Abstract: A temperature actuated switch (1) includes: first and second temperature sensing sections (10, 20) that each include a contact (12, 22) and a thermally deformable member (first bimetal 11, second bimetal 21) that is bent in accordance with a temperature rise from a normal temperature in a manner such that the contacts (12, 22) shift from an open state to a connected state, the contacts (12, 22) being provided on a free-end side and located on the individual surfaces of the first and second temperature sensing sections that face each other; first, second, and third terminals (31, 32, 33) connected to an external circuit; and an insulation section (40) that maintains the first, second, and third terminals (31, 32, 33) in an insulated state, wherein the first temperature sensing section (10) includes first and second regions (A1, A2) with a slit (13) that extends from a fixed-end side to the free-end side provided therebetween, the first terminal (31) is connected to the first region (A1), the second terminal (3

Abstract: In an electrical distribution system including a solid-state circuit breaker (SSCB) and one or more downstream mechanical circuit breakers (CBs), a solid-state switching device in the SSCB is repeatedly switched ON and OFF during a short circuit event, to reduce a root-mean-square (RMS) value of the short circuit current. The resulting pulsed short circuit current is regulated in a hysteresis control loop, to limit the RMS to a value low enough to prevent the SSCB from tripping prematurely but high enough to allow one of the downstream mechanical CBs to trip and isolate the short circuit. Pulsing is allowed to continue for a maximum short circuit pulsing time. Only if none of the downstream mechanical CBs is able to trip to isolate the short circuit within the maximum short circuit pulsing time is the SSCB allowed to trip.

Abstract: A modular multi-level converter including modules each having switching elements and at least one electrical energy storage element, wherein a first number of modules are interconnected to form a closed ring, and at least two taps are arranged between respective adjacent individual modules of the closed ring. Wherein at at least two taps respectively a second number of modules are provided as a phase module branching off from the closed ring and forming a star string comprising at least two modules, the phase module connected to the respective tap on one end and forming a phase terminal at an other end. Wherein the switching elements enable interconnection of energy storage elements of adjacent modules, as a result of which between two adjacent phase terminals a voltage difference is provideable, which is regulatable by a control unit in accordance with a polyphase rotating field profile.

Abstract: An arrester such as an arrester for protection against overvoltages is disclosed. In an embodiment an arrester includes a housing configured to act as an external electrode, a central electrode arranged completely within an inner region of the housing, a discharge region arranged between the central electrode and the housing, a ceramic body separating the housing and the central electrode, wherein the ceramic body is arranged in an offset manner relative to the discharge region and a shielding element arranged on an inside of the housing, and wherein the shielding element extends over an entire longitudinal extent of the central electrode along the inside of the housing.

Abstract: An electrical machine includes a stator including a plurality of stator windings; and a rotor in magnetic cooperation with the stator. The rotor includes a plurality of cooling passages extending therethrough, each cooling passage including an inlet for receiving oil and an outlet for discharging the oil. The electrical machine includes a rotating oil distribution member coupled to the rotor, the oil distribution member including a radially inward portion and a radially outward portion, the radially outward portion being disposed adjacent to the inlets of the plurality of cooling passages. A stationary oil delivery nozzle is constructed to discharge oil toward the radially inward portion of the oil distribution member. The oil distribution member is constructed to receive the oil discharged by the oil delivery nozzle, and to direct the oil to the inlets of the cooling passages to cool the rotor.

Abstract: Pulse power supply systems and methods are disclosed. A method includes providing earth-ground-referenced control circuitry and providing floating pulsed-power circuitry. The method also includes providing a DC offset voltage to the return port of the pulsed-power circuitry with a DC offset module and providing a peak voltage to the pulsed-power circuitry with a DC voltage source. Power is applied from a power source of the control circuitry to a driver of the pulsed-power circuitry via a galvanically-isolating power path and a trigger signal is applied from the control circuitry to the driver via a galvanically-isolated signal path to prompt the driver to produce a driver signal. A voltage pulse is produced between the output port and the return port by closing the switch with the driver signal to couple the peak voltage to the output port.

