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首页> 外文期刊>WSEAS Transactions on Circuits and Systems >Improved Design of Three-Level NPC Inverters in Comparison to Two-Level Inverters
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Improved Design of Three-Level NPC Inverters in Comparison to Two-Level Inverters

机译:与两级逆变器相比,三级NPC逆变器的改进设计

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摘要

As voltage source 3-level NPC inverters are suitable for AC drives in average voltage and FACT applications in distribution systems, this report introduces optimized design of 3-level NPC inverter by decreasing inverter losses and costs. At first optimization parameters and application functions of losses are introduced, then by using MATLAM6.5 program and IGBT, diodes, switching frequency and load current typical input parameters [1] are considered then by SPWM switching algorithm in program, optimized RG_(on), RG_(off) and gate voltage for 3-level NPC inverters are calculated for minimizing switching and conduction losses of inverter among all amounts of calculated RG_(on), RG_(off) and gate voltage in comparison to optimized design of 2-level inverters[l]. Then results of NPC optimization are applied for simulation of improved NPC, using SVM switching algorithm as the best method of switching and results are presented.
机译:由于电压源三电平NPC逆变器适用于配电系统中的平均电压和FACT应用中的交流变频器,因此本报告介绍了三电平NPC逆变器的优化设计,可降低逆变器的损耗和成本。首先介绍了损耗的优化参数和应用功能,然后使用MATLAM6.5程序和IGBT,二极管,开关频率和负载电流典型输入参数[1]进行了考虑,然后在程序中通过SPWM开关算法,优化了RG_(on)计算三电平NPC逆变器的RG_(off)和栅极电压,以便与2电平的优化设计相比,在所有计算出的RG_(on),RG_(off)和栅极电压中最小化逆变器的开关损耗和传导损耗逆变器[l]。然后将SPC切换算法作为最佳切换方法,将NPC优化结果应用于改进的NPC的仿真,并给出了结果。

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