MOTOR CONTROLLER, SHEET CONVEYING DEVICE, AND IMAGE FORMING APPARATUS

To solve a problem in which limiting a q-axis current command value to 2A inhibits output of torque equal to or larger than torque corresponding to a sinusoidal waveform with an amplitude of 2A, and in such a situation, when an increase in load torque applied to a motor becomes 2A or more, the motor...

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Bibliographic Details
Main Author HAMADA SHUHEI
Format Patent
LanguageEnglish
Japanese
Published 03.08.2023
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
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Summary:To solve a problem in which limiting a q-axis current command value to 2A inhibits output of torque equal to or larger than torque corresponding to a sinusoidal waveform with an amplitude of 2A, and in such a situation, when an increase in load torque applied to a motor becomes 2A or more, the motor might be out of step.SOLUTION: Current limiting is provided for a current value of a stationary coordinate system. As a result of this, larger torque can be generated than in a case where limitation is provided for a current command value of a rotary coordinate system. As a result of this, a current having a magnitude larger than a predetermined magnitude can be prevented from flowing in winding of a motor, and the motor can be prevented from getting out of step.SELECTED DRAWING: Figure 6 【課題】 ｑ軸電流指令値が２Ａに制限された場合、振幅が２Ａである正弦波状の波形に対応するトルク以上のトルクを出力できない。このような状態において、モータにかかる負荷トルクが２Ａよりも大きくなると、モータが脱調してしまう可能性がある。【解決手段】 静止座標系の電流値に対して電流制限が設けられる。この結果、回転座標系の電流指令値に制限を設ける場合よりも、より大きなトルクを発生させることができる。この結果、モータの巻線に所定の大きさよりも大きい電流が巻き線に流れないようにしつつ、モータが脱調することを抑制することができる。【選択図】 図６
Bibliography:Application Number: JP20220008407