Abstract: Presently disclosed embodiments are directed to systems and apparatuses comprising a stator core having air flow slots for cooling. Specifically, the disclosed embodiments utilize a stator comprising laminated core having an inner circumference, a plurality of winding slots in the laminate core extending radially from the inner circumference, at least one air flow slot in the laminate core, wherein the at least one air flow slot is fluidly connected to at least one winding slot, and a winding located in the plurality of winding slots.

Abstract: A stator core is assembled by stacking stator core laminations on pipes spaced in regular intervals circumferentially from one another around the outer peripheral edge of the stator core. The laminations are held on the pipes using crimps in the pipe at either end of the stack length. The stator can be integrated inside an electric motor in such a manner as to greatly enhance the cooling capabilities, and will improve the manufacturing quality of the stator core. Further, cooling media can be passed through the pipe to increase the cooling effect.

Abstract: In accordance with presently disclosed embodiments, an arc resistant exhaust and intake for medium and high voltage switchgear is provided. In one embodiment, an arc resistant drive system may comprise: a drive cabinet comprising a vent; and an arc resistant shutter plate assembly coupled to the drive cabinet and aligned adjacent to the vent, wherein the arc resistant shutter plate assembly comprises a plurality of shutter plates configured to automatically transition from an open position to a closed position when air pressure inside the drive cabinet exceeds a predetermined value, such that the shutter plates substantially restrict air flow through the vent in the closed position.

Abstract: In accordance with presently disclosed embodiments, a front access battery tray is provided. In one embodiment, the front access battery tray comprises a base having a front edge, two side edges, and a back edge; a pair of side panels extending substantially perpendicularly from the side edges of the base, each side panel comprising a top edge and an outer surface, wherein at least one retainer peg extends away from each outer surface; a pair of flanges extending from the top edge of each side panel, each flange comprising an inner lip; a back panel extending substantially perpendicularly from the back edge of the base; and a retainer bracket detachably coupled to at least one of the retainer pegs on the side panels.

Abstract: The presently disclosed embodiments are directed to an improved communication system that may have a plurality of control board modules and a display. The object of the disclosure is to transfer critical communication from the critical communication channel to the non-critical communication channel in the event of communication failure in the critical communication channel. Another object of the disclosure is to share data transfer between communication channels in order to manage bandwidth and system reliability.

Abstract: Present embodiments of the disclosure are directed to a zero-footprint charging station for use with vehicles having quick-charge batteries. The disclosed embodiments enable the “quick-charge” power conversion equipment to disappear entirely into a passenger station structure. The passenger station structure may include a structural component of a bus stop (or other vehicle station) that is designed to accommodate passengers waiting to board the bus (or other transportation vehicle). By housing the power conversion electronics within a larger structure that serves a purpose at the vehicle station, the system may enable larger amounts of power electronics to be incorporated into a relatively strong and stable structure conforming to a desired size for the area (e.g., bus stop).

Abstract: A self-aligning system for joining electronic cabinets to ensure alignment and prevent rotation and deformation is disclosed. Paired aligners, each comprising complementary alignment tabs and alignment notches, are brought together such that angled portions of the alignment tabs guide the opposing aligner into position, ensure proper alignment of the electronic cabinet structure, and prevent rotation of the aligners and structures as the aligners are brought together.

Abstract: In accordance with presently disclosed embodiments, uninterruptable power supplies and a method for detecting power failures for a UPS are provided. In one embodiment, the method comprises: detecting at least a portion of a waveform of a primary power input of an uninterruptable power supply; calculating at least one of a detected voltage value and a detected current value, based, at least in part, on the detected waveform by calculating at least one of a root mean square, an average, or a summation of the detected waveform; and transferring the uninterruptable power supply to a secondary power input in response to at least one of the following conditions: the detected voltage value is lower than a minimum threshold voltage value, the detected voltage value is higher than a maximum threshold voltage, or the detected current value is higher than an over current value.

Abstract: In accordance with presently disclosed embodiments, a multi-mode energy router (MMER) is provided. The MMER includes a functional block of power electronics under processor control. In addition, the MMER includes a plurality of switches that can be controlled to route power from specific sources or loads to the input or output of the functional block. The MMER enables a single functional block of power electronics to selectively provide bi-directional power conversion between AC and DC components and between DC and DC components.

Abstract: A door latching system provides an arc resistant door for a power electronics cabinet. The door latching system includes a six point latch to secure the door in place against the frame of the cabinet. The door latching system includes two vertical linkages coupled to a door handle mechanism, the door handle mechanism being able to impart a vertical motion to the vertical linkages as the handle is turned. The latching system allows for this vertical motion to then become horizontal motion for closing several latches between the vertical frame of the cabinet and the door.

Abstract: In accordance with presently disclosed embodiments, a system and method for controlling the temperature of medium-voltage power electronics assemblies (i.e., medium-voltage drives) is provided. The disclosed system generally includes a medium-voltage drive having one or more cabinets with power electronics devices disposed therein, one or more fans for circulating air through the cabinet to cool the devices, and one or more space heaters disposed in the cabinet. The drive also features temperature sensors used to measure various temperatures of the drive, a controller communicatively coupled to the sensors, and one or more variable frequency drives (VFD) for the fans. The controller may receive measurements regarding the ambient and power device temperatures and apply controls to vary the space heater power and fan speed in response to environmental changes.

