MMC (modular multilevel converter) equivalent modeling method with module latching function
A technology of equivalent modeling and sub-modules, which is applied in the field of effective modeling, can solve the problems of not involving sub-module blocking functions and increasing the burden of simulation
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[0043] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0044] The invention provides an MMC equivalent modeling method with a sub-module blocking function, the MMC is a three-phase six bridge arm structure, and each bridge arm is composed of sub-module cascades; the sub-modules include parallel IGBT series branches and capacitor branch; the IGBT series branch is composed of two series connected IGBT modules; the MMC sub-module circuit diagram is as follows figure 1 shown.
[0045] The equivalent circuit of the sub-module is as figure 2 As shown, including: the IGBT series branch of the sub-module is equivalent to a resistor series branch; the capacitor branch is equivalent to a resistor and a power supply series branch;
[0046] The IGBT module includes IGBT module I and IGBT module II. IGBT module I and IGBT module II are composed of IGBT devices and diodes connected in ...
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