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Interior permanent magnet synchronous motors (IPMSMs) are controlled by either a rotor position sensor or a sensorless control method, which enables highly efficient operation. The voltage-current phase difference control method is a sensorless control method that offers low cost and a simple control system, which is based on V/f control. However, speed ripple occurs under a fluctuating load because...
In many applications that use IPMSMs, the miniaturization of the motor is desired from the viewpoint of space saving and manufacturing cost reduction. To achieve this miniaturization, it is necessary to make the motor's torque density and power density high. In this paper, the influence of the ratio of the outer diameter to the stack length (D/L) on the maximum torque and power in IPMSMs is examined...
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