Design and Analysis of a 75 kW Five-Phase Two-Switch Buck–Boost Converter for Photovoltaic Systems
Abstract
This paper presents a five-phase, two-switch buck-boost (5P-TSBB) converter rated at 75 kW, intended for photovoltaic and energy storage applications that require a wide operating voltage range