×

Method for commutating a brushless motor and power supply for a brushless motor

  • US 6,028,406 A
  • Filed: 12/29/1998
  • Issued: 02/22/2000
  • Est. Priority Date: 07/16/1996
  • Status: Expired due to Term
First Claim
Patent Images

1. Method for commutation of a brushless motor supplied with electrical energy from a DC intermediary circuit via a multiphase inverter, comprising the steps of determining a first current value and a second current value, setting the duration of a commutation interval in dependence of the current values, and adding a correction value to the commutation interval determined by the speed of the motor, said correction value being determined from computing the difference between an actual value of the intermediary circuit current and a filtered, time delayed value of the intermediary circuit current and multiplying the difference by a weighting factor, and in which the moment of the actual value of the intermediate current is selected in dependence of the load on the motor.

View all claims
  • 5 Assignments
Timeline View
Assignment View
    ×
    ×