Title:
COMMON MODE VOLTAGE REGULATION METHOD AND APPARATUS, CONTROL SYSTEM
Document Type and Number:
WIPO Patent Application WO/2022/179450
Kind Code:
A1
Abstract:
The present application relates to the technical filed of electronics, and discloses a common mode voltage regulation method and apparatus, and a control system. A controller can generate an injection instruction of a first common mode voltage according to a first modulation approach, and generate an injection instruction of a second common mode voltage according to a second modulation approach. During a time period when the modulation approach is switched, the controller can generate an injection instruction of a third common mode voltage according to the injection instruction of the first common mode voltage and the injection instruction of the second common mode voltage. The injection instruction of the third common mode voltage can be used to control a voltage inverter circuit to output the third common mode voltage. At any time within the time period when the modulation approach is switched, the third common mode voltage is between the first common mode voltage and the second common mode voltage. The third common mode voltage is converted from the first common mode voltage to the second common mode voltage, or the third common mode voltage is converted from the second common mode voltage to the first common mode voltage. By means of this method, when the modulation approach is switched, damage to a voltage inverter circuit device can be reduced, and the service cycle of the device can further be prolonged.
More Like This:
Inventors:
YU XINYU (CN)
XIN KAI (CN)
GUO HAIBIN (CN)
XU FUQIANG (CN)
XIN KAI (CN)
GUO HAIBIN (CN)
XU FUQIANG (CN)
Application Number:
PCT/CN2022/076918
Publication Date:
September 01, 2022
Filing Date:
February 18, 2022
Export Citation:
Assignee:
HUAWEI DIGITAL POWER TECH CO LTD (CN)
International Classes:
H02M7/483; H02J3/38; H02M7/487
Foreign References:
| CN111900891A | 2020-11-06 | |||
| CN108336920A | 2018-07-27 | |||
| CN110601638A | 2019-12-20 | |||
| US5852558A | 1998-12-22 |
Other References:
WEIWEI LI ET AL.: "Implementation of Five-Level DPWM on Parallel Three-Level Inverters to Reduce Common-Mode Voltage and AC Current Ripples", IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS, vol. 56, no. 4, 31 August 2020 (2020-08-31), XP011799191, ISSN: 0093-9994, DOI: 10.1109/TIA.2020.2991020
Attorney, Agent or Firm:
TDIP & PARTNERS (CN)
Download PDF: