Fault protection applied to wind power plant and energy stabilization circuit
A technology for stabilizing circuits and fault protection, which is applied to emergency protection circuit devices, emergency protection circuit devices, circuit devices, etc. for limiting overcurrent/overvoltage, which can solve the problem of increasing the capacity of the converter and failing to provide complete protection. And other issues
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[0017] image 3 It is the topology structure of Embodiment 1 of the present invention. Such as image 3As shown, the structure of Embodiment 1 of the present invention is as follows: the voltage source converter VSC, the three-phase filter circuit, the chopper and the three-phase transformer Tr form a parallel power regulation system PCS; the first diode D1, the second two The pole transistor D2, the third diode D3, the first thyristor T1, the second thyristor T2 and the third thyristor T3 form a three-phase rectifier bridge Rf; the first diode D1, the second diode D2 and the third diode The anodes of the transistor D3 are connected to each other to form the first DC connection point PD1; the cathodes of the first thyristor T1, the second thyristor T2 and the third thyristor T3 are connected to each other to form the second DC connection point PD2; the first diode D1 The cathode is connected to the anode T1 of the first thyristor to form the first AC connection point PA1; th...
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