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The object of the research work is the multilevel high-voltage converters with Cascaded H-Bridges (CHB) controlled by two different methods. They are the sorting algorithm and the fundamental harmonic displacement method. The comparison was carried out on the basis of mathematical modeling for the case of cascade connection of 10 cells with the rated voltage on the capacitors equal to 1000 V. Such...
Five sorting-based methods for the modulation of modular multilevel converters are implemented on a test bench and evaluated regarding their switching frequency, voltage balancing capability, harmonics, voltage error, and computation time. In contrast to already published methods, the cells considered here can omit additional switch transitions when entering PWM mode. This reduces the switching frequency...
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