Submodule unit of voltage source transverter based on full control components
A technology of voltage source converters and sub-modules, applied in output power conversion devices, conversion of AC power input to DC power output, electrical components, etc., can solve the problem of reducing work efficiency and operability, equipment dv/dt stress Large, inconvenient equipment maintenance and other problems, to achieve the effect of convenient installation and transportation, low output voltage change rate, convenient installation and maintenance
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[0041] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0042] The sub-module unit of the voltage source converter of this embodiment adopts an independent control mode, and the electrical schematic diagram of the sub-module unit is as follows figure 1 As shown, this is the parallel structure of the IGBT module and the capacitor of the half-bridge structure. In this embodiment, the half-bridge structure or the upper half of the H-bridge structure is defined as the upper-side IGBT module, for example figure 1 The IGBT module composed of the IGBT (S1) and the built-in diode D1 in parallel is the upper tube IGBT module (referred to as the upper IGBT), and the lower part of the half bridge structure or the H bridge structure is the lower tube IGBT module, for example figure 1 The IGBT module composed of the IGBT (S2) and the built-in diode D2 connected in parallel is a lower-side...
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