CAJ | 학술논문

简要介绍了基于有功能量平衡原理的控制方法，将自适应电网电流滞环控制方法应用于三相四线制有源电力滤波器。该方法主要根据电网电压、有源电力滤波器接入点电压和电网电流的微分改变滞环电流宽度，从而实现开关频率的稳定；通过改变补偿电流的波形实现电网电流的正弦化，且在负载变化时，电网电流能实现动态稳定。该方法的特点是不需要传统的谐波电流检测，可实现数字化控制。使用Maflab仿真，其结果证明了该方法对三相四线制有源电力滤波器进行定频控制是可行的。
간요개소료기우유공능량평형원리적공제방법，장자괄응전망전류체배공제방법응용우삼상사선제유원전력려파기。해방법주요근거전망전압、유원전력려파기접입점전압화전망전류적미분개변체배전류관도，종이실현개관빈솔적은정；통과개변보상전류적파형실현전망전류적정현화，차재부재변화시，전망전류능실현동태은정。해방법적특점시불수요전통적해파전류검측，가실현수자화공제。사용Maflab방진，기결과증명료해방법대삼상사선제유원전력려파기진행정빈공제시가행적。
A novel self-adaptive hysteresis grid current control technique based on the active power balance theory for three- phase and four-wire active power filter was introduced. The algorithm changes hysteresis band according to the supply voltage, load voltage and slope of grid current wave to make the switching frequency stable. The grid current would keep dynamic stability when the load changes. The characteristic of the method is absolutely digital controlling without the traditional detection for harmonic current. Finally, the method for three-phase and four-wire active power filter current control with self-adaptive switching frequency was verified effective and feasible by simulation results of Madab.