CAJ | 학술논문

对Boost型脉宽调制(PWM)整流器的并联环流产生机理进行了详细分析。通过在αβ0坐标系下建模，将环流划分为共模环流、差模环流、高频环流3类，揭示了各类环流的影响因素。在此基础上，基于比例谐振调节器，针对差模环流和共模环流分别设计了独立控制器。由于αβ0坐标系不需要电网相位信息，因此该控制策略能够省略锁相环节，简化计算量和控制结构。在600 kVA对拖平台上进行了实验，验证了机理分析的正确性与控制策略的有效性。
대Boost형맥관조제(PWM)정류기적병련배유산생궤리진행료상세분석。통과재αβ0좌표계하건모，장배류화분위공모배류、차모배류、고빈배류3류，게시료각류배류적영향인소。재차기출상，기우비례해진조절기，침대차모배류화공모배류분별설계료독립공제기。유우αβ0좌표계불수요전망상위신식，인차해공제책략능구성략쇄상배절，간화계산량화공제결구。재600 kVA대타평태상진행료실험，험증료궤리분석적정학성여공제책략적유효성。
The generating mechanism of circulating currents in parallel three-phase Boost rectifiers is analyzed.A model of the circulating current inαβ0 stationary coordinate system is established.Base on this,the circulating current is classified into three components:common-mode circulating current,differential-mode circulating current and high frequency circulating current. The affecting factors of three components are also revealed.With these understanding,controllers based on proportional and resonant regulators are designed separately for common-mode and differential-mode circulating current. Since rotating transformation and phase detection are eliminated inαβ0 coordinate system,a simple structure and small computational cost are achieved.Experiments are carried out on a 600 kVA mutual-driving test-bed.The results prove the validity of the analysis and the proposed control strategy.