Document Type : Research article
Authors
Department of Electrical Engineering, Faculty of Engineering, Ayatollah Boroujerdi University, Boroujerd, Iran
Abstract
In this paper a new improved diode-based circuit is introduced for output voltage limiting of immittance-based constant current Load Resonant Converters (LRCs). The proposed Diode-based Voltage-Limiter (DVL) is very reliable and simple, and also has minimum number of components. Moreover, limiting values are flexible and can be varied according to the design requirements. All of the positive characteristics of the LRC operation are preserved in this technique such as Zero Voltage Switching (ZVS) of the inverter switches and Zero Current Switching (ZCS) of the rectifier diodes. A 150W converter with 300kHz switching frequency is considered as a sample prototype. The circuit simulation is presented based on the real model of the semiconductor devices in the OrCAD environments to have maximum accordance with the real conditions. Simulation results demonstrate an accurate clamping ability of the output voltage for overload conditions without any characteristics variation.
Highlights
- It has high flexibility in variation of the border of the clamping
- The proposed structure has a minimum number of components increment
- The characteristics of the LRC are preserved in case of utilizing Diode-based Voltage-Limiter (DVL) circuit.
- Simulation results demonstrate an accurate clamping ability of the output voltage.
Keywords
- Diode-based Voltage-Limiter (DVL)
- Immittance Passive Resonant Tank (IPRT)
- Load Resonant Converter (LRC)
Main Subjects
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