Abstract: A DC/DC converter includes: a first capacitor and a second capacitor coupled to a first node; a five-port network coupled to the first to fifth nodes; a transformer electrically connected to the fourth and fifth nodes; and a secondary side circuit electrically connected to a secondary winding of the transformer and coupled to a load; the control method includes: controlling, when the load is less than a preset value, switching states of multiple switches in the secondary side circuit, causing the transformer to be short-circuited for at least a first time period during a phase of stopping energy transmission; and controlling switching states of multiple switches in the five-port network during the first time period, causing current to flow from the five-port network to the first node or flow from the first node to the five-port network.

Abstract: A universal power input assembly includes an input power terminal, a first circuit board and a second circuit board. The input power terminal is electrically coupled to the first circuit board and the first circuit board includes a connector, wherein a first end of the connector is electrically coupled to the first circuit board and a second end of the connector is electrically coupled to the second circuit board.

Abstract: The present disclosure provides a power supply module. The power supply module is applied to an integrated circuit chip assembly which includes a first carrier board and an integrated circuit chip located at a first side of the first carrier board; the power supply module includes: a second carrier board; a first-stage power supply unit; and a second-stage power supply unit, power input terminals of the second-stage power supply unit are electrically connected with corresponding power output terminals of the first-stage power supply unit through the second carrier board; power output terminals of the second-stage power supply unit are electrically connected with corresponding power terminals of the integrated circuit chip, a projection of the second-stage power supply unit on a first plane is at least partially located within a projection range of the integrated circuit chip on the first plane, the first plane is parallel to the first carrier board.

Abstract: There is disclosed a magnetic component which includes a first magnetic pole extending in a first direction and having an air gap provided therein, a second magnetic pole extending in the first direction, a cover plate extending in a second direction perpendicular to the first direction and connected with an end of the first magnetic pole and an end of the second magnetic pole, a protrusion formed on and at least partially surrounding the first magnetic pole, and a winding wound around the first magnetic pole at the air gap and having a lead supported by the protrusions such that a clearance is formed between the winding and the first magnetic pole.

Abstract: The present disclosure provides a power module assembly and a converter. The power module assembly includes a power module and a capacitor module, and the power module and the capacitor module are configured to be detachably connected; the power module includes a first bus bar, and the first bus bar includes a first connection portion and a power installation portion connected to the first connection portion; the capacitor module includes a second bus bar, and the second bus bar includes a second connection portion and a capacitor installation portion connected to the second connection portion, wherein the first connection portion and the second connection portion extend along a first direction, and the power installation portion and the capacitor installation portion extend along a second direction; the first connection portion and the second connection portion are connected by a fastener.

Abstract: An inverter box structure includes an inverter accommodating box of an inverter circuit and a junction box. A first quick connector, disposed on the inverter accommodating box, includes a first connection end and a second connection end. The first connection end of the first quick connector is electrically with the inverter circuit. A second quick connector, disposed on the junction box or in the junction box, includes a third connection end and a fourth connection end. The third connection end of the second quick connector is connected to an inner wire of the junction box. A casing of the inverter accommodating box equipped with the first quick connector is opposite to a casing of the junction box equipped with the second quick connector, and the second connection end of the first quick connector matches with and is electrically connected to the fourth connection end of the second quick connector.

Abstract: A transformer includes a magnetic core, a first winding and at least one second winding. The magnetic core has a window through which the first winding passes through without contacting the magnetic core. The second winding passes through the window of the magnetic core and is wound on the magnetic core. The second winding has a distance from the first winding, and a semi-conductive part is disposed between the second winding and the magnetic core. The present disclosure can effectively lower the risk of partial discharge between the second winding and the magnetic core, and thus the transformer of the present disclosure has high reliability.

Abstract: A passive, current dependent inductivity (1) comprises a magnetic core (2), windings (3) and at least one bank air gap (4). A saturation region (5) made of magnetic material is arranged between the bank air gap (4) and the windings (3). A magnetic flux path (6) bifurcates into a first path (61) passing through the saturation region (5) and into a second path (62) passing through the bank air gap (4) and bypassing the saturation region (5). The magnetic resistance of the first path (61) is lower than the magnetic resistance of the second path (62) for winding currents below a first saturation current (7a) and whereby the magnetic resistance of the second path (62) is lower than the magnetic resistance of the first path (61) for winding currents above the first saturation current (7a) due to saturation of the saturation region.

Abstract: A power integrated module, including at least one first bridge formed in a chip, wherein the first bridge includes: a first upper bridge switch, formed by a plurality of first sub switches formed in the chip connected in parallel, and including a first, a second and a control end; a first lower bridge switch, formed by a plurality of second sub switches formed in the chip connected in parallel, and including a first, a second and a control end; a first electrode, connected to the first end of the first upper bridge switch; a second electrode, connected to the second end of the first lower bridge switch; and a third electrode, connected to the second end of the first upper bridge switch and the first end of the first lower bridge switch, wherein the first, the second and the third electrode are bar-type electrodes arranged side by side.

Abstract: A detection method with a compensation function includes the following steps. After a sample is added to a first cassette, a first triggering instruction is provided to define a first time point. The start position of the reaction area of the first cassette is detected, and a second time point is defined when a first light detecting signal greater than or equal to a predetermined value is obtained. After a predetermined time, a second light detecting signal is obtained from a color band of the reaction area. The time difference between the first time point and the second time point is calculated and the time difference is designated as a first retention time. A compensation value is obtained in a lookup table according to the first retention time and the second detecting signal and the second detecting signal is compensated by the compensation value.