Abstract: A circuit includes a power stage circuit configured to perform power conversion of an input voltage to provide an output voltage at an output. The circuit further includes a driver circuit configured to drive the power stage circuit to provide the output voltage. The circuit further includes a load transient dynamic compensator configured to detect a rate of change in the output voltage during load transient and to supply a compensating signal based on the rate of change. The circuit further includes a feedback control circuit configured to generate a series of pulses to control the driver circuit based on the output voltage and the compensating signal.

Abstract: A gate drive circuit, which drives a gate of a first transistor, includes a first switch on a high potential side and a second switch on a low potential side connected in series at a second connection node between a high potential end and a low potential end of a series connection structure, constituted of a first voltage source and a second voltage source connected in series at a first connection node; and a third switch and an inductor connected in series between the first connection node and the second connection node. The gate of the first transistor can be electrically connected to the second connection node.

Abstract: In an isolated DC-DC converter, in response to a switching transistor connected to the primary winding of a transformer turning off, a turn-on control circuit turns on a synchronous rectification transistor on the secondary side. A turn-off control circuit determines the turn-off time point of the synchronous rectification transistor by charging a capacitor with a current commensurate with the magnitude of an induced voltage appearing in the secondary wiring of the transformer during the on-period of the switching transistor and, after the synchronous rectification transistor turns on, discharging the capacitor with a current commensurate with the output voltage of the DC-DC converter.

Abstract: A rotor core has a plurality of magnetic steel sheets laminated in an axial direction. Cooling passages extending in an axial direction are formed by aligning openings of the plurality of magnetic steel sheets. The cooling passages have axial direction passages that communicate at one end. A coolant inlet is then formed in one passage, and coolant outlets are formed in the other passages.

Abstract: An electronic converter includes first and second inputs, first and second outputs, and a switching cell configured to supply current. The switching cell includes a half-bridge including first and second switches connected in series between the two inputs. The half-bridge includes a intermediate point between the first and second switch, a first inductor directly connected to the first output, a second inductor connected to the intermediate point, a first capacitor connected in series with the first and second inductors, a second capacitor connected between the intermediate point and the second input, and a circuit connected between a terminal of the first inductor and the second output. A circuit path of the converter is configured to couple the second inductor with the first output through the first capacitor and the first inductor, and another circuit path is configured to couple the second capacitor with the first output through the first inductor.

Abstract: A detection error occurs due to ripple when a current transformer detects zero cross of current. Provided is a detection device for detecting zero cross of output current output from switching circuit including a first switching element and a second switching element connected in series, and the detection device has: an acquisition unit which acquires an observation value that is based on gate current or an observation value based on gate voltage of at least one switching element of the first switching element and the second switching element, during Miller period in which Miller capacitance between a drain and a gate is charged; and a detection unit which detects zero cross of output current flowing between (i) output terminal between first switching element and second switching element and (ii) a load connect to output terminal, based on observation value during Miller period.

Abstract: Disclosures of the present invention describe a switch device has a controlling and processing unit comprising a first zero point detector, a second zero point detector, an arc detector, and a microcontroller. According to zero crossing point of input voltage signal, zero crossing point of output voltage signal, relay's delay time, and arc-spark-induced signal, the microcontroller is capable of adaptively generating a relay controlling signal to control the relay, such that the relay achieves a short-circuit switching at the zero cross point of output voltage signal for making the output voltage signal be transmitted to at least one load device. Moreover, the microcontroller is also able to control the relay to finish a short-circuit switching at the zero cross point of input voltage signal, so as to stop the output voltage signal from being transmitted to the load device.

Abstract: A leakage protector comprises a housing, a rotating member, a MCU (Microprogrammed Control Unit), an electromagnet, and a leakage protection module. The rotating member, the MCU, the electromagnet and the leakage protection module are all disposed in the housing. The housing is provided with an input terminal and an output terminal. The MCU is configured to perform power supply through the input terminal. The leakage protector has a compact structure while reducing the cost, and effectively reduces the occupied space.

Abstract: A switching regulator configured to generate a level-controlled output voltage from an input voltage, the switching regulator includes an inductor, an output capacitor configured to generate the level-controlled output voltage based on a current flowing through the inductor, at least two flying capacitors, and a plurality of switches configured to form electrical connections when the switching regulator operates in a first operating mode to, alternately charge each of the at least two flying capacitors using the input voltage, and provide a first boosted voltage to the inductor using a charged flying capacitor among the at least two flying capacitors.

Abstract: A power transformation system that is constructed and arranged to transform power from one or more primary voltage nodes to a separate secondary voltage node using one or more columns comprised of a plurality of capacitive modules each of which is capable of being either electrically inserted into the column or electrically isolated and electrically bypassed. There is a secondary voltage node, at a non-ground potential, to which a first end of the column is electrically connected. In the two-primary node example there are two high voltage switches, each in series with a reactor; one high-voltage switch adapted to electrically connect a second end of the column to the first primary voltage node and the other high-voltage switch adapted to electrically connect the second end of the column to a second primary node.

Abstract: A compensator is described with higher bandwidth than a traditional differential compensator, lower area than traditional differential compensator (e.g., 40% lower area), and lower power than traditional differential compensator. The compensator includes a differential to single-ended circuitry that reduces the number of passive devices used to compensate an input signal. The high bandwidth compensator allows for faster power state and/or voltage transitions. For example, a pre-charge technique is applied to handle faster power state transitions that enables aggressive dynamic voltage and frequency scaling (DVFS) and voltage transitions. The compensator is configurable in that it can operate in voltage mode or current mode.

Abstract: An electrostatic discharge protection device includes a substrate, a high-voltage N-well region, and a high-voltage P-well region. The substrate includes a first area and a second area which surrounds the first area. The first area is disposed on the high-voltage N-well region and includes a first doped region having a first conductivity type, a second doped region having a second conductivity type which surrounds the first doped region, and a third doped region having the first conductivity type which surrounds the second doped region. The second area is disposed on the high-voltage P-well region and includes a plurality of fourth doped regions having the second conductivity type and a fifth doped region having the first conductivity type. The plurality of fourth doped regions are arranged at intervals and surround the first area. The fifth doped region surrounds the first area and each of the plurality of fourth doped regions.

Abstract: Provided is multi-phase interleaving control in a power supply device. In power control by the power supply device where the dead beat control is applied to the multi-phase interleaving, combined current of the multi-phase current values is used as control current in the multi-phase control based on the multi-phase interleaving, thereby achieving control independent of the number of the detectors and the control system independent of the number of phases, and further, this control current is used to perform constant current control, so as to prevent overshooting and undershooting. The power supply device has multi-phase interleaving control that performs multi-phase control using a plurality of phase current values, provided with an LC chopper circuit constituting a step-down chopper circuit that operates according to the multi-phase control of multi-phase interleaving, and a controller for performing step response control according to the multi-phase control of the LC chopper circuit.

Abstract: This invention relates to a stator for an axial flux electromagnetic machine, with the stator forming a ring (1) having two substantially circular faces (1a, 1b) connected by a thickness comprising windings (3) regularly distributed in the ring (1). Each winding (3) is carried by a unit portion (4) having a core (5) around which the winding (3) is wound. The unit portions (4) are arranged concentrically edge-to-edge with respect to one another and have securing means (12, 12a, 14) with a support member (6) which is part or not of a casing housing the ring (1) carried either by axial and lateral faces of each unit portion (4) edge-to-edge or by at least one upper or lower face of with each unit portion being part of a substantially circular face.