Title:
POWER FACTOR CORRECTION CIRCUIT AND INDUSTRIAL ROBOT
Document Type and Number:
WIPO Patent Application WO/2021/097746
Kind Code:
A1
Abstract:
Embodiments of present disclosure relates to a power factor correction circuit and an industrial robot. The power factor correction circuit comprises first and second AC terminals; first and second DC terminals; a first input inductor connected to the first AC terminal; a second input inductor connected to the second AC terminal; a first coupling inductor comprising a first plurality of windings, each of the first plurality of windings comprising a first end connected to the first input inductor and a second end; a second coupling inductor comprising a second plurality of windings of the same number as the first plurality of windings, each of the second plurality of windings comprising a first end connected to the second input inductor and a second end; a power converting unit comprising a plurality of branches connected in parallel between the first and second DC terminals, each of the branches comprising high-side and low-side controllable semiconductor devices wherein the second end of each of the first and second plurality of windings is connected to a middle point between the respective high-side and low-side controllable semiconductor devices; and a switching circuit arranged between the first and second AC terminals and the second DC terminal and configured to suppress a leakage current of the power factor correction circuit.
Inventors:
ZONG SHENG (CN)
FAN GUOXING (CN)
LIANG MEI (CN)
FAN GUOXING (CN)
LIANG MEI (CN)
Application Number:
PCT/CN2019/119881
Publication Date:
May 27, 2021
Filing Date:
November 21, 2019
Export Citation:
Assignee:
ABB SCHWEIZ AG (CH)
ZONG SHENG (CN)
FAN GUOXING (CN)
LIANG MEI (CN)
ZONG SHENG (CN)
FAN GUOXING (CN)
LIANG MEI (CN)
International Classes:
H02M7/797; H02M1/42
Foreign References:
| US20160079888A1 | 2016-03-17 | |||
| CN110112903A | 2019-08-09 | |||
| CN106849692A | 2017-06-13 | |||
| TWI488421B | 2015-06-11 | |||
| TWI508424B | 2015-11-11 | |||
| CN107276387A | 2017-10-20 | |||
| US20170294833A1 | 2017-10-12 | |||
| US20110149622A1 | 2011-06-23 |
Attorney, Agent or Firm:
KING & WOOD MALLESONS (CN)
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