Method for variable-frequency control of an inductive motor

摘要

The invention can be used for systems of controlled electric drives. The inventive method consists in controlling a spatial relative position between a primary magnetic field and a rotor by modifying the frequency of the voltage supplied to the motor. The inventive method increases the energy datum of the variable-frequency controlled motors, functioning in a motor operation and a generator mode, by improving the conditions for creating an electromagnetic torque with the aid of magnetic field vectors. Said method can be used for systems provided with an electronic hardware support and with a computer-aided numerical control of the controlled drives during the variable-frequency, frequency-current and vector control.