(From the viewpoint of motor control, when the number of poles is doubled, the speed will be halved, and when the number of poles is quadrupled, the speed will be quartered, therefore the control method does not depend on the number of poles.) The phase represents the number of independent coils for fixed stators.
Number of phases = number of independent windings The number of phases of a stepper motor refers to the number of independent windings inside the motor. Common ones are 2-phase, 3-phase, 4-phase, 5-phase, etc., among which 2-phase stepper motors are the most widely used.
Brushed DC motors strictly do not have phases - they use a commutator to simulate "two-phase" or "four-phase" behavior. But in stepper motors and AC motors, the number of phases has a clear electrical definition. Number of phases = number of independent windings
Three-phase motor is a motor with three independent coils at 120 degree intervals. A slot represents the number of coils of fixed stators. Three-phase motor has a multiple of 3 slots. 2-4. Sequence of a Brushless Motor 2-1-1. Driving Principle of a Motor (1) 2-1-2. Driving Principle of a Motor (2) 2-2. Brushed DC Motors and Brushless Motors 2-3.
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3-phase motors are a common type of motor. The most basic 3-phase brushless motor is a 2-pole 3-slot motor. There are various combinations such as 4-pole 3-slot, 4-pole 6 …
In this blog, we will cover all the different types of electric motors with their applications and benefits and how to choose electric motor.
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