CAJ | 학술논문

有源电力滤波器(APF)多基于三相六开关拓扑，为提高其运行可靠性，提出一种基于元件冗余的三相四开关容错型APF。针对三相六开关 APF 的故障判别，应用功率器件承受电压变化识别桥路开路故障；研究了基于谐波检测APF补偿算法与控制电源电流跟踪电网电压 APF 补偿算法的关系，指出容错型 APF 切换控制中更适合采用电源电流直接跟踪补偿算法；在三相四开关APF数学模型基础上，研究了直流母线中点偏移对三相四开关 APF补偿性能的影响，提出一种直流中点电压差值前馈补偿方法。扩展了配置直流侧储能的情况下，容错型APF的有功调节实现方法；设计了APF容错控制切换策略和硬件实现的电流滞环跟踪控制电路，在建立的三相四开关APF平台上，实验验证了所提方法的有效性。
유원전력려파기(APF)다기우삼상륙개관탁복，위제고기운행가고성，제출일충기우원건용여적삼상사개관용착형APF。침대삼상륙개관 APF 적고장판별，응용공솔기건승수전압변화식별교로개로고장；연구료기우해파검측APF보상산법여공제전원전류근종전망전압 APF 보상산법적관계，지출용착형 APF 절환공제중경괄합채용전원전류직접근종보상산법；재삼상사개관APF수학모형기출상，연구료직류모선중점편이대삼상사개관 APF보상성능적영향，제출일충직류중점전압차치전궤보상방법。확전료배치직류측저능적정황하，용착형APF적유공조절실현방법；설계료APF용착공제절환책략화경건실현적전류체배근종공제전로，재건립적삼상사개관APF평태상，실험험증료소제방법적유효성。
The active power filter(APF)is usually based on three-phase six-switch topology.In order to improve its reliability, a three-phase four-switch redundancy fault-tolerant APF topology is proposed.For an open-circuit fault in the three-phase six-switch APF,a fault identification method based on power device voltage change is proposed.By studying the relation between harmonic detection APF compensation algorithm and supply current tracking APF compensation algorithm,it is pointed out that the latter is more suitable for fault-tolerant APF application.Based on the mathematical model of three-phase four-switch APF,a direct current(DC)bus midpoint voltage feed-forward compensation algorithm is presented to compensate for the side-effect on output imbalance;if energy storage is configured on the DC side,APF active power regulation is also available.The APF fault tolerant switching control strategy is proposed.Based on a three-phase four-switch APF platform,the effectiveness of the proposed method is verified by experiment.