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High switching frequency, complex and time-varying topology in high power electronics apparatus bring great difficulties to modeling and algorithm in real-time digital simulation. This paper presents a real-time digital simulator for a plusmn50 MVAr static compensator (STATCOM) using 21-level cascaded converter. The time-domain electromagnetic mathematical model of the 21-level cascaded STATCOM is...
This paper presents a new circuit design of multilevel space vector modulation (SVM) strategy. This strategy is based on the decomposition of the reference voltage, and it is utilized at any number of levels. The proposed algorithm has been realized using field programmable gate array (FPGA) technology. A FPGA XILINX XC2S100 was used for the implementation of the SVM IC. The designed SVM IC was incorporated...
This paper describes the distribution level static compensator (D-STATCOM) of three-phase three-wire distribution system for unbalanced load compensation. First, a novel transformer-isolated multilevel H-bridges inverter is introduced, which is suitable for large unbalanced load compensation. For solution to improve the power quality at the point of common coupling (PCC), the compensation scheme is...
A high power 10 kV IMD (induction motor drives) system supplied by a 6 kV three-level NPC (neutral point clamped) inverter with IGCTs (integrated gate commutated thyristors) in series connection, which applied in water works has been developed and achieved. The designed three-level inverter system includes a 24 pulses rectifier, a diode NPC three-level medium voltage VSI (voltage source inverter)...
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