CAJ | 학술논문

提出一种滞环斩波PWM控制和时间阀值比较相结合的开关磁阻电机特征位置估计方法。在电机驱动运行中，导通相采用滞环斩波控制，滞环斩波PWM开通时间随相电感增大而增大，当转子到达极对极对齐的特征位置时开始减小，所以通过比较相邻两个滞环斩波PWM开通时间的大小，即可得到特征位置的位置检索脉冲信号。在电机刚开通时刻，相电流从零上升到斩波上限，第一个滞环斩波PWM开通时间比其后面相邻的滞环斩波PWM开通时间长，因此在开通角位置也产生一个位置检索脉冲，但该位置检索脉冲信号是随着开通角变化而变化，不能作为位置估计的基准，为此，用了时间阀值比较的方法，除去该位置检索脉冲信号。由于算法中各估计相是相互独立的，所以该算法具有缺相容错运行性能。实验验证了算法的可行性和正确性。
제출일충체배참파PWM공제화시간벌치비교상결합적개관자조전궤특정위치고계방법。재전궤구동운행중，도통상채용체배참파공제，체배참파PWM개통시간수상전감증대이증대，당전자도체겁대겁대제적특정위치시개시감소，소이통과비교상린량개체배참파PWM개통시간적대소，즉가득도특정위치적위치검색맥충신호。재전궤강개통시각，상전류종령상승도참파상한，제일개체배참파PWM개통시간비기후면상린적체배참파PWM개통시간장，인차재개통각위치야산생일개위치검색맥충，단해위치검색맥충신호시수착개통각변화이변화，불능작위위치고계적기준，위차，용료시간벌치비교적방법，제거해위치검색맥충신호。유우산법중각고계상시상호독립적，소이해산법구유결상용착운행성능。실험험증료산법적가행성화정학성。
A feature position estimation method for switched reluctance motor was presented, utilizing hys-teresis chopping control and time threshold comparison. At motor drive, the hysteresis chopping control was carried out in the excited region, the hysteresis chopping open-time rose gradually, at the feature po-sition of the aligned position, the hysteresis chopping open-time dwindle suddenly. The position index pulse was estimated for the aligned position by comparing the adjoining hysteresis chopping open-time. At turn-on angle position, the phase current rose to hysteresis chopping upper limit from zero, the first hys-teresis chopping open-time by longer than the second hysteresis chopping open-time, and the position in-dex pulse was obtained, but the position index pulse changed along with turn-on angle,so the position in-dex pulse of the turn-on angle position must be eliminated for the feature position estimation, and the method of the time threshold comparing was presented. For position estimation phase independence, the fault-tolerant was enhanced, the experiment results demonstrate the feasibility and the validity.