, a stator and a rotatable shaft, wherein the rotatable shaft is configured for connection to the fan hub. The drive system includes a variable frequency drive device to generate electrical signals that effect rotation of the rotatable shaft of the motor in order to rotate the fan.

Abstract: A sealed compressor has an electric motor driving a compressor pump unit, and a shell enclosing the electric motor and compressor pump unit. An electrical connector with the shell supplies electrical power to the motor. A terminal housing is mounted to an outer surface of the shell, and a terminal plug is received within the terminal housing. The terminal plug has electric connections to connect into the electric connector within the shell. The housing includes a cover plate enclosing a chamber for the housing and which receives the terminal plug. A spring extends from the terminal plug, and reacts against a surface of the cover to bias the terminal plug to maintain the electric connection between the terminal plug and the electrical connector in the shell.

Abstract: An evaporative cooler 10 comprises a housing 12 defining an inlet 14 for air. An air cooling arrangement 16 located in the housing between the inlet and an inlet to a duct 18 extending to an air outlet 20. A bath 24 for water is located towards a bottom region of the housing. Ducting 22 extends from the bath to a liquid outlet 26 in a top region of the housing, for releasing liquid onto the air cooling arrangement. The bath is configured to capture the released liquid. A fan 30 cooperates with the duct 18 to draw air through the air inlet, the air cooling arrangement and into the duct towards the outlet. The same electrical motor 32 is used to drive both the fan and the rotor or impeller of a water pump 34 for moving the liquid from the bath to the liquid outlet.

Abstract: A sealed compressor has an electric motor received within a hermetically sealed shell. The electric motor drives a compressor pump unit. An electric connection provides electric power to the motor. A terminal housing is mounted on the shell, with a terminal plug for supplying electrical power from outside of the shell into a connector within the shell. A grommet is at an opening in the shell which allows passage of the electric connector from the terminal plug to the electric connection. The grommet has a first surface positioned on an opposed side of a wall of a housing spaced from the shell, and a second surface sealing against the shell. The grommet has an interior portion allowing passage of the electrical connections from the terminal plug into the electric connector within the shell.

Abstract: An axial flow compressor includes: an electric motor including a rotating shaft; a compression portion including a driving shaft connected without a speed-up gear to the rotating shaft of the electric motor and a rotor rotating together with the driving shaft, the compression portion driving the driving shaft and thereby compressing a working fluid; and a velocity reducing portion having a space for reducing the flow velocity of a working fluid discharged from a discharge opening of the compression portion. The rotating shaft of the electric motor is connected to the end of the driving shaft on the side of the discharge opening; and the velocity reducing portion is disposed so as to surround the electric motor.

Abstract: A horizontal type electrically driven gas compressor includes an electric motor installed in a suction chamber of a housing, a gas compression mechanism section installed in the housing and driven by the electric motor, a sucked refrigerant guide path for guiding a refrigerant from the suction chamber to the gas compression mechanism section, and a lubricating oil supply path for supplying a lubricating oil, which has been collected and stagnated in a bottom portion of the suction chamber, to the sucked refrigerant guide path, the lubricating oil supply path fluidly connecting the sucked refrigerant guide path and the bottom portion of the suction chamber at the position of the bottom portion of the suction chamber.

Abstract: A mounting apparatus for a cooling device is disclosed. The mounting apparatus includes a plurality of connectors extending outwardly from the cooling device. The mounting apparatus also includes at least one mounting post coupled to the plurality of connectors and configured to mount the cooling device on a substrate.

Abstract: The invention relates to a pump (1) for conveying of a fluid from an intake region (2) to an outlet region (3) which has a housing (4) and at least one rotor (6) which is arranged rotatable around an axis of rotation (5) and which can be driven by a driving element. To obtain a high degree of efficiency the pump according to the invention is characterized in that the rotor (6) has a bore (7), that a piston element (8) is arranged in the bore which can move along the longitudinal axis (L) of the bore and that a plurality of magnets (9, 9?, 9?, . . . ) or a ring magnet is arranged stationary in the housing (4), wherein the magnets or the ring magnet exert a magnetic attractive force on the piston element (8), wherein the magnets (9, 9?, 9?, . . . ) or a ring magnet are arranged in such a manner in the housing (4) that the piston element (8) carries out an oscillating movement (O) in the bore (7) during rotation of the rotor (6) around the axis (5) due to the magnetic attractive force.

Abstract: An elastomeric-based device configured for use in high temperature downhole environments exceeding about 400° F. The device includes a carbon nanotube mesh configured to dissipate heat relative elastomeric portions thereof so as to provide temperature resistance. Thus, a majority of modulus strength of the elastomeric portions may be maintained along with device functionality even upon exposure to such temperatures. Further, the mesh may also be configured to mimic the modulus character of elastomeric portions to allow a cohesive compliance to the device as a whole. Thus, isolation packers and other expansive downhole devices may particularly benefit from such combined material configurations as detailed herein.

