Method and control unit for controlling fan motors

Details Method and control unit for controlling fan motors Method and control unit for controlling fan motors

2003-10-21

2009-10-06

Benson, Walter (Department: 2837)

Electricity: motive power systems

Plural, diverse or diversely controlled electric motors

Running-speed control

C318S599000, C318S811000, C318S067000, C318S077000

Reexamination Certificate

active

07598687

ABSTRACT:
A method for controlling a first fan motor using a first pulse width modulation signal having a first pulse control factor, and for controlling a second fan motor using a second pulse width modulation signal having a second pulse control factor, so as to bring about an overall air output according to a prespecified setpoint air output by the operation of the first and the second fan motor, a low-pass filter being provided in parallel to the fan motors in order to smooth out voltage fluctuations in voltage supply lines, wherein the first and the second pulse control factor are made available independently of each other, in order to minimize the current through the low-pass filter.

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English Language Abstract of JP 3-22019.
English Language Abstract of DE 202 15 697.

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