Abstract: The present disclosure discloses a method and system for reducing a circulating current between a plurality of non-isolated modules operating in parallel. The input terminals and the output terminals of the plurality of non-isolated modules are respectively connected in parallel, and each of the non-isolated modules comprises a first stage converter, a bus capacitor and a second stage converter, which are electrically connected in sequence. For each of the non-isolated modules, the method comprises: comparing a first signal reflecting the input power of the non-isolated module with a reference value to obtain a comparison result; and adjusting the voltage of the bus capacitor according to the comparison result, wherein the voltage of the bus capacitor is decreased when the first signal is greater than the reference value, and the voltage of the bus capacitor is increased when the first signal is less than the reference value.

Abstract: The present disclosure provides an optimizer for a photovoltaic system, a control method for an optimizer, and an optimizer parallel arrangement thereof. In the method, a DC bus voltage output by the optimizer is acquired; and the optimizer is controlled to switch among an MPPT mode, a limited power mode and a fast shutdown mode based on the DC bus voltage.

Abstract: The present disclosure relates to the field of power electronics, and proposes a power conversion system, including a power cabinet, a first divider and a plurality of power modules. The power cabinet includes a first high voltage compartment and a first low voltage compartment. The first divider is arranged in the power cabinet, and extends along a height direction of the power cabinet to separate the first high voltage compartment and the first low voltage compartment. The plurality of power modules are arranged in the power cabinet, each power module includes a high voltage input terminal and a low voltage output terminal; the high voltage input terminal is arranged in the first high voltage compartment, and the low voltage output terminal is arranged in the first low voltage compartment.

Abstract: The present disclosure relates to the field of power electronics technology, and proposes a power module, including: a case and an isolating part disposed in the case; a first air duct and a second air duct stacked to each other, separated by the isolating part, and penetrated in a front-to-rear direction in the case; a high-voltage power unit; a low-voltage power unit; and a transformer, including a high-voltage portion and a low-voltage portion, wherein the high-voltage portion includes a first magnetic core and a high-voltage coil disposed on the first magnetic core, and the low-voltage portion includes a second magnetic core and a low-voltage coil disposed on the second magnetic core, wherein the high-voltage power unit and the high-voltage portion are disposed in the first air duct, and the low-voltage power unit and the low-voltage portion are disposed in the second air duct.

Abstract: The present disclosure provides a DC power supply system, comprising: a first power supply circuit and a second power supply circuit, each power supply circuit comprises a phase-shifting transformer and an AC-DC conversion circuit; and a bidirectional electronic switch electrically coupled between the output end of the first power supply circuit and the output end of the second power supply circuit, wherein the bidirectional electronic switch is configured to transmit power between the output end of the first power supply circuit and the output end of the second power supply circuit depend on the voltage difference of the two output voltages.

Abstract: A transformer includes an insulation member, a high voltage part, and a low voltage part, the insulation member includes a first insulator, a second insulator, and a reference plane, the high voltage part is disposed on a first side of the reference plane, the low voltage part is disposed on a second side of the reference plane, the first insulator is disposed on the reference plane, at least a portion of the second insulator is located around the high voltage part, at least one air passage is formed by the insulation member, and at least a portion of the air passage is located within a height of the high voltage part in a normal direction of the reference plane.

Abstract: The present disclosure provides a DC power supply system and its control method. The system includes: a first power supply circuit and a second power supply circuit, at least one of the first power supply circuit and the second power supply circuit including a phase shifting transformer, wherein the first power supply circuit includes a number N of first AC/DC conversion circuits, and the second power supply circuit includes a number N of second AC/DC conversion circuits, where N is an integer greater than or equal to 2; an output side of each of the N first AC/DC conversion circuits is electrically connected in parallel with an output side of a corresponding second AC/DC conversion circuit of the N second AC/DC conversion circuits through a DC busbar to form N sets of redundant backup circuits.

Abstract: The present disclosure provides a connector protection method in which the connector is used to connect a first device and a second device, and the method includes, a first detection unit of the first device detects a first parameter of the first device; a first controller of the first device obtains a second parameter from the second device through the communication line in the connector; and the first controller determines whether the connector is faulty based on the first parameter and the second parameter.

Abstract: A control method, which is applied to a conversion circuit including at least one bridge arm and an inductor, the bridge arm including an upper semiconductor switch and a lower semiconductor switch connected in series, and one end of the inductor being connected to a midpoint of the bridge arm, includes: detecting a direction of current of the inductor when a scram event occurs in the conversion circuit; turning on the upper semiconductor switch and turning off the lower semiconductor switch when the direction of current of the inductor is a first direction, wherein the first direction is the direction when the current flows from one end of the inductor to the midpoint of the bridge arm; and turning off the upper semiconductor switch and turning on the lower semiconductor switch when the direction of current of the inductor is a second direction.

Abstract: An uninterruptible power supply with DC output includes an AC-to-DC conversion circuit coupled to an AC power source for outputting a first DC power source, a charging and discharging module for outputting a second DC power source, at least one power module coupled to the AC-to-DC conversion circuit and the charging and discharging module, a user operation interface disposed between the at least one power module and at least one load, and the user operation interface includes at least one operation unit, the power required for each load is selected by each operation unit so that at least one power module uninterruptedly supplies power to each load.