The patent titled “A System to Control Dc-Dc Buck Power Converter And A Method Thereof” by research scholar K Mounika Nagabushanam, and Assistant Professors, Dr Somesh Vinayak Tewari, and Dr Tarkeshwar Mahto with application no: 202441098288 presents an innovative approach to managing power conversion in renewable energy systems extending its applications in electric vehicles and microgrids, highlighting the importance of robust power control in advancing sustainable energy technologies.
Abstract
The work disclosed a system to control DC-DC buck power converter and a method thereof. The system comprises a photovoltaic (PV) panel, a first DC-DC buck converter for voltage step-down, and a battery for energy storage. A bidirectional DC-DC converter manages power flow between the battery and the source bus, while a second bidirectional converter exchanges power with the AC grid. The load bus integrates a second DC-DC buck converter to regulate power for constant power loads and resistive loads. Switching components like IGBTs controlled through PWM signals, ensure precise power control. Inductive and capacitive elements stabilize voltage, filter ripples, and reduce noise. The system supports adaptive power distribution and robust load handling, ensuring efficient energy management.
Explanation in layperson’s terms
Passivity-based control (PBC) is a control technique applied to buck converters within renewable energy systems to maintain stability and efficiency despite varying input conditions. Buck converters are essential for stepping down fluctuating voltage outputs from renewable sources, such as solar panels, to a consistent level suitable for storage or direct use. In solar power systems, PBC is used to manage the voltage conversion from solar panels to batteries or the grid. It stabilizes the voltage output, ensuring efficient battery charging and smooth integration with the electrical grid. PBC’s application in renewable energy systems demonstrates its critical role in advancing sustainable energy technologies, providing a reliable and efficient power supply.
Practical and Social Implications
The proposed control can be used in Electric Vehicle, Microgrid applications to stabilize voltage under load variations.
Future research plans
Future research plan is to work on the testing of proposed control with high level DC-DC converters
