In this paper Embedded based Z-source multilevel inverter (ZSMLI) is proposed. This work implements a five level cascaded H-bridge Z-source inverter by using embedded control. Switching devices are triggered using embedded controller. In this controller coding is described by using switching
Keywords: Z-source multilevel inverter, embedded controller, RMS, THD, DC componentCopyright © 2017 Institute of Advanced Engineering and Science. All rights reserved.
IntroductionTo overcome the limitations of traditional multilevel inverter, in this paper Z-source multilevel inverter is proposed. It comprised by Z-source network and multilevel inverter topology. Multilevel inverter has a unique structure they are specially suited for applications which need low THD. Multilevel inverter is a power electronic device built to synthesize a desired AC output voltage from several DC voltage sources. Multilevel inverter not only can generate the output voltage with very low distortion, but also can reduces the the Electromagnetic Compatibility Problems (EMC). Proper selection of pulses in the Z-source MLI can limit the THD in the output voltage.Cascaded multilevel inverters have been developed for electric utility applications. This paper provides features and control schems of the cascaded multilevel inverter for utility applications including renewable energy, VAR compensation, voltage regulation and harmonic filtering in power systems [1]. The Z source inverter can overcome the limitations of both VSI and CSI. It reduces line harmonics, improves power factor and high reliability [2]. The method of triangular carrier switching control of two level inverters is extended for the cascaded multilevel inverter controlled systems [3]. This paper presents a survey of different topologies, control strategies and modulation techniques of cascaded multilevel inverter [4]. The performance of Zsource multilevel inverter have been analysed and simulation results are presented using MATLAB/SIMULINK. The output voltage can be boosted with Z-network shoot through state control [5].Z-source seven level diode clamped inverter for photovoltaic applications have been presented. Higher output voltage is obtained through its Z-source network [6]. The system configuration and operating principle of voltage source inverter fed STATCOM system have been presented [7]. The performance of the multilevel inverter controlled by using the embedded controller.These proposed topologies producing the high quality output which is nearer to the sinusoidal waves [8].The proposed cascaded multilevel inverter is controlled by using digital and embedded controller. It used to reduce the total harmonic distortion (THD) in the output voltage [9]. To boost the voltage there are many maximum power points tracking (MPPT) methods are introduced [10]. To overcome the limitations of conventional Z-source inverter, the performance analysis of Z-source multilevel inverter have been presented using three level NPC inverter [11]. Isolated and non-isolated dc-power suppl...
