Design and Implementation of Z-Source Inverter by Simple Boost Control Technique for Laboratory Scale Micro-Hydro Power Plant Application

Rizki Mendung Ariefianto,Rizky Ajie Aprilianto,Suwito Suwito,Heri Suryoatmojo

doi:10.15294/jte.v13i2.31884

Rizki Mendung Ariefianto, Rizky Ajie Aprilianto + Show 2 more

Open Access

https://doi.org/10.15294/jte.v13i2.31884

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Abstract

In a power plant such as micro-hydropower (MHP), an induction generator (IG) is usually employed to produce electrical power. Therefore, an inverter is needed to deliver it with high efficiency. Z-source inverter (ZSI) has been introduced as a topology with many advantages over conventional inverters. This research aims to investigate the performance of ZSI based simple boost control (SBC) in laboratory-scale MHP systems using a rewinding induction generator. This research has been conducted both from simulations and experiments. Based on the result, the waveform characteristic and value of ZSI are close to the desired design. A shoot-through duty ratio of 17% can reach 60 Vrms output voltage, and this condition has a conversion ratio of about 2.05 times. Also, SBC can significantly reduce the Total Harmonic Distortion (THD). ZSI efficiency has a value of 84.78% at 50% of rating load 100 W and an average value of 80%. Compared to the previous study, the proposed design has more economical with the same component for the higher rating power. Moreover, it has a smoother and entire output waveform of the voltage.

Highlights

Electricity generation based on fossil energy alone is appraised as inadequate for the growth of demand energy capacity
This paper aims to design and implement a Z-source inverter (ZSI) topology controlled by a simple boost strategy
This paper proposes a laboratory-scale MHP system with

Summary

Introduction

Electricity generation based on fossil energy alone is appraised as inadequate for the growth of demand energy capacity. The utilization of fossil energy adversely affects the increase of environmental pollution and the greenhouse effect. This problem encourages many researchers to utilize renewable energy resources more and promote nonemission electricity for better human social development. Among all renewable energy resources, micro-hydropower (MHP) is considered the most favorable energy source, which has an efficient, clean, and uncomplicated technology [4]. This power generation technology deserves to implement in remote areas with intricate geographical contours, such as mountainous areas

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