Centralized energy consumption device topology of flexible direct-current power transmission system
A technology for energy-consuming devices and power transmission systems, which can be used in output power conversion devices, wind power generation, electrical components, etc., and can solve problems such as poor reliability.
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Embodiment 1
[0038] according to figure 2 As shown, one switch assembly m is provided with a switch sub-module, and a switch sub-module includes a first controllable semiconductor device T1, a second controllable semiconductor device T2, an absorbing resistor R1, a voltage equalizing resistor R2, a voltage limiter MOV, diode D1 and snubber capacitor C;
[0039] Wherein the first controllable semiconductor device T1 is preferably an integrated gate commutated thyristor IGCT, and the second controllable semiconductor device T2 is preferably a thyristor.
[0040] The anode of the integrated gate commutated thyristor IGCT is connected to the negative pole of D1 of the diode, and the cathode of the integrated gate commutated thyristor IGCT is connected to the positive pole of the diode. The anode of the thyristor is connected to the anode of the integrated gate commutated thyristor IGCT, and the cathode of the thyristor is connected to the cathode of the integrated gate commutated thyristor I...
Embodiment 2
[0043] according to image 3 As shown, the present embodiment is different from Embodiment 1. The switch sub-module is formed by connecting more than two in series, and the negative port of the switch sub-module is connected to the positive port of the adjacent switch sub-module; and so on, composed of multiple The switch sub-modules are cascaded to form the switch assembly m; the advantage of cascading several switch assemblies m to form the energy consumption device M is that structural components can be saved, and the cost of the energy consumption device can be reduced compared with Embodiment 1.
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