Cyclic modulation method and system of modular multilevel DC converter, and medium

The invention discloses a cyclic modulation method and system for a modular multi-level direct current converter and a medium, and the method comprises the steps: determining the number N of operating sub-modules in a single stack in the modular multi-level direct current converter, a modulation coe...

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Hauptverfasser:	GU RUNAN, DUAN JINPEI, ZHANG DONGLAI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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creator	GU RUNAN DUAN JINPEI ZHANG DONGLAI
description	The invention discloses a cyclic modulation method and system for a modular multi-level direct current converter and a medium, and the method comprises the steps: determining the number N of operating sub-modules in a single stack in the modular multi-level direct current converter, a modulation coefficient K, and the starting angle and duty ratio of a square wave driving pulse of a tube on each sub-module, and N is a positive integer greater than or equal to 1; determining a matrix PN * N in a preset mode; judging whether the greatest common divisor of N and K is equal to 1; if the largest common divisor of N and K is not equal to 1, a matrix R is obtained through calculation in a preset mode; controlling the sub-modules in the stack according to the combination sequence in the matrix R and circulating; and if the greatest common divisor of N and K is equal to 1, controlling the sub-modules in the stack according to the combination sequence in the matrix P and circulating. According to the invention, the pro
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subjects	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
title	Cyclic modulation method and system of modular multilevel DC converter, and medium
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