DEVICE AND METHOD FOR CONTROLLING PERMANENT MAGNET TYPE SYNCHRONOUS MOTOR

• Main Authors: IYODA MASANORI, YAMAMOTO TOMOO, FUKAO YOHEI
• Format: Patent
• Language: English; Japanese
• Published: 28.09.2015
• 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 prevent, in a control device for a permanent magnet type synchronous motor, an excessive current flow at the activation of the electric motor.SOLUTION: Current command value generator units 111 and 112 generate, as an ACR control value, a current command value which instructs a current to apply to a motor 2 from a power converter 4. A set unit 120 sets a time variation pattern of the current command value at the activation of the motor 2, into the current command value generator unit 111. At the activation of the motor 2, the current command value generator unit 112 sets 0, as the current command value of a q-axis current. The current command value generator unit 111 varies the current command value of a d-axis current, according to the time variation pattern set by the set unit 120. As the time variation pattern, there is used a time variation pattern in which the current command value is increased from 0 to a predetermined target value for a predetermined time period, by the avoidance of an abrupt increase exceeding a certain amount. 【課題】 永久磁石型同期電動機の制御装置において、電動機の起動時に過大な電流が流れるのを防止する。【解決手段】 電流指令値発生部１１１および１１２は、ＡＣＲ制御値に、電力変換器４から電動機２に流す電流を指示する電流指令値を発生する。設定部１２０は、電動機２の起動時における電流指令値の時間変化パターンを電流指令値発生部１１１に設定する。電動機２の起動時、電流指令値発生部１１２はｑ軸電流の電流指令値を０とし、電流指令値発生部１１１は、設定部１２０により設定された時間変化パターンに従い、ｄ軸電流の電流指令値を変化させる。時間変化パターンとしては、一定量を越える急激な増加を避け、所定時間を掛けて０から所定の目標値に上昇する時間変化パターンが用いられる。【選択図】図１