Abstract: An electric motor driven fan device has a base member with walls forming an enclosure, an electrically powered motor located within the enclosure and having an output shaft coupled via a bearing mounted in an upper wall of the base member to one end of a flexible drive shaft rotatably enclosed in a bendable sheath secured to the base member. The other end of the flexible drive shaft is coupled via a second bearing to a driven shaft secured to a multi-bladed fan. The other end of the bendable sheath is secured to the outer race of the second bearing. The predominant mass of the device is at the bottom, which reduces the footprint of the lower portion. The bendable sheath enables the attitude of the fan to be manually adjusted.

Abstract: A vacuum pump comprises pumping elements arranged in a pumping chamber. An electric motor drives the pumping element. A frequency inverter is provided for changing the rotational speed of the electric motor. The frequency inverter is arranged in a frequency inverter housing immediately connected to the pump housing. An air cooler and a liquid cooler are arranged in the frequency inverter housing to cool the frequency inverter.

Abstract: A machine includes at least two compressors that is controlled by a compressor controlling apparatus. By using an inverter for the at least two compressors, the use of elements is minimized and the compressor capacity may be increased, and the operation efficiency of the system may be enhanced. As an example, a plurality of operation modes may be used according to a load or cooling capacity of the two compressors. The two compressors are separately or simultaneously operated by using the inverter, thus simplifying the configuration of the system, and reducing cost.

Abstract: A male terminal is provided in a terminal hole formed in a flange unit. A female terminal and a grommet having a sealing portion to be fitted into the terminal hole are provided to a harness. A distance from an end of the sealing portion to a fore-end of the female terminal is set smaller than a distance from a fore-end of the male terminal to an opening of the terminal hole. With such setting, the grommet is retained in the terminal hole even if the female terminal is disconnected from the male terminal, thereby ensuring support of the female terminal. Moreover, a stopper is attached so as to cover the terminal hole to prevent the grommet from slipping out of the terminal hole.

Abstract: Provided is a vibrating device which can generate efficient vibrations in a vibrating member and efficiently apply vibrations to a gas, a jet flow generating device in which the vibrating device has been implemented, and an electronic device in which the jet flow generating device has been implemented. A jet flow generating device 10 has a vibrating device 15 including a frame 4, and actuator 5 mounted on the frame 4, and a vibrating member 3 supported on the frame 4 by an elastic supporting member 6. The vibrating member 3 has a side plate 3b formed on the perimeter portion of a disc-shaped vibrating plate 3a, for example. Vibration of the vibrating member 3 applies vibrations to air within chambers 11a and 11b, whereby gas can alternatingly be blown from nozzles 2a and 2b.

Abstract: A motor-driven compressor includes a compression mechanism, an electric motor, a compressor housing, a conductive member, a terminal base, an insulating member, a connection terminal, a wire assembly, a terminal housing, first and second holes formed through the terminal housing and first and second seal members. The conductive member extends from the inside to the outside of the compressor housing and connected electrically to the connection terminal at a terminal connection. The wire assembly has a core wire connecting electrically between the connecting terminal and the electric motor, and an insulator covering the core wire. The terminal housing disposed in the compressor housing covers the terminal connection. The wire assembly has an insulating tube covering the insulator, wherein both ends of the insulating tube are opened for communicating with the inside and the outside of the terminal housing through a clearance formed between the insulating tube and the insulator.

Abstract: The invention relates to a rotor for a wind turbine of the type having a rotor hub (8) and a set of rotor blades (9). Each rotor blade (9) is rotatably mounted on the rotor hub (8) for rotation about a blade axis (11). A threaded spindle mechanism (13) interconnects the rotor blade (9) and the rotor hub (8). The threaded spindle mechanism (13) includes a spindle nut (32), a threaded spindle (31) and a drive (21) mounted on the rotor blade (9) adjacent a transition between the rotor hub (8) and the rotor blade (9). The drive (21) is rotatable together with the rotor blade (9) about the blade axis (11) relative to the rotor hub (8) by actuation of the threaded spindle mechanism (13).

Abstract: An impeller of the present invention includes a front surface shroud including an air intake port; a back surface shroud provided facing the front surface shroud; a first inducer provided between the front surface shroud and the back surface shroud and including a plurality of first blade sections provided around a first hub portion; a second inducer including a plurality of second blade sections connected to the first blade section of the first inducer and provided around a second hub portion; and a plurality of blades connected to the second blade section of the second inducer. A multi-blade structure of the inducer thus can be realized, and an impeller of high performance and low noise can be provided.

Abstract: An autonomous self-powered system for cooling radioactive materials comprising: a pool of liquid; a closed-loop fluid circuit comprising a working fluid having a boiling temperature that is less than a boiling temperature of the liquid of the pool, the closed-loop fluid circuit comprising, in operable fluid coupling, an evaporative heat exchanger at least partially immersed in the liquid of the pool, a turbogenerator, and a condenser; one or more forced flow units operably coupled to the closed-loop fluid circuit to induce flow of the working fluid through the closed-loop fluid circuit; and the closed-loop fluid circuit converting thermal energy extracted from the liquid of the pool into electrical energy in accordance with the Rankine Cycle, the electrical energy powering the one or more forced flow units.

