CAJ | 학술논문

为了解决数字电流控制环路带宽和硬件处理速度之间的矛盾,提出了基于前缘调制Buck型DC‐DC变换器的周期借用数字电流控制方法.针对谷值、平均值和峰值电流控制方法分别建立了相应的控制律;分析了它们可能存在的次谐振荡,并提出了相应的解决方案;分析了周期借用数字电流控制变换器的鲁棒性.仿真结果表明,基于前缘调制的周期借用数字电流控制达到了与无拍差电流控制相同的瞬态响应性能,同时更好地匹配了硬件处理速度.
위료해결수자전류공제배로대관화경건처리속도지간적모순,제출료기우전연조제Buck형DC‐DC변환기적주기차용수자전류공제방법.침대곡치、평균치화봉치전류공제방법분별건립료상응적공제률;분석료타문가능존재적차해진탕,병제출료상응적해결방안;분석료주기차용수자전류공제변환기적로봉성.방진결과표명,기우전연조제적주기차용수자전류공제체도료여무박차전류공제상동적순태향응성능,동시경호지필배료경건처리속도.
@@@@In this paper digital cycle‐borrowing current control method for buck DC‐DC converters with front‐edge modulation is proposed to solve the contradiction between the processing speed of hardware and loop bandwidth in the current control mode .The corresponding control laws for the valley ,average and peak current control methods have been established . The sub‐harmonic oscillation possibly existed has been analyzed , and the corresponding solutions are provided .The robustness of buck DC‐DC converters with digital cycle‐borrowing current control is also given .The simulation results show that the digital cycle‐borrowing current control for buck DC‐DC converters with front‐edge modulation achieved the same transient response performances as the no beat current control ,and also it matched the hardware processing speed better .