Title:
OUTPUT CONTROL METHOD FOR T-TYPE THREE-LEVEL VOLTAGE TYPE INVERTER AND RELATED DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/262066
Kind Code:
A1
Abstract:
An output control method and apparatus for a T-type three-level voltage type inverter, electronic device, and a computer readable storage medium. The method comprises: determining an inverter output voltage and a neutral point clamping current under each switch combination state for different switch combination states of a switch tube in the inverter; calculating a load voltage predicted value on the basis of the inverter output voltage; calculating a voltage deviation between direct current voltage divider capacitors in the inverter on the basis of the neutral point clamping current; calculating the value of a cost function on the basis of an error between a load voltage given value and the load voltage predicted value and the voltage deviation, the cost function being positively correlated with the error and the voltage deviation, respectively; and determining a switch combination state, in which the value of the cost function is minimized, as a current target state, such that the switch tube in the inverter is regulated according to the target state. According to the present application, stability, dynamic performance and a dynamic tracking capability of an output voltage of an inverter system are effectively improved, and control quality for the output voltage is improved.
Inventors:
YANG YONG (CN)
CHEN SHENGWEI (CN)
FAN MINGDI (CN)
HE LIQUN (CN)
XIAO YANG (CN)
DU GUIFU (CN)
CHEN RONG (CN)
XIE MENXI (CN)
CHEN SHENGWEI (CN)
FAN MINGDI (CN)
HE LIQUN (CN)
XIAO YANG (CN)
DU GUIFU (CN)
CHEN RONG (CN)
XIE MENXI (CN)
Application Number:
PCT/CN2021/107612
Publication Date:
December 22, 2022
Filing Date:
July 21, 2021
Export Citation:
Assignee:
UNIV SOOCHOW (CN)
International Classes:
H02M7/487; H02M1/12; H02M7/5387
Foreign References:
| CN112260564A | 2021-01-22 | |||
| CN106911147A | 2017-06-30 | |||
| CN103326598A | 2013-09-25 | |||
| US20140050000A1 | 2014-02-20 |
Other References:
YANG, YONG ET AL: "Finite Switching State Model Predictive Control for T-type Three-level Single-phase Inverters", ELECTRIC MACHINES AND CONTROL, vol. 23, no. 3, 31 March 2019 (2019-03-31), pages 120 - 126, XP093015297, ISSN: 1007-449X
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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