A New Structure of Multilevel Inverter with Reduced Number of Switches for Electric Vehicle Applications
A New Structure of Multilevel Inverter with Reduced Number of Switches for Electric Vehicle Applications作者机构：不详
出 版 物：《Energy and Power Engineering》 (能源与动力工程（英文）)
年 卷 期：2011年第3卷第2期
页 面：198-205页
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
主 题：Cascaded H-Bridge Electric Vehicles (EVs) Hybrid Modulation Inverters Traction Motors
摘 要：Both Hybrid Electric Vehicles (HEVs) and Electric Vehicles (EVs) need a traction motor and a power in-verter to drive the traction motor. The requirements for the power inverter include high peak power, opti-mum consumption of energy, low output harmonics and inexpensive circuit. In this paper, a new structure of multilevel inverter with reduced number of switches is proposed for electric vehicle applications. It consists of an H-bridge and an inverter in each phase which produces multilevel voltage by switching the dc voltage sources in series. As the number of switches are reduced, both conduction and switching losses will be de-creased, which leads to increase the efficiency of converter. The size and power consumption of driving cir-cuits are also reduced. The proposed three phase inverter can produces more number of voltage levels in the same number of the voltage source and reduced number of switches compared to the conventional inverters. This structure minimizes the total harmonic distortion (THD) of the output voltage waveforms. The structure of proposed multilevel inverter, modulation method, switching losses, THD calculation and simulation re-sults with PSCAD/EMTDC software are shown in this paper.
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