METHOD FOR DETECTING ROTATION SPEED OF INDUCTIVE MOTOR

摘要

PURPOSE: A method for detecting a rotation speed of an inductive motor is provided to obtain a target voltage within a short time without an acceleration time by using the practical current applied to a motor in order to boost a voltage. CONSTITUTION: A method for detecting a rotation speed of an inductive motor includes a voltage control process, an output frequency control process, and an output frequency selection process. The voltage control process is to control an output voltage by using the output current. The output frequency control process is to generate an output frequency by using the excited current. The output frequency selection process is to select the final output frequency by using the output of the voltage control process and the output frequency control process.