CAJ | 학술논문

提出一种基于电流观测器的三相变流器重复控制方法，采用简单的电流观测器模型，通过对每个控制周期中输出电流增量的状态反馈，可有效消除数字延时的影响，并自动补偿由于电压预测偏差、死区时间和模型参数偏差等造成的波形畸变和相位偏移，真正实现在每个控制周期的结束时刻使实际电流跟踪到其给定值，在计算量增加不大的条件下，保持传统无差拍控制快速响应的特点，并对数字延时以及模型参数具有很好的鲁棒性。
제출일충기우전류관측기적삼상변류기중복공제방법，채용간단적전류관측기모형，통과대매개공제주기중수출전류증량적상태반궤，가유효소제수자연시적영향，병자동보상유우전압예측편차、사구시간화모형삼수편차등조성적파형기변화상위편이，진정실현재매개공제주기적결속시각사실제전류근종도기급정치，재계산량증가불대적조건하，보지전통무차박공제쾌속향응적특점，병대수자연시이급모형삼수구유흔호적로봉성。
A repetitive control method with a simple current observer was proposed, which can compensate the time delay impact of digital control as well as the output current error caused by predictive error of main voltage, dead-time effect and deviation of model parameters. Deadbeat control is realized by forcing the output current exactly arrive at its reference at the end of each sample period. This method preserves the rapid response of deadbeat control without increasing much computation and is robust against digital time delay and is not sensitive to deviation of model parameters.