CAJ | 학술논문

提出并研究了一种新颖的开关变换器控制方法——多频率(multifrequency)控制方法。该方法在每一个开关周期结束时刻采样输出电压，对其所处的电压区间进行判断，并由此采用相应频率的不同控制脉冲对开关变换器进行控制，以调整变换器输出电压。多频率控制方法具有控制算法简单、开关变换器稳定性好、瞬态响应速度快、电磁干扰噪声小、轻载效率高等优点。相比于双频率控制，多频率控制不仅可以拓宽开关变换器输出功率范围，还可以降低开关变换器输出电压纹波。实验结果验证了理论分析的正确性。
제출병연구료일충신영적개관변환기공제방법——다빈솔(multifrequency)공제방법。해방법재매일개개관주기결속시각채양수출전압，대기소처적전압구간진행판단，병유차채용상응빈솔적불동공제맥충대개관변환기진행공제，이조정변환기수출전압。다빈솔공제방법구유공제산법간단、개관변환기은정성호、순태향응속도쾌、전자간우조성소、경재효솔고등우점。상비우쌍빈솔공제，다빈솔공제불부가이탁관개관변환기수출공솔범위，환가이강저개관변환기수출전압문파。실험결과험증료이론분석적정학성。
Multifrequency control method, a novel control method for switching converters, is proposed and investigated in this paper. The control pulse with different frequency which is determined according to the voltage intervals of the sampled output voltage at the end of previous switching period is applied to regulate the output voltage. In contrast to bifrequency control, the multifrequency control not only extends the output power range, but also reduces the output voltage ripple; it has merit of simple control algorithm, strong stability, fast dynamic response, low electromagnetic interference (EMI) noise, and high efficiency at light load. Experimental results demonstrate the correctness of the theoretical analyses.