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发明授权
CN101356720B 电流控制型电力转换装置 有权

电流控制型电力转换装置
摘要：
本发明提供一种电流控制型电力转换装置，该电流控制型电力转换装置具有：将直流电压转换为三相交流电压的功率模块(3)；检测功率模块(3)的交流侧电流的电流传感器(1、2)；检测功率模块(3)的直流侧电流的并联电阻(7)和放大器(6)；以及控制部(11)，其根据由电流传感器(1、2)检测出的交流侧电流、和由并联电阻(7)和放大器(6)检测出的直流侧电流，通过使用空间向量调制法的脉冲宽度调制来控制功率模块(3)。上述控制部(11)根据由并联电阻(7)和放大器(6)检测出的直流侧电流中与交流侧电流的规定相的电流量对应的电流量，校正由电流传感器(1、2)检测出的上述交流侧电流的振幅和偏移。
摘要（英）：

A current control type power conversion device includes: a power module (3) for converting DC voltage into 3-phase AC voltage; current sensors (1, 2) for detecting AC side current of the power module (3); a shunt resistor (7) and an amplifier (6) for detecting the DC side current of the power module (3); and a control unit (11) for controlling the power module (3) by a pulse width conversion using the spatial vector modulation method according to the AC side current detected by the current sensors (1, 2) and the DC side current detected by the shunt resistor (7) and the amplifier (6). The control unit (11) corrects the amplitude and the offset of the AC side current detected by the current sensors (1, 2) according to the current corresponding to the current of a predetermined phase of theAC side current among the DC side current detected by the shunt resistor (7) and the amplifier (6).

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