| 摘要 |
PURPOSE:To provide a circuit and method for starting a sensorless motor which is simple in a configuration and can be started quickly. CONSTITUTION:In a method for starting sensorless motor consisting of a rotor 1 with a permanent magnet and a stator with excitation coils 2A and 2B for generating rotary magnetic field for rotating the rotor 1, the excitation coils 2A and 2B are excited, one at a time, by an excitation current conduction signal from a pulse sequence circuit for determining the excitation position of the rotor 1, resetting the integral value of the induction voltage of the other excitation coil, and inputting a speed command and an excitation voltage command to a power circuit 3 for exciting the excitation coils 2A and 2B. |
