CAJ | 학술논문

为提高有源电力滤波器(active power filter，APF)的故障容错能力，提出了一种基于滞环空间矢量脉宽调制(space vector pulse width modulation，SVPWM)策略的APF故障容错方法。逆变器发生故障时，利用故障状态下有效电压矢量的合成矢量等效替代原控制算法选定的电压矢量，保证APF能在故障状态下继续工作。该方法是在原控制算法的基础上进行容错控制，不需要备用容错算法，降低了计算量。此外，该方法不需要精确估计参考电压值和阻抗参数值，克服了参数估计误差所带来的影响，而且可以实现参数的解耦控制，能够显著提高 APF 的工作可靠性。仿真和实验结果验证了该方法的有效性。
위제고유원전력려파기(active power filter，APF)적고장용착능력，제출료일충기우체배공간시량맥관조제(space vector pulse width modulation，SVPWM)책략적APF고장용착방법。역변기발생고장시，이용고장상태하유효전압시량적합성시량등효체대원공제산법선정적전압시량，보증APF능재고장상태하계속공작。해방법시재원공제산법적기출상진행용착공제，불수요비용용착산법，강저료계산량。차외，해방법불수요정학고계삼고전압치화조항삼수치，극복료삼수고계오차소대래적영향，이차가이실현삼수적해우공제，능구현저제고 APF 적공작가고성。방진화실험결과험증료해방법적유효성。
To improve the fault tolerance ability of active power filter (APF), a hysteresis space vector pulse width modulation (SVPWM) strategy based fault tolerance method is proposed, that is, when inverter failure happens, the resultant vector of available voltage vector under fault condition is used to equivalently substitute the voltage vector selected by original control algorithm to ensure APF enable to keep working under fault condition. The essence of the proposed method is to perform tolerant control on the basis of original control algorithm, so the spare tolerant algorithm is not needed, thus the calculated amount is reduced. Besides, the values of voltage reference and impedance parameter are not to be estimated accurately, therefore the affect due to parameter estimation error can be overcome and the decoupling control of parameters can be implemented to enhance operational reliability of APF obviously. The effectiveness of the proposed method is validated by results of simulation and experiments.