Abstract: In an inverter control apparatus in which a control circuit board is fixed by use of pin-like terminals provided in a power board, the breakage of the pin-like terminals is prevented. The power board 160 is provided with a plurality of signal transmission terminals 210a, 210b, 220a, 220b for signal transmission to and from the control circuit board 150 and for grounding along each of a pair of opposed sides, the control circuit board 150 is electrically connected to the plurality of signal transmission terminals 210a etc. and is fixed by soldering to the plurality of signal transmission terminals 210a etc., and the plurality of signal transmission terminals 210a etc. are arranged along each of the pair of sides in a plurality of rows.

Abstract: The present invention relates to a modulating liquid pump. This pump comprises an inlet port for receiving a liquid and an outlet port for delivering said liquid, an electromagnetic pump placed between the inlet port and the outlet port and comprising a piston for pumping said liquid, said modulating pump further including a regulating means, for regulating the pressure of the liquid. This pump is noteworthy in that said regulating means is of the electric type and is capable of regulating the travel of said piston according to an electrical setpoint signal (Vc). Application to fuel oil burners.

Abstract: An air feed blower, especially for a vehicle heater, includes an electrically driven blower drive motor (14) as well as an air feed wheel (16) that can be driven by the blower drive motor (14), wherein the blower drive motor (14) is electrically contacted with the use of spring contacts (34).

Abstract: A sealed compressor comprises an electric element; a compression element; and a sealed container accommodating the electric element and the compression element; wherein the compression element includes a cylinder block defining a compression chamber; a piston which is reciprocatable inside the compression chamber; and a valve plate disposed to close an opening end of the compression chamber and having a discharge hole which provides communication between inside and outside of the compression chamber; the piston has a first groove on a tip end surface thereof which faces the valve plate, the first groove having a predetermined width and extending from an outer peripheral edge portion of the tip end surface toward a portion of the tip end surface which faces the discharge hole; and a tip end portion of the first groove is positioned in the portion of the tip end surface which faces the discharge hole and is inclined.

Abstract: A system includes a high pressure accumulator; a low pressure reservoir; and a plurality of pumps configured to control the flow of fluid between the high pressure accumulator and the low pressure reservoir, a battery; an electric motor powered by the battery; a management unit in communication with the electric motor and the plurality of pumps.

Abstract: A heat-dissipation fan includes a first plate, a second plate, a ring wall, a spacing rib, a stator and a fan wheel. The first plate comprises a vent, and an accommodating space can be defined by the first plate, the second plate and the ring wall. The spacing rib is disposed at the accommodating space. A passage is formed between the spacing rib and the ring wall, and an end portion of the spacing rib and the ring wall are spaced apart to form an opening. The passage is in communication with the vent, and the opening is in communication with the passage and the accommodating space. The fan wheel can be driven by the stator, and the dust adhered to the accommodating space may be discharged through the opening, the passage and the vent via airflow generated by rotating fan wheel.

Abstract: A hydraulic supply system for a hydraulically-operated automatic transmission includes a primary pump that is driven by an internal combustion engine of a vehicle. An electrically-driven auxiliary pump is provided to supply the system with hydraulic pressure when the primary pump is off or to supplement the primary pump when the primary pump does not deliver sufficient pressure. A discharge line from the auxiliary pump is connected to a control line of the hydraulic supply system and to the hydraulic system supply line under system pressure. Check valves are provided in the respective lines from the auxiliary pump. An additional check valve is provided in a line that extends from the control line to a torque sensing chamber of the automatic transmission.

Abstract: In accordance with one aspect of the present invention, an electric motor is provided that includes a housing, a stator, and a rotor, wherein the stator and rotor are disposed within the housing. The housing, the stator, and the rotor define an internal volume within the housing, said internal volume configured to receive a dielectric fluid. The electric motor further includes at least one electric cable configured to electrically power the electric motor, wherein the electric cable includes at least one electrical conductor disposed within at least one protective layer, and wherein the electrical conductor and the protective layer define at least one channel configured to deliver the dielectric fluid to the internal volume. An electric submersible pump system is also provided.

Abstract: A plural component pump system is provided for delivering plural liquid components at a selected ratio. The pump system includes a first brushless DC motor configured to drive a first pump that pumps a first liquid component to an output and a second brushless DC motor configured to drive a second pump that pumps a second liquid component to the output. The pump system includes a first controller configured to control the first motor and a second controller configured to control the second motor. The pump system also includes a communication interface between the first controller and the second controller. The first controller is configured to send a signal to the second controller using the communication interface and the second controller is configured to control the second motor based on the signal to deliver the first and second liquid components to the output at the selected ratio.