Abstract: This disclosure is directed to an anti-moment machine and a moment resisting device thereof, device. The anti-moment machine has a machine body and at least one pair of moment resisting device. The moment resisting devices are respectively arranged on two sides of the machine body oppositely. Each moment resisting device has a base, a bracket, an elastic arm and a damper. The elastic arm is respectively connected to one side of the base and a bottom of the bracket, and an obtuse angle is defined between the base and the bracket. The damper is connected between the base and the bracket. The machine body is applied preload moments and preload lateral forces from the moment resisting device respectively to balance the moment in the machine body and reduce vibrations of the machine body.

Abstract: The present disclosure provides a power converter including a transformer, a first current detection circuit and a rectifier circuit. The transformer includes a primary side winding and a secondary side winding coupled to each other. The first current detection circuit is electrically connected in parallel to the secondary side winding and includes a first auxiliary winding, a first switch and a first impedance device electrically connected in series. The first auxiliary winding is coupled to the secondary side winding. The rectifier circuit includes a first bridge arm and a second bridge arm electrically connected in parallel. The first bridge arm includes a second switch and a third switch electrically connected in series, and the second bridge arm includes a fourth switch and a fifth switch electrically connected in series.

Abstract: A resonant converter converts a DC voltage into an output voltage. The resonant converter includes a transformer, a primary-side circuit, and a control module. The primary-side circuit receives the DC voltage, and includes a resonant circuit. The resonant circuit is coupled to the primary-side winding to form a resonant module. The control module is coupled to the primary-side circuit, and controls the primary-side circuit to convert the DC voltage so as to generate a winding voltage at two ends of the resonant module. When the control module detects that an output current of the resonant converter is in a current interval between a predetermined current and a rated current, the control module adjusts a duty cycle of the winding voltage with a variation.

Abstract: In one embodiment, a multi-level, bridgeless boost power factor correction (PFC) device, comprising: a circuit comprising an inductor, and at least a first pair and a second pair of switches and a capacitor arranged in a flying capacitor, totem-pole configuration; and a control circuit configured to drive the at least first and second pairs of switches in such a way as to reduce distortion in a line current, wherein for the first and second pairs of switches, the control circuit is configured to: for a first half line cycle, drive a first switch of each pair during an entire interval of the first half-line cycle and a second switch of each pair for less than the entire interval; and for a second half-line cycle, drive the first switch of each pair for less than an entire interval of the second half-line cycle and the second switch of each pair during an entire interval of the second half-line cycle.

Abstract: A processing and buffering device compatible with various conveying lines is disclosed and includes a fixing and installation mechanism, a jacking component and a clamping component. The fixing and installation mechanism is used for fixing the processing and buffering device on a lateral side of a conveying line. The jacking component is disposed on the fixing and installation mechanism, and includes a jacking cylinder and a connection element, wherein the jacking component is allowed moving up and down in a vertical direction under the action of the jacking cylinder. The clamping component is disposed on the fixing and installation mechanism, connected to the jacking component through the connection element, and includes a horizontal displacement cylinder and two clamping elements. The clamping component is driven by the jacking component to move. The clamping elements are driven by a horizontal displacement cylinder to perform a clamping operation or a releasing operation.

Abstract: A current detection method adapted to an inverter is provided, which includes: determining that a plurality of lower arms of an inverter have a minimum conduction period when all the lower arms are turned on simultaneously; determining a sampling time point according to the minimum conduction period, wherein a period from a starting point of the minimum conduction period to the sampling time point is defined as a sampling period that is close to the minimum conduction period; simultaneously detecting currents flowing through the lower arms by a plurality of detection resistors to generate a plurality of measurement voltages; and determining the currents of the inverter according to the measurement voltages.

Abstract: An energy storage system and an operating method thereof are provided. The energy storage system provides power regulation for the power grid. The energy storage system includes an energy storage unit, a measurement unit and a control unit. The measurement unit measures the operating frequency of the power grid. When the operating frequency is between the third frequency boundary value and the fourth frequency, the control unit configures the regulation ratio of the power regulation to be less than or equal to the second operating ratio and greater than or equal to the second input boundary value. The second operating ratio is less than the first operating ratio, and the efficiency of charging the energy storage unit by the power grid at the second operating ratio is greater than that at the first operating ratio by an efficiency threshold.

Abstract: A power supply equipment supplies power to a critical load and a non-critical load. The power supply equipment includes a plurality of power supplies coupled in parallel and a system controller. The system controller is coupled to the power supplies, and communicates with the power supplies to set a specific sequence. The system controller notifies the power supplies to adjust operating frequencies to be inconsistent according to the specific sequence.

Abstract: The present disclosure provides a motor drive integrated on-board charger to reduce the quantity of components in an electric system of an electric vehicle. Reduction of components is achieved by utilizing the motor and the motor driving inverter as a part of the on-board charger in the charging mode. By controlling relays, electrical connections of the system may be reconfigured according to its mode of operation. In one aspect, the motor and the motor driving inverter play the roles of a boost PFC, a current regulator, or both.

