电网技术2001，Vol.25Issue(4)：17-20,4.
自然采样SPWM逆变电源的谐波分析及抑制策略
ANALYSIS AND RESTRAINT OF HARMONICS FOR INVERTING POWER SUPPLIES USING NATURAL SAMPLING SPWM
摘要
Abstract
In the SPWM inverters, harmonic content of nonsinusoidal voltage and current can not only cause harmonic loss of the load, but also affect the control performance of the whole system to a certain extent. Therefore, using for reference of relative studies home and abroad, a detailed analysis on harmonics in output voltage and current of voltage-source IGBT-SPWM inverters and their production law is carried out.Simultaneously,The relevant strategies for restraining harmonics are presented in this paper. They are:selecting appropriate frequency of carrier wave to eliminate harmonics of low order and those of a certain odd order; accurately implementing the selected frequency of carrier wave to avoid harmonics of even order which arises only in asynchronous modulation; and injecting proper harmonics into the inverter to improve the utilization ratio of the voltage when output harmonic content is not increased. The above mentioned strategies for restraining harmonics are applied to 35 kVA inverting power supplies for air conditioners of passenger cars. Experimental results show that the presented methods are feasible.关键词
逆变器/谐波/正弦脉宽调制分类
信息技术与安全科学引用本文复制引用
吴忠,李红,左鹏,刘伟志..自然采样SPWM逆变电源的谐波分析及抑制策略[J].电网技术,2001,25(4):17-20,4.
