Abstract
Power electronics play a fundamental role for electric transportation, renewable energy conversion and many other industrial applications. They have the ability to help achieve high efficiency and performance in power systems. However, traditional inverters such as voltage source and current source inverters present some limitations. Consequently, many research efforts have been focused on developing new power electronics converters suitable for many applications. Compared with the conventional two-stage inverter, Z-source inverter (ZSI) is a single-stage converter with lower design cost and high efficiency. It is a power electronics circuit of which the function is to convert DC input voltage to a symmetrical AC output voltage of desired magnitude and frequency. Recently, ZSIs have been widely used as a replacement for conventional two-stage inverters in the distributed generation systems. Several modifications have been carried out on ZSI to improve its performance and efficiency. This paper reviews the-state-of-art impedance source inverter main topologies and points out their applications for multisource electric vehicles. A concise review of main existing topologies is presented. The basic structural differences, advantages and limitations of each topology are illustrated. From this state-of-the-art review of impedance source inverters, the embedded quasi-Z-source inverter presents one of the promising architectures which can be used in multisource electric vehicles, with better performance and reliability. The utilization of this new topology will open the door to several development axes, with great impact on electric vehicles (EVs).
Highlights
The strong energy demand in our society results from increased consumption and population growth [1]
The results prove that the bidirectional QZSI shows higher efficiency than the conventional solution
Bidirectional Z-source inverter (ZSI), The results demonstrate that the transient and the steady-state performances are comparable for both topologies under the same operating conditions
Summary
The strong energy demand in our society results from increased consumption and population growth [1]. With the objective of solving these problems, a Z-source inverter (ZSI) was firstly proposed by Peng, by coupling an LC impedance network with the DC source, to form a novel source [3] That makes the inverters remaining idle and producing harmonics in output voltage [9] To overcome this problem, DG framework in light of ZSI is proposed [10]. Several modified PWM control techniques for impedance source inverters have been proposed in the literature The objective of these techniques is to obtain simple implementation, a wide range of modulation, less commutation per switching cycle and low device stress.
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