The present disclosure relates to a power converter for use in a host vehicle. The power converter comprises a DC link, a DC link capacitor, and a pre-charge circuit configured to charge the DC link capacitor. The pre-charge circuit comprises a boost converter comprising a switch and inductor coupling terminals configured to couple to an inductive component external to the power converter.

A three-phase regenerative drive configured for operation from a single phase alternating current (AC) power source, the three-phase regenerative drive including a three-phase converter having inputs for connection to a single-phase AC source, the three-phase converter having three phase legs, a three-phase inverter for connection to a motor, the three phase inverter configured to provide three phase command signals to the motor, and a DC bus connected between the three-phase converter and the three-phase inverter. A first phase leg of the three-phase converter and a second phase leg of the three-phase converter are employed to direct current from the single-phase AC source to the DC Bus and a third phase leg of the three phase legs of the three-phase converter returns current to a return of the AC source.

A three-phase regenerative drive configured for operation from a single phase alternating current (AC) power source, the three-phase regenerative drive including a three-phase converter having inputs for connection to a single-phase AC source, the three-phase converter having three phase legs, a three-phase inverter for connection to a motor, the three phase inverter configured to provide three phase command signals to the motor, and a DC bus connected between the three-phase converter and the three-phase inverter. A first phase leg of the three-phase converter and a second phase leg of the three-phase converter are employed to direct current from the single-phase AC source to the DC Bus and a third phase leg of the three phase legs of the three-phase converter returns current to a return of the AC source.

A power system (1), typically for use in a data centre, which eliminates use of a changeover device when switching between power sources. The power system (1) includes first and second rectifiers (5, 6), each of which is connected to a respective AC power source (2, 3), and an energy storage device (1).

A power system (1), typically for use in a data centre, which eliminates use of a changeover device when switching between power sources. The power system (1) includes first and second rectifiers (5, 6), each of which is connected to a respective AC power source (2, 3), and an energy storage device (1).

This system for converting the electrical energy delivered by a supply network comprises of: a converter and at least one zero-sequence current limiting stage flowing in the converter. The or each limiting stage comprises an active compensation circuit comprising a magnetic component and a voltage source connected to the magnetic component, the voltage source and the magnetic component being adapted to serially inject with the converter an active compensation voltage of the zero-sequence voltages generated by the converter.

The present invention provides an uninterruptible power supply with bypass power sharing function, including: an input end, configured to be connected to mains; an output end, configured to be connected to a load; a current sensor, disposed at the output end and configured to sense an output current of the uninterruptible power supply; a bypass branch, disposed between the input end and the output end; and an inverter branch, including a rectifier, an inverter and an energy storage battery, wherein one end of the rectifier is connected to the input end, and the other end is connected to one end of the inverter; the other end of the inverter is connected to the output end; and the energy storage battery is connected to a node between the rectifier and the inverter, wherein the uninterruptible power supply is set to be capable of working in a mains mode; and in the mains mode, the inverter branch is controlled with a current loop, so that the bypass branch and the inverter branch together provide the output current of the uninterruptible power supply.

The present invention provides an uninterruptible power supply with bypass power sharing function, including: an input end, configured to be connected to mains; an output end, configured to be connected to a load; a current sensor, disposed at the output end and configured to sense an output current of the uninterruptible power supply; a bypass branch, disposed between the input end and the output end; and an inverter branch, including a rectifier, an inverter and an energy storage battery, wherein one end of the rectifier is connected to the input end, and the other end is connected to one end of the inverter; the other end of the inverter is connected to the output end; and the energy storage battery is connected to a node between the rectifier and the inverter, wherein the uninterruptible power supply is set to be capable of working in a mains mode; and in the mains mode, the inverter branch is controlled with a current loop, so that the bypass branch and the inverter branch together provide the output current of the uninterruptible power supply.

Systems and methods for regulating a short circuit current associated with an energy storage system are provided. In one embodiment, an energy storage system can include an energy storage device and a switching power supply coupled to the energy storage device. The energy storage system can further include one or more cables configured to couple the energy storage device to the switching power supply, and a magnetic framework positioned proximate the one or more cables. The magnetic framework can include one or more magnetic structures and can span at least a portion of the length of the cables. The one or more cables are positioned in a physical arrangement that, in conjunction with the magnetic framework, facilitates a selected inductance between the cables.

Systems and methods for regulating a short circuit current associated with an energy storage system are provided. In one embodiment, an energy storage system can include an energy storage device and a switching power supply coupled to the energy storage device. The energy storage system can further include one or more cables configured to couple the energy storage device to the switching power supply, and a magnetic framework positioned proximate the one or more cables. The magnetic framework can include one or more magnetic structures and can span at least a portion of the length of the cables. The one or more cables are positioned in a physical arrangement that, in conjunction with the magnetic framework, facilitates a selected inductance between the cables.