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POSITION SENSORLESS CONTROL DEVICE FOR PERMANENT MAGNET SYNCHRONOUS MOTOR
POSITION SENSORLESS CONTROL DEVICE FOR PERMANENT MAGNET SYNCHRONOUS MOTOR
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机译：永磁同步电动机的位置传感器控制装置
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摘要
A basic wave current detection unit (8) detects the current in a zero-voltage vector period (V7 or V0) for PWM control. A current change-amount detection unit (11) calculates the current difference for an actual current corresponding to a current differential, from a current detection value. A current difference component calculation unit (12) calculates electromotive force from the current detection value, the amount of voltage drop due to motor resistance (R), inductance (L), and an angular frequency command (ω*), and converts same to a current difference component arising from the voltage component thereof, using the inductance (L) and the time difference (∆Tp) for the current difference. Correction angular frequency command calculation units (13-15) calculate a correction angular frequency (Δωp*) by adding the current difference for the actual current and the current difference component, multiplying the filter and the correction gain, and multiplying an angular frequency weighting function (Ｋω) approximating the deduction of an angular frequency command component.
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机译：基波电流检测单元（8）检测零电压矢量周期（V7或V0）中的电流以进行PWM控制。电流变化量检测单元（11）根据电流检测值计算与电流差相对应的实际电流的电流差。电流差成分计算单元（12）根据电流检测值，电动机电阻（R），电感（L）和角频率指令（ω * ），并使用电感（L）和电流差的时间差（∆Tp）将其转换为由电压分量产生的电流差分量。校正角频率指令计算单元（13-15）通过将实际电流的电流差与电流差分量相加来计算校正角频率（Δω p * ），将滤波器和校正增益相乘，再乘以角频率加权函数（K ω）来近似角频率指令分量的推导。
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