Abstract
This paper proposes a single-phase DC to AC inverter for ESG (electrostatic generators) that may be used in the household’s application. The electrostatic generators were developed a while ago and remained abandoned for a long time. Now, as the modern technology advanced, it’s time to utilize the ESG to power generation. A pulse width modulation (PWM) based high voltage DC to AC inverter is a suitable system for converting the EGS high electrostatic DC voltage into standard 50Hz, 220V(rms) AC. The PWM technique is used to control the inverter switches to create a pulse width modulated bi-phase square wave signal. A lowpass LC filter has been utilized to remove the higher harmonic frequencies and which is capable to reduce the total harmonic distortion (THD) around 3.5%. The proposed model showed the overall system performance in terms of efficiency is 95%. To use ESG, this inverter is an easy and cost-effective electrical device. From the result, it is observed that the output voltage of the proposed inverter is greatly improved compared to the other inverter circuits.
Highlights
In recent years, the power application is growing in numbers due to developments in semiconductor switch technologies
Most of the conventional electrical power generation is based on non-renewable energy sources such as coal, petroleum gas, oil, and nuclear, etc
The main obstacle in ESG is that it produces only high voltage DC, so it is difficult to use in normal works
Summary
The power application is growing in numbers due to developments in semiconductor switch technologies. The main drawbacks of the high voltage systems are high harmonic frequency distortion, low efficiency and high switching loss. A pure sine wave is used high voltage application because it can be generated high power, high efficiency and low harmonic frequency distortion to compare other methods. The control method of PWM inverter offers some significance electronic devices such as power loss in the switching, harmonics reduction, generate an AC voltage of variable magnitude as well as different frequency [3]. Whatever the topology of the inverters, a PWM system is widely used to generate the sinusoidal wave, to improve the power quality and to minimize frequency harmonic distortion [5]. Two levels PWM technique has been used to control the IGBT gate to reduce the switching losses and harmonic distortion. A microcontroller has been used to generate the gate driving pulses, which makes the controller more flexible and reliable
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