摘要
本文评估了几种用微处理机软件产生变频驱动的 PWM 序列的方案。提出了一种采用微处理机的 PWM调制器,这种调制器采用增量调制方法,可实时产生 PWM 序列。对这种调制器的输出频谱从理论上进行了分析,并详细地讨论了开关频率与逆变器输出谐波的关系。
In the paper,several switching strategies are appraised which implement variable Frequency Drive PWM Sequence using micropiocesser.The now microprocessor-based PWM mo- dulator is presented.The modulator adopts delta modulation method and can generate the PWM sequence in“real time”.The spectrum of the modulator output is analyzed in theory.The relationbetween switching frequency and the harmonic of the inverter output is discussed in detail.
出处
《电气传动》
北大核心
1989年第2期58-66,共9页
Electric Drive
关键词
逆变器
增量调制
单片机
Delta modulation
Single chip microprocessor
