Pitch drive system with a switching device controlled back-up power supply and method thereof
A wind turbine pitch drive system, comprising an electric grid for supplying electrical power, a motor for driving a pitch actuator, an electronic converter for controlling the motor and a back-up energy storage unit for supplying electrical power, wherein the electronic converter comprises a DC-lin...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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