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The doubly fed induction generator (DFIG) is an important component of wind turbine systems. In order to identify incipient faults quickly and ensure safe operation of DFIG, this paper proposes a way to diagnose inter-turn short circuit fault at stator windings, which is based on multi-circuit theory. The mathematical model of DFIG is established in this paper and simulation of DFIG in normal operation...
Blockage of hollow strands' waterway can cause cooling-water flux decreasing, cooling effect falling and stator bar overheating in water-cooling turbo-generators, which could induce generators not to operate normally. It helps to calculate precisely temperature field of generators and diagnose incipiently the plugging fault of cooling-waterway that one study fluid characteristic of cooling-water on...
The inter-turn short circuits fault of field windings is a common fault in generators. According to the multi-loop method of AC machines, this paper proposes multi-loop mathematical model of turbine generator with inter-turn short circuits fault of field windings. Based on the model, the normal operation and the short circuits fault operation of generator with no load have been simulated combining...
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