电力系统自动化2017，Vol.41Issue(11)：156-162,7.
基于IGBT器件串联的MMC随机零序分量注入PWM方法
Random Zero-sequence Component Modulation of MMC Based on IGBT Series Modular
摘要
Abstract
With the development of modular multilevel converter (MMC), improving the capacity and voltage level has become a research hotspot.In this paper, by establishing the MMC model based on insulated gate bipolar transistor (IGBT) series modular, the voltage harmonic distortion with carrier phase shift modulation strategy is studied along with the electromagnetic noise interference at switching frequency.The random zero-sequence component modulation (RZCM) mode is proposed and, based on the principle of random process, the power spectral densities in different random pulse width modulation (PWM) modes are compared.Then, the noise reduction of random PWM for MMC is treated based on theory and simulation.Simulation results show that the proposed method can appreciably reduce the noise of MMC with large capacity and high voltage.关键词
模块化多电平换流器/脉宽调制(PWM)/随机零序电压注入调制/降噪Key words
modular multilevel converter(MMC)/pulse width modulation(PWM)/random zero-sequence component modulation(RZCM)/noise reduction引用本文复制引用
刘蓁,魏应冬,姜齐荣..基于IGBT器件串联的MMC随机零序分量注入PWM方法[J].电力系统自动化,2017,41(11):156-162,7.基金项目
国家电网公司科技项目(SGRI-DL-71-14-001).This work is supported by State Grid Corporation of China (No.SGRI-DL-71-14-001). （SGRI-DL-71-14-001）
