Methods and apparatus for pitch control power conversion

Details Methods and apparatus for pitch control power conversion Methods and apparatus for pitch control power conversion

H - Electricity

02

P

H02P 7/28 (2006.01) F03D 1/06 (2006.01) F03D 7/04 (2006.01) H02K 7/14 (2006.01) H02P 3/14 (2006.01)

Patent

CA 2538578

A method for powering a pitch motor drive system (400) for at least one DC pitch motor (410) of a wind turbine (100) includes rectifying a voltage using a bridge circuit (402) to thereby supply a DC link voltage to a bridge (404) comprising active switching devices (406), and utilizing at least one link capacitor (408) to smooth the DC link voltage and act as an energy sink and source for the DC pitch motor or motors (410).

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