CAJ | 학술논문

结合满意控制和模型预测控制两者的优点，提出一种三电平脉宽调制(pulse width modulation，PWM)整流器的满意预测复合控制方案，实现了低开关频率下PWM整流器的高效运行，进而降低开关损耗、抑制电磁干扰。给出三电平PWM整流器的离散数学模型，分析其模型预测控制的实现方法，着重探讨满意预测控制器的设计，并给出PWM整流器隶属度的模糊判决方案。针对三电平拓扑存在的高 du/dt冲击问题，给出其对应优化开关序列，消除du/dt冲击的同时，降低了系统计算耗时。仿真和实验结果表明，系统在低开关频率下运行时能有效抑制输入电流畸变，保证较高的功率因数，并保持良好的动稳态性能。
결합만의공제화모형예측공제량자적우점，제출일충삼전평맥관조제(pulse width modulation，PWM)정류기적만의예측복합공제방안，실현료저개관빈솔하PWM정류기적고효운행，진이강저개관손모、억제전자간우。급출삼전평PWM정류기적리산수학모형，분석기모형예측공제적실현방법，착중탐토만의예측공제기적설계，병급출PWM정류기대속도적모호판결방안。침대삼전평탁복존재적고 du/dt충격문제，급출기대응우화개관서렬，소제du/dt충격적동시，강저료계통계산모시。방진화실험결과표명，계통재저개관빈솔하운행시능유효억제수입전류기변，보증교고적공솔인수，병보지량호적동은태성능。
A novel compound control scheme for three-level PWM rectifiers with satisfactory predictive control was presented, which integrated the advantages of satisfactory control and model predictive control. It made PWM rectifiers work in low switching frequency with high efficiency, therefore reduced the switching losses and retained electromagnetic interference. A discrete mathematical model of three-level PWM rectifiers which adopted a model predictive control strategy was deducted;A satisfactory model predictive controller was designed; A PWM rectifier membership fuzzy decision scheme was presented. In order to overcome the high du/dt impact problem of the three-level topology, an optimized switching sequence was propounded. It not only eliminates the high du/dt impaction, but also reduces the computation time of the system. Simulation and experiment results show that when the system works in low switching frequency, the input current distortion can be efficiently inhibited and the power factor of the system is near to unity. Such a system can also provide good dynamic and static performances.