摘要
提出了规则对称采样法与自然采样法结合的方法对SPWM进行改进,利用DSP内部定时器模块产生载波信号并结合经DSP的PWM口输出的H桥驱动信号,经硬件隔离和驱动模块后送给IGBT组成的H桥,从而产生单相正弦逆变电源。实验表明改进后的SPWM算法波形失真小,正弦特性更好,在望远镜的应用上可靠性高。
It presents a symmetric sampling method combined with natural sampling method to improve SPWM. The signals are output to PWM port of the DSP according to the carrier which the internal timer of the DSP generates. After the isolated and the driving circuit, the PWM signals are sent to H bridge which composed by IGBT, thereby the single - phase sine inverter power produced. Experiments show that the improved SPWM algorithm can satisfied with telescope＇s application, and the sine characteristic of the power is better than the traditional method.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2013年第6期687-690,共4页
Nuclear Electronics & Detection Technology
基金
国家重点基金资助(10833004)
中科院方向性重点项目30-100米光学/红外望远镜的方案和关键技术预研资助(A06)
