The speed adjustment of the rotating machinery such as the centrifugal pump is the process of adjusting the speed.
Can be adjusted to achieve the speed of
centrifugal pump and running parameters (characteristic data) of the best matching.
1.Variable pole logarithmic speed control
Through the pole changing speed regulating motor to realize the 2--4 kind of pole logarithm of the speed control. Change the speed range is quite limited, so this speed control method, for the
centrifugal pump is not the preferred.
2. Variable slip speed
Change the rotor potential phase of the method to achieve speed. In the process of changing the speed of the motor, the rotor can generate a large slip power loss. So this kind of control method for small power motor (as for wet air
hot water circulating pump used).
Three, variable frequency speed regulation
Use frequency converter for speed regulation. Variable frequency speed regulation is the most commonly used and ideal speed regulation method of three phase induction motor. The advantage is that the best speed regulation performance, easy to use, high efficiency, the current high-rise building water supply is the most commonly used in high-rise building variable frequency pump need to know you can click on the variable frequency pump view.
