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Patent Searching and Data


Title:
POWER FACTOR CORRECTION CIRCUIT CONTROL METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/128033
Kind Code:
A1
Abstract:
Disclosed in the present invention are a control method and device for a power factor correction circuit. The method comprises: obtaining voltage information of the power factor correction circuit; determining whether the voltage information meets a set switching condition; if the set switching condition is met, switching a control mode of the power factor correction circuit to a continuous conduction mode; and if the set switching condition is not met, switching the control mode of the power factor correction circuit to a triangular wave current mode or a critical conduction mode. Compared with the prior art, the control mode of the power factor correction circuit can be different according to the voltage information in the embodiment of the present invention, instead of remaining unchanged at all times, without increasing the withstand voltage level of the bus capacitor, thereby reducing the cost of implementation. Moreover, it is not necessary to forcibly change a given value of the current peak, thereby improving the total harmonic distortion of the input current. (FIG. 1)

Inventors:
XIANG BO (CN)
LI JIAN (CN)
YANG RUIGUO (CN)
Application Number:
CN2018/086120
Publication Date:
July 04, 2019
Filing Date:
May 09, 2018
Export Citation:
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Assignee:
VERTIV ENERGY SYSTEMS INC (US)
International Classes:
H02M1/42
Foreign References:
CN107196499A2017-09-22
CN106385170A2017-02-08
CN105391295A2016-03-09
CN101860194A2010-10-13
US9325236B12016-04-26
Other References:
See also references of EP 3734821A4
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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