摘要
在对正弦脉宽调制(SPWM)信号进行分析的基础上,提出了一种改进的SPWM信号计算方法,即对脉宽差幅值进行分段线性量化,使求解整个SPWM信号的脉宽只需要很少的几个特征参数.该方法与传统SPWM方法相比,不但大大降低了实现的复杂性,而且达到了预期的谐波抑制效果,经复杂可编程逻辑器件(CPLD)验证,实际的谐波测试结果表明本方法是有效的.
According to the study on SPWM signal, this paper proposed a SPWM generate method which utilizes piecewise linear approximation to quantify the pulse-width's difference between two adjacent pulses. With this method, it only needs few characteristic parameters to calculate the SPWM signal and greatly reduces the complexity of the realization of SPWM signal. This method was validated by the use of CPLD and the practical test results show that it has a good performance in harmonic-suppression.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2003年第9期1380-1383,1387,共5页
Journal of Shanghai Jiaotong University
基金
中国博士后科研基金
关键词
谐波
抑制调制器
正弦脉宽调制
分段线性近似
Approximation theory
Electric power systems
Harmonic analysis
Signal processing
