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Amit Pandhare,
Aditya Kumbhar,
- Student, Department of Electronics and Telecommunication Engineering, SKN Sinhgad College of Engineering, Pandharpur, Maharashtra, India
- Assistant Professor, Department of Electronics and Telecommunication Engineering, SKN Sinhgad College of Engineering, Pandharpur, Maharashtra, India
Abstract
The rapid proliferation of electric vehicles (EVs) has intensified the demand for advanced charging infrastructure capable of delivering reliable, efficient, and grid-aware power management. Conventional unidirectional chargers are inadequate for modern smart-grid applications, as they preclude the utilization of stored battery energy for grid support functions. This paper presents the design, mathematical modeling, and simulation-based validation of a non-isolated bidirectional DC–DC buck–boost converter rated at 20 kW for EV charging station integration. The proposed converter operates on a 700 V DC bus and interfaces with a 50 kWh lithium-ion (Li-ion) EV battery pack having a nominal voltage of 400 V (range: 320–450 V). A dual-loop control architecture comprising an outer voltage regulation loop and an inner current tracking loop is implemented, with proportional-integral (PI) controllers designed via frequency-domain methods to guarantee closed-loop stability. The converter supports bidirectional power flow, enabling both Grid-to-Vehicle (G2V) charging and Vehicle-to-Grid (V2G) discharging modes. Simulation results obtained in MATLAB/Simulink (Simscape Electrical) demonstrate a peak power conversion efficiency of 96.2% at rated load, battery current settling time below 18 ms, and DC bus voltage regulation within ±1.5% under step-load perturbations. Grid support capabilities including peak shaving, load leveling, and reactive power assistance are analyzed and discussed. The proposed system exhibits stable mode transitions with minimal transient overshoot, confirming its suitability for practical smart EV charging station deployment.
Keywords: Bidirectional DC–DC converter; EV charging; V2G; Grid support; Power electronics; Dual-loop control.
Amit Pandhare, Aditya Kumbhar. Bidirectional DC–DC Converter Design and Control for EV Charging Stations with Grid Support Capability. International Journal of Power Electronics Controllers and Converters. 2026; 12(01):-.
Amit Pandhare, Aditya Kumbhar. Bidirectional DC–DC Converter Design and Control for EV Charging Stations with Grid Support Capability. International Journal of Power Electronics Controllers and Converters. 2026; 12(01):-. Available from: https://journals.stmjournals.com/ijpecc/article=2026/view=240147
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| Volume | 12 |
| 01 | |
| Received | 07/03/2026 |
| Accepted | 11/03/2026 |
| Published | 16/04/2026 |
| Publication Time | 40 Days |
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