Abstract: The presently disclosed embodiments are directed to an improved mechanical arrangement of a drawout power module system that prevents outside contaminants from being deposited on the electronic components in the power module. A need exists for an improved mechanical arrangement of a power module and cabinet that would prevent the contaminants from outside of the cabinet from being deposited on the electronic components in the power module. To that end, the outdoor drive may include a cabinet with an air intake and an air outlet located on said cabinet and in fluid communication with an interior space of said cabinet, wherein said cabinet is configured to receive a power module within said interior space. The power module may include an environmentally sealable chamber where outside air can enter and exit only said environmentally sealable chamber of said power module.

Abstract: In accordance with certain presently disclosed embodiments, a multidirectional fan is provided. In certain embodiments, the multidirectional fan comprises a back plate having an interior surface and a central opening; a hub located around the central opening and projecting from the interior surface of the back plate; a plurality of flexible fan blades extending radially from the hub, wherein each flexible fan blade comprises a base and a blade, and wherein the base of each flexible fan blade is attached to the hub and the interior surface of the back plate; and a plurality of fasteners located at least partially on the interior surface of the back plate, wherein each fastener secures the blade of at least one flexible fan blade to the interior surface of the back plate at a predetermined position.

Abstract: Presently disclosed embodiments are directed to an adjustable-speed drive comprising a transformer module and an inverter module configured for installation in either of a side-by-side or stacked configurations. The disclosed embodiments utilize a modular design for the transformer and inverter modules. Thus, the adjustable-speed drive is capable of being installed in either of a side-by-side configuration or a stacked configuration. This modular design allows for installation at a site in accordance with the space limitations of any given location.

Abstract: In accordance with presently disclosed embodiments, a 5-switch power conversion circuit that improves the power conversion efficiency (PCE) of a DC-DC converter with a double chopper topology is provided. The power conversion circuit adds minimal complexity through an additional switch, while preserving the benefits of a 3-level boost converter topology. The disclosed power conversion circuit uses four switches that are arranged in a 3-level boost converter arrangement, and a fifth switch that is connected in parallel with two of the other switches. The fifth switch helps to reduce the conduction power losses through the DC-DC converter by providing a one-switch ON-state conduction path instead of a two-switch path during part of the DC-DC power conversion cycle.

Abstract: A demand-based load balancing function may be provided by one or more drive controllers that takes advantage of the affinity laws to linearize the control of the variable of interest (e.g., flow, pressure, etc.). Each drive controller may be set up by the user simply inputting a few values into the drive controller. Based on the inputs, the drive controllers may interpolate control points using an assumed linear relationship between the variable to be controlled (e.g., pressure) and the current driven to the pump. Feedback data from the system may be used to continually update the drive controllers so as to potentially allow them to better balance power usage to each pump.

Abstract: Presently disclosed embodiments are directed to a system and method for loading mail trays in a sorter without human intervention. Specifically, the disclosed embodiments utilize an automated mail tray having a bottom plate that is selectively moveable between an elevated position and a lowered position. The automated mail tray may be positioned on a shelf under a corresponding output pocket of a mail stacker, and the bottom plate may be elevated to receive mail product transferred from the output pocket to the automated mail tray. After receiving the mail product on the elevated bottom plate, the bottom plate of the mail tray may be lowered so that the mail product is transferred from the output pocket to a position fully situated in the automated mail tray. The mail tray filled with mail product may then be removed from the shelf and replaced with an empty automated mail tray.

Abstract: Presently disclosed embodiments are directed to a system and method for controlling/adjusting a position of mail product or other contents in an automated mail tray. Specifically, the disclosed embodiments utilize an automated mail tray with a ridged construction to allow automation equipment to adjust, load, and unload mail product in a structured manner. An adjustment feature, along with a moveable bottom surface of the mail tray, may be used to adjust a position of mail product in the automated mail tray into a vertical position. In some embodiments, the system may actuate the adjustment feature in response to sensor feedback that the mail product has fallen from the vertical position. Once the mail is in the vertical position, the moveable tray bottom may lift the mail product until it is elevated out of the tray for movement into other automation equipment without tray wall interference.

Abstract: In accordance with presently disclosed embodiments, an uninterruptable power supply (UPS) is provided. The UPS utilizes two chambers, one which is pneumatically sealed to house control electronics, and one that is not sealed that houses transformers. The pneumatically sealed compartment is cooled through a heat exchanger or air conditioner as well as through a heat sink. The chamber which houses the transformers is cooled by a fan which circulates air from outside the chamber through the chamber and out vents in a wall of the chamber. The UPS may utilizes a series of ducts to direct air flow into the chamber housing the transformers in such a way that the air enters the bottom of the chamber past the control electronics and through vents near the front of the chamber. The UPS may utilize a series of ducts to direct air flow past the heat sink attached to the pneumatically sealed chamber.

Abstract: In accordance with presently disclosed embodiments, a multi-mode energy router (MMER) is provided. The MMER includes a functional block of power electronics under processor control. In addition, the MMER includes a plurality of switches that can be controlled to route power from specific sources or loads to the input or output of the functional block. The MMER enables a single functional block of power electronics to selectively provide bi-directional power conversion between AC and DC components and between DC and DC components.