Power Conversion System and Control Strategy for Environmental Radiation Monitoring System with High Effciency and High Reliability

This paper presents a power conversion system for an environmental radiation monitoring system (ERMS) with high efficiency and high reliability. To enhance the system reliability, the proposed configuration for ERMS has three power sources, and the power conversion system is responsible for the interface with ERMS and the sources. The proposed power conversion system is designed to have high efficiency characteristics by minimizing the number of the power conversion process, and its circuit structure is designed to be suitable for small power application such as the ERMS. So the proposed power conversion system consists of a bidirectional flyback converter capable of a single power conversion and a buck converter with maximum power point tracking (MPPT) function. To ensure the feasibility of the proposed conversion system, the optimized control strategy is introduced. Finally, for the proposed power conversion system, a prototype was built, and its performance and validity were evaluated based on the experimental results.