MOTOR CONTROL DEVICE

• Main Authors: AIZAWA TOSHIMITSU, KUSUDA MASAHIRO, SEKIHARA SOICHI, SATO EIJI
• Format: Patent
• Language: English; Japanese
• Published: 23.09.2016
• Subjects: CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a motor control device capable of executing processing at high speed while suppressing increase in power consumption.SOLUTION: According to an embodiment, vector operation means performs UVW/αβ coordinate conversion processing and αβ/dq coordinate conversion processing on the basis of current flowing in a winding of a motor detected by current detection means to calculate d-axis and q-axis current. Position information output means outputs information on a rotation position of the motor; current command output means outputs a d-axis and q-axis current commands so that a control state of the motor agrees with a control command given from the outside. Voltage control means outputs a d-axis and q-axis voltage commands so that the d-axis and q-axis current agree with the d-axis and q-axis current commands, respectively. Voltage command value operation means uses a dq/αβ coordinate converter to perform, on the basis of the d-axis and q-axis voltage commands, conversion to a value displayed by an α-β coordinate system, and uses an αβ/UVW coordinate converter to calculate a voltage command value for each phase of the motor. PWM signal operation means outputs a PWM signal in order to supply voltage agreeing with the voltage command value to the motor. Processing executed by two or more of the means described above is performed by a plurality of dedicated processors.SELECTED DRAWING: Figure 1 【課題】消費電力の増加を抑制しつつ、処理を高速に実行できるモータ制御用デバイスを提供する。【解決手段】実施形態によれば、ベクトル演算手段は、電流検出手段が検出したモータの巻線に流れる電流に基づきＵＶＷ／αβ座標変換処理及びαβ／ｄｑ座標変換処理を行いｄ軸及びｑ軸電流を求める。位置情報出力手段はモータの回転位置に関する情報を出力し、電流指令出力手段は、外部より与えられる制御指令に対しモータの制御状態が一致するようにｄ軸及びｑ軸電流指令を出力する。電圧制御手段は、ｄ軸及びｑ軸電流が夫々ｄ軸及びｑ軸電流指令に一致するようｄ軸及びｑ軸電圧指令を出力し、電圧指令値演算手段は、ｄ軸及びｑ軸電圧指令に基づきｄｑ／αβ座標変換器によりα−β座標系で表わした値に変換し、αβ／ＵＶＷ座標変換器によりモータの各相電圧指令値を求める。ＰＷＭ信号演算手段は、電圧指令値に一致する電圧をモータに供給するためＰＷＭ信号を出力する。これらのうち複数の手段が実行する処理を複数の専用プロセッサで行う。【選択図】図１