Patent ID: 6014004
Filing Date: 2000-01-11
Classification: F25B,H02P,Y02B

Abstract:
A starter for use with a brushless motor having a rotor, said starter comprising:an inverter operable to convert a DC voltage into an AC voltage to drive the brushless motor;a reverse induction voltage detector circuit operable to detect a rotational position of the rotor from a reverse induction voltage of the brushless motor;a commutator circuit operable to generate a waveform from a signal of said reverse induction voltage detector circuit to drive said inverter;a starting circuit operable to output a waveform required to start the brushless motor;a first compulsory output circuit operable to output, for a specified time interval, a waveform having a voltage and a frequency at a level at which the brushless motor does not rotate; anda switching circuit operable to select an output of said first compulsory output circuit when the brushless motor is started, then selecting an output of said starting circuit, and finally selecting an output of said commutator circuit so as to operate said inverter.