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    • 10. 发明申请
    • TRANSFORMERLESS TWO-PHASE INVERTER
    • 无变压两相逆变器
    • WO2003038982A1
    • 2003-05-08
    • PCT/CA2002/001680
    • 2002-10-31
    • GLOBAL THERMOELECTRIC INC.
    • ZUBIETA, Luis
    • H02M7/5387
    • H02M7/53871
    • A DC to two-phase AC inverter that includes three one-leg switch mode inverters circuits or a three-phase bridge circuit and a controller/driver circuit. The controller/driver circuit includes a triangular waveform generator and two sinusoidal reference waveform generators out of phase with each other, the sinusoidal waveforms generated at the desired AC output frequency, and the triangular waveform generated at a higher frequency. The controller/driver circuit is configured to drive one leg of the bridge circuit with a 50% duty cycle at the triangular waveform frequency and the other two legs at the triangular waveform frequency with pulse width modulated signals, the pulse widths of each signal varying with a discrete one of the sinusoidal waveforms. Each phase of two-phase AC is provided by the inverter between the leg driven at the 50% duty cycle and a discrete one of the other legs.
    • 包括三个单脚开关模式逆变器电路或三相桥式电路以及控制器/驱动电路的直流二相交流逆变器。 控制器/驱动电路包括一个三角波形发生器和两个相位相异的正弦参考波形发生器,在所需的交流输出频率下产生的正弦波形,以及以较高频率产生的三角波形。 控制器/驱动器电路被配置为以三角波形频率以三角波形频率的50%占空比驱动桥电路的一条腿,并以三角波形频率驱动具有脉冲宽度调制信号,每个信号的脉冲宽度随着 一个离散的正弦波形之一。 两相交流的每相由逆变器在以50%占空比驱动的支路与其他支路之间分立的一个提供。