【摘要】 在传统电压单环反馈PWM控制DC/DC变换器电路中,当输入电压大范围波动时,存在输出电压幅值波动大,谐波分量大,动态响应较慢等缺点。为此,提出了一种能够适应输入电压大范围波动的新型双电压PWM控制策略,并给出了其在BOOST电路中的实际应用。仿真与实验结果表明该新控制策略精度高,动态性能好,控制效果明显。更多还原

【Abstract】 Because of the ripple of the input DC power supply in the DC/DC circuit, the output harmonic amplitude of the voltage controlled by the single voltage-feedback controlled PWM converter is high, and the dynamic character is much slow. In this paper, a novel methodology to realize double-voltage controlled PWM, which adapted to the ripple of the DC power supply system, is presented and the control-rule in Boost circuit is presented, too.更多还原