Controlling brushless 3-phase electric motor, involves using block commutation and operating motor with commutation angle less than 180 degrees and greater than 120 degrees

摘要

The method involves using block commutation and operating the electrical motor so that the commutation angle is less than 180 degrees and greater than 120 degrees. A natural number of successive states of equal duration is defined in each of which two or three of the phases (P1-P3) have a non-zero phase voltage. The state duration is derived from the motor speed and the number of poles. AN Independent claim is also included for the following: a brushless 3-phase electric motor.