Power conversion system and method of operating the same

Patent metadata

Field	Value
Publication number	US-9306474-B2
Application number	US-201414448210-A
Country	US
Kind code	B2
Filing date	Jul 31, 2014
Priority date	Jan 29, 2014
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

A power conversion system mainly includes an input capacitor bank, a first conversion circuit, a second conversion circuit, and a control circuit. The input capacitor bank has a first capacitor and a second capacitor. The first capacitor and the second capacitor are connected to a neutral point and receive a DC input voltage. The first conversion circuit is connected in parallel to the input capacitor bank, and has a first branch, a second branch, and a first auxiliary branch. The second conversion circuit is connected in parallel to the input capacitor bank, and has a third branch, a fourth branch, and a second auxiliary branch. The control circuit produces a plurality of control signals to correspondingly control the first conversion circuit and the second conversion circuit so as to reduce leakage current caused by parasitic capacitance voltage.

First claim

What is claimed is:

1. A power conversion system configured to convert a DC input voltage into an AC output voltage; the power conversion system comprising:
an input capacitor bank having a first capacitor and a second capacitor, and the first capacitor and the second capacitor connected to a neutral point and configured to receive the DC input voltage;
a first conversion circuit connected in parallel to the input capacitor bank;
a second conversion circuit connected in parall…

Assignees

• Delta Electronics Inc

Inventors

• Chen Hong-Yi
• Ku Chen-Wei
• Hsin Wei-Lun

Classifications

• H02M7/53871

  Electricity · mapped topic

• H02M7/53873 Primary

  Electricity · mapped topic

• H02M1/15 Primary

  Electricity · mapped topic

• H02M7/5388

  Electricity · mapped topic

• H02M1/126

  Electricity · mapped topic