Eaton Intelligent Power Limited

Santak Electronic (shenzhen) Co., Ltd.

Lian Zheng Electronics (shenzhen) Co., Ltd.

Zhongyong Xu

David Zheng

Yusong Ding

Kai Liu

Zhiwu Wang

Xizheng Liao

Zhiwei Liao

The present invention provides a power factor correction (PFC) and DC-DC multiplexing converter and an uninterruptible power supply including the same. The multiplexing converter includes a multiplexing bridge arm and a battery hookup bridge arm. During power supply of a battery, the converter controls one electrode of a positive electrode and a negative electrode of the battery to be alternately connected to a neutral point and one of positive and negative direct current buses that has the same polarity as the electrode, to enable a level of the electrode of the battery to synchronously and alternately rise or drop with the alternate supply of power to the positive and negative direct current buses; or controls one electrode of a positive electrode and a negative electrode of the battery to be constantly connected to the neutral point. A current converter of the present invention has less battery charge-discharge potential jumps, higher level of integration, lower costs, and better electromagnetic compatibility characteristics, and is more applicable to a single-battery uninterruptible power supply system.

Power factor correction and DC-DC multiplexing converter and uninterruptible power supply including the same

A UPS circuit, comprising a rectification phase leg (PL) for rectification, which is used for converting a received alternating current into a direct current; inversion phase legs (PL, PL, PL) for inversion, which are used for inverting the direct current output by the rectification phase leg into an alternating current; a failure detection device (D) which is used for detecting whether an inversion phase leg has failed; a redundant inversion phase leg (PL), with an input end thereof being connected to an output end of the rectification phase leg; and a control device which is used for receiving a signal sent by the failure detection device and is also used for enabling the redundant inversion phase leg to replace the inversion phase leg which has failed when a failure occurs.

UPS circuit

The present invention provides a bidirectional DC-DC converter. The bidirectional DC-DC converter includes a first switching tube connected in antiparallel to a first diode; a second switching tube connected in antiparallel to a second diode; a third switching tube connected in antiparallel to a third diode; a fourth switching tube connected in antiparallel to a fourth diode; and a first inductor and a second inductor, where an anode of the first diode and a cathode of the second diode are connected to form a first node, an anode of the second diode and a cathode of the third diode are connected to a neutral point, an anode of the third diode and a cathode of the fourth diode are connected to form a second node, and one end of the first inductor and one end of the second inductor are respectively connected to the first node and the second node. The bidirectional DC-DC converter in the present invention has high conversion efficiency.

Bidirectional DC-DC converter

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Shenzhen, China

Zhongyong Xu