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Design of modified reference phase modulation based boost chopper fed fifteen level stepped DC link hybrid converter
R Uthirasamy1, S Vishnu Kumar2, Christo Ananth3
1Department of Electrical and Electronics Engineering, Mahendra Engineering College, Namakkal, 637503, India.
Scientific Reports
|February 1, 2024
Summary
A novel hybrid converter enhances solar power for electric vehicle motors. This system reduces power loss and components, improving efficiency and reliability in Brushless DC Motor drives.
Area of Science:
- Electrical Engineering
- Renewable Energy Systems
- Power Electronics
Background:
- Solar Photovoltaic (SPV) systems require efficient power conversion for applications like Electric Vehicles (EVs).
- Existing multilevel hybrid converters face challenges with component count, power loss, and harmonic distortion.
Purpose of the Study:
- To propose a new fifteen-level stepped DC to AC hybrid converter for SPV applications.
- To integrate this converter with a boost chopper for Brushless DC Motor (BLDC) drives in EVs.
- To enhance power quality and system reliability while reducing losses and component count.
Main Methods:
- Design and interface of a boost chopper circuit with a fifteen-level hybrid converter.
- Implementation of series-operated DC-link modules for achieving fifteen-level DC-link voltage.
- Utilizing dsPIC digital-controller-based gate triggering circuits for harmonic mitigation.
Main Results:
- Achieved a fifteen-level DC-link voltage with reduced electrical energy compression.
- Demonstrated minimum switching and power loss due to the elimination of end passive components.
- Reported a 7% reduction in harmonics and a 54% reduction in controlled power switches compared to existing topologies.
Conclusions:
- The proposed hybrid converter topology offers improved efficiency and reliability for SPV-fed BLDC drives.
- Elimination of passive components and reduction in semiconductor switches simplify the system and enhance its performance.
- The digital controller effectively mitigates power quality issues, making the system suitable for EV applications.
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