Current Sharing Control Method for Parallel Three-Level Inverters Based on PSST Strategy

EasyChair Preprint no. 8859

Abstract

Communication equipment is often utilized in conventional parallel inverters current sharing, which will result in limited equipment arrangement and communication line freedom. In this paper, current sharing control method for parallel three-level inverters based on power/signal synchronous transfer (PSST) strategy is proposed. A mathematical model based on SVPWM control method is established for NPC type parallel three-level inverters, and the stability of the system is analyzed. On this basis, the PSST technique is introduced to convert the output current of the master inverter into a rectangular carrier signal carrying information, which is then transmitted to the slave inverter as its output current reference, realizing the parallel inverter current sharing. Finally, simulation results verify the feasibility and effectiveness of the control method.

Keyphrases: Master-slave control；, Parallel inverter current sharing；, Power/signal synchronous transfer；

@Booklet{EasyChair:8859,
  author = {Mingxue Li and Kai Wang and Dongsheng Yu},
  title = {Current Sharing Control Method for Parallel Three-Level Inverters Based on PSST Strategy},
  howpublished = {EasyChair Preprint no. 8859},

  year = {EasyChair, 2022}}