energy converter, and method of converting energy from a renewable energy source having a variable power generation capacity

摘要

energy converter, and energy conversion method of a renewable energy source having a variable power generation capability a power converter configured to improve energy capture in a wind turbine during low wind speed operation is described . The power converter converts the energy generated by the wind turbine alternator into an ac current suitable for distribution to a utility grid or an independent load. The power converter is configured to operate in multiple modes of operation using both synchronous and non-synchronous control methods to increase the operating range of the power converter. During non-synchronous operation, the power converter uses a modulation routine, which can vary the dead time compensation period over a constant modulation period or vary the modulation period with a constant time. Direct transfer between non-synchronous and synchronous control methods with low total harmonic distortion (thd) improves the power generation range for wind generators.