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A Comparison of SVPWM and SPWM in AC Ship Power Propulsion Systems
Author(s): 
Pages: 93-96,102
Year: Issue:  2
Journal: TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY

Keyword:  交流电力推进系统脉宽调制谐波数字信号处理器;
Abstract: 交流电力推进系统的设计需满足高效率、低谐波和低噪声的要求.本文介绍了推进电机变频调速技术中正弦脉宽调制(SPWM)和空间矢量脉宽调制(SVPWM)的生成原理,讨论了实际舰船推进应用中死区时间的插入以及过窄脉冲的处理方法,在此基础上利用数字信号处理器(DSP)TMS320LF2407A进行了实现,并对实验所得波形的谐波含量进行了计算与比较分析.实验结果表明,与SPWM相比,SVPWM具有谐波畸变率低、开关损耗小以及电压利用率高等优点,为舰船交流变频推进系统的PWM方式提供了一种解决方案.
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