Cascade current converter
A technology of converters and converter bridges, which is applied in the field of converters, can solve the problems of difficult realization of dynamic voltage equalization, low output waveform distortion rate, high output waveform distortion rate, etc., to achieve easy modular design, waveform distortion The effect of low rate and small dV/dt
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[0028] The present invention will be described in detail below with reference to the drawings and embodiments.
[0029] Such as Figure 3~5 As shown, the present invention includes at least two converter bridge arms 1, wherein each converter bridge arm 1 includes two bridge arm units 11, 12, and the bridge arm unit 11 includes n series-connected B-shaped bridges M j1 (j1=1...n), the bridge arm unit 12 includes n series-connected B-shaped bridges M j2 (j2=n+1...2n). The above n is the number of cascades, n≥1, which is selected according to specific actual conditions. Two converter arms 1 form a single-phase bridge converter 2, and three converter arms 1 form a three-phase bridge converter 3. The converter topology of the present invention is mainly used for the development of voltage source converters of medium and high voltage levels, including pulsed power supplies, frequency converters, static var generators, active power filters, direct current transmission, unified power flow...
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