Design of a Modified-Bridge Circuit with a Master-Slave Input Supply Mechanism for Ozone-Driven System Applications

Te-Chun Hung,Tsong-Shing Lee,Yu-Hsiang Chen,Kuan-Chieh Huang

doi:10.3390/electronics11020254

Te-Chun Hung, Tsong-Shing Lee + Show 2 more

Open Access

https://doi.org/10.3390/electronics11020254

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Abstract

This study proposes a design of a modified-bridge circuit with a master–slave input supply mechanism for ozone-driven system applications. Because the single-source supply design is becoming the mainstream choice in the existing ozone-driven systems, the input supply reliability of the ozone-driven system is crucial. Therefore, this proposed design involves a modified-bridge circuit combined with inductors and transistors, which can be augmented with the energy storage device as a backup source to improve the reliability of the input supply for the ozone-driven system. In addition, considering that the original source directly connected to DC BUS can re-charge the energy storage device, the energy recycling operation mode is designed in this proposed system to extend the duration of the energy storage device, which improves the supply reliability of the ozone-driven system further. To validate this proposed system, both model formulation and hardware realization are assessed through different test scenarios. Experimental outcomes of these tests confirm the practicality of the proposed design.

Highlights

Ozone technologies have seen wide application in various fields, such as agriculture, sterilization [1,2,3], water purification [4,5,6], portable air cleaners [7,8], and surface cleaning [9,10]
If a fault occurs in the power source during operation, the ozone-driven system must stop working and wait for power recovery, which significantly affects the ozone quality
Adopting designs using a single power source inevitably impairs the operational reliability of the ozone-driven system in the above application fields

Summary

Introduction

Ozone technologies have seen wide application in various fields, such as agriculture, sterilization [1,2,3], water purification [4,5,6], portable air cleaners [7,8], and surface cleaning [9,10]. An isolated converter with a bi-directional power transmission is proposed for a two-power-source input and power control in [22] These studies have discussed the interleaved buck/boost converter with zero-voltage switching control for some bi-directional converter designs [23,24]. (1) The proposed modified-bridge circuit accomplished in this paper emphasizes the benefits of using two input power sources that are supplying coordinately to improve the supplied reliability and reduce the component cost for the ozone-driven system. A multiple-input configuration of an isolated bidirectional dual-active bridge dc-dc converter (MIBDC) is proposed for power flow control in a combinational battery storage. The variable coupled inductor significantly improves the soft-switching range and re-charging of energy regulation reduces the circulating energy.The gallium nitride interleaved bi-directional buck-boost converter is applied in this paper. Asymmetric parameters methodology (APM) can design gain curves for charging and discharging modes separately

Operations of the Proposed System

System and Circuit Description

Operation Mode and Circuit Analysis

The Energy Is Provided from DC BUS

Operation Mode Change Verification

Conclusions