Ｖ／ｆ制御によるファン・ポンプモータのセンサレス正弦波駆動

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書誌事項

タイトル別名
  • Sensorless Sinusoidal Drives for Fan and Pump Motors by V/f Control
  • V f セイギョ ニ ヨル ファン ポンプモータ ノ センサレス セイゲンハ クドウ

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説明

This paper proposes sensorless sinusoidal driving methods of permanent magnet synchronous motors for fans and pumps by V/f control. The proposed methods are simple methods that control the motor peak current constant by voltage or frequency control, and are characterized by DC link current detection using a single shunt resistor at carrier wave signal bottom timing. As a result of the dumping factor from square torque load characteristics of fan and pump motors, it is possible to control stable starting and stable steady state by V/f control. In general, pressure losses as a result of the fluid pass of fan and pump systems are nearly constant; therefore, the flow rate and motor torque are determined by revolutions. Accordingly, high efficiency driving is possible by setting corresponding currents to q-axis currents (torque currents) at target revolutions. Because of the simple current detection and motor control methods, the proposed methods are optimum for fan and pump motor driving systems of home appliances.

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