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Firstly, we need to understand the working principle of permanent magnet motors. Permanent magnet motor is a motor that generates torque through the interaction between permanent magnets and current, and its torque is proportional to the current. Therefore, during startup, sufficient current needs to be provided to generate enough torque for the motor to start.

In general, permanent magnet motors cannot be started directly. Because the torque of the motor is relatively small during startup, a larger current is required to generate sufficient torque, and the voltage of the power supply cannot meet this demand. Therefore, some special measures need to be taken during startup.

A common method is to use a soft starter. A soft starter is an electronic component that can gradually increase the voltage of the power supply, thereby accelerating the motor and avoiding the problem of excessive current during startup. Soft starters can also achieve smooth starting and stopping of motors, extending their lifespan.

In addition, the star delta startup method can also be used. This method first connects the three windings of the motor into a star shape, and converts it into a triangle shape during startup, thereby reducing the current during startup. However, this method is only applicable to motors with lower power, and is not effective for larger permanent magnet motors.

In short, permanent magnet motors cannot be started directly and special measures need to be taken. Soft starter and star delta starting method are commonly used methods, but the appropriate starting method should be selected based on the power of the motor and the usage environment. Mastering these skills will enable you to easily handle various situations.

Hengda Electric has always been dedicated to the research and development, production, and service of permanent magnet synchronous motors. With advanced technology and equipment, lean manufacturing processes, reliable product quality, and satisfactory after-sales service, the company provides customers with the most suitable motor professional solutions and creates greater social value.