Voltage balancing method of high-voltage DC modular multilevel converter (MMC) in fundamental frequency modulation
A technology of fundamental frequency modulation and high-voltage direct current, which is applied to conversion equipment without intermediate conversion to AC, conversion of DC power input to DC power output, and adjustment of electrical variables, etc. It can solve the problem of large computational burden for sorting and reduce the number of sorting times Effect
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[0036] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0037] Step 1: Given an MMC bridge arm with N submodules. For general purpose, define a reference signal M for it ref (t) as follows: M r e f ( t ) = Σ n = 0 ∞ M n c o s ( n ω t + θ n ...
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