Non-flux observation doubly-fed induction generator low voltage ride-through control method and system
A low-voltage ride-through, double-fed fan technology, applied in the direction of single-grid parallel feeding arrangement, etc., can solve the problems of increasing system complexity, deviation of resistance and inductance from normal operating conditions, affecting the accuracy of flux linkage observation, etc.
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[0046] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.
[0047] The invention relates to the field of low-voltage ride-through (LVRT) control in a doubly-fed wind power generation system, in particular to a low-voltage ride-through excitation control method and system for a doubly-fed wind turbine that does not require flux linkage observation. The invention can solve the deficiency that various excitation control low-voltage methods in the prior art require a flux linkage observation link to produce instructions, and can be suitable for traversing deep grid faults, without flux linkage observation, and is simple and feasible.
[0048] The present inv...
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