Abstract: A modular gripper is disclosed and includes a main fixing plate, a driving module, two screw rods, two extension plates, two extension screws and two nuts. The two screw rods are arranged concentrically in the first direction, connected to the driving module, and driven by the driving module to rotate. The two extension plates are detachably docked to two sides of the main fixing plate through connection elements. The two extension screws are connected to the two screw rods, respectively. Threads of the two extension screws are continuously connected with threads of the two screw rods. The two nuts are sleeved on the two screw rods, respectively. When the two screw rods and the two extension screws are driven by the driving module to rotate synchronously, the two nuts are allowed to displace relative to the two screw rods and the two extension screws, to achieve a clamping operation.

Abstract: A water pump housing structure is provided, including a first housing, a second housing, a third housing, a rotor, and a stator. The first housing has an inlet. The second housing, along with the first housing, forms a flow passage. The flow passage is in fluid communication with the inlet and serves as a passage for fluid. The third housing has an inner surface and an outer surface. The inner surface, along with the second housing, forms a stator chamber. A fin structure is formed on the inner surface. The fin structure protrudes from the inner surface toward the stator chamber. The rotor is located inside the flow passage. The stator is located inside the stator chamber and drives the rotor to rotate.

Abstract: The present disclosure relates to a power grid system and method of managing the same. According to the present invention, a power grid system is provided. The power grid system is adapted to supply electric power to at least one load unit, and the power grid system comprises a bus, a switching module, and an energy storage system coupled to the bus. The at least one load unit is coupled to the bus. The switching module comprises a switching device. The switching device is connected between the bus and a main grid. The energy storage system is configured to operate in a current source mode and a voltage source mode, and it is configured to receive a tripped signal from the switching module. The energy storage system is configured to switch to the voltage source mode when the energy storage system receives the tripped signal.

Abstract: A connector is disclosed and includes a main body, a circuit board and a signal connection socket. The main body includes an input side, an output side, power inputs, signal inputs, power outputs and signal outputs. The input side is opposite to the output side, the power inputs and the signal inputs are arranged on the input side respectively, the power outputs are arranged on the output side, the power outputs are electrically connected to the power inputs, and the signal outputs are disposed on a bottom side and electrically connected to the signal inputs. The bottom side is connected between the input side and the output side. The circuit board includes an upper surface, and the bottom side is attached to the upper surface. The signal connection socket is disposed on the upper surface and electrically connected to the signal outputs through the circuit board.

Abstract: A charging circuitry includes a power electronic converter, a current sensor, a voltage boost/buck controller and a charging mode controller. The power electronic converter is configured to charge or discharge a supercapacitor according to a control command. The current sensor is coupled to the supercapacitor for detecting a first sensed voltage and a second sensed voltage. The voltage boost/buck controller is configured to generate the control command and a current command according to the first and second sensed voltages and an overall feedback. The charging mode controller is configured to generate a current feedback and a voltage feedback to the voltage boost/buck controller according to a driving voltage, the current command and a third sensed voltage of the supercapacitor. The third sensed voltage, the current feedback and the voltage feedback are superposed as the overall feedback and then inputted to the same input terminal of the voltage boost/buck converter.

Abstract: An auxiliary power circuit of a conversion module is used to supply power to a control unit, and an input end of the conversion module includes an even number of energy storage units coupled in series. The auxiliary power circuit includes an even number of primary-side circuits and a secondary-side circuit. Each primary-side circuit includes a first switch unit, a second switch unit, and a resonance tank. The first switch unit is connected to the second switch unit in series, and is correspondingly connected to one of the energy storage units in parallel. The resonance tank is connected to the second switch unit in parallel. The secondary-side circuit is coupled to the resonance tanks of two of the primary-side circuits to acquire power and supply power to the control unit.

Abstract: A power module comprises a first circuit board assembly and a magnetic core assembly. The first circuit board assembly comprises a first printed circuit board and at least two switch circuits disposed on the first printed circuit board. The magnetic core assembly is disposed near the first printed circuit board and comprises a magnetic core portion and at least a pair of first electrical conductors. The magnetic core portion comprises at least a core unit, the core unit comprises a pair of holes and a second magnetic overlapping region, and the pair of holes are separated by the second magnetic overlapping region. Each pair of the first electrical conductors is penetrated through the corresponding pair of holes of the magnetic core portion to define two output inductors. Each of the switch circuits is electrically connected with the corresponding output inductor to define a phase circuit of the power module.

Abstract: A medium-voltage (MV) power conversion system receives a MV AC power source, and converts the MV AC power source into DC power sources to supply power to loads. The MV power conversion system includes a plurality of power modules, and each power module includes a MV AC switch and a MV isolated AC-to-DC converter. The MV isolated AC-to-DC converter is connected in series to the MV AC switch. Input sides of the plurality of MV AC switches are connected to each other, and connected of the MV AC power source so that the plurality of MV isolated AC-to-DC converters individually convert the MV AC power source into the DC power sources.