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    • 4. 发明授权
    • AC output control apparatus
    • 交流输出控制装置
    • US5680302A
    • 1997-10-21
    • US702159
    • 1996-08-23
    • Keiji IwataMichihisa MurasatoKenichi TanigawaSadaharu Tamoto
    • Keiji IwataMichihisa MurasatoKenichi TanigawaSadaharu Tamoto
    • H02M7/5387H02M7/5395
    • H02M7/53873
    • An inverter for DC/AC conversion includes an inverter bridge controlled by a PWM controller. The inverter has a first control loop for performing PWM control in accordance with the difference between the instantaneous AC value of an inverter output and an amplitude of waveform data read out from an AC waveform memory. The inverter also has a second control loop for multiplying the amplitude value of the waveform data by a coefficient adjusted on the basis of the error between the means AC current or voltage value of the inverter outputs and a target control value, and performing PWM control in accordance with waveform data having the adjusted amplitude. By using a delta scheme of finely increasing/decreasing at a time the coefficient by which waveform data is multiplied, an inverter with a high control precision and high stability can be obtained.
    • 用于DC / AC转换的逆变器包括由PWM控制器控制的逆变桥。 逆变器具有用于根据逆变器输出的瞬时AC值与从AC波形存储器读出的波形数据的幅度之差进行PWM控制的第一控制回路。 逆变器还具有第二控制回路,用于将波形数据的振幅值乘以基于逆变器输出的装置AC电流或电压值与目标控制值之间的误差调整的系数,并且执行PWM控制 根据具有调整幅度的波形数据。 通过使用一次精细地增加/减少波形数据相乘的系数的delta方案,可以获得具有高控制精度和高稳定性的逆变器。