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Pulse width modulated drive system for electronically commutated motors

  • US 20030210009A1
  • Filed: 05/10/2002
  • Published: 11/13/2003
  • Est. Priority Date: 05/10/2002
  • Status: Abandoned Application
First Claim
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1. A drive system for an electronically commutated motor, comprising:

  • an inverter for providing pulse width modulated drive signals for energizing an electronically commutated motor in response to control signals; and

    a controller for generating the control signals and for applying the control signals to the inverter such that winding pairs of the electronically commutated motor are energized in a selected sequence, wherein the pulse width modulated drive signals comprise first and second pulses having first and second pulse widths, respectively, that are unequal, wherein the average voltage applied to the energized winding pair is a function of a time difference between the first and second pulse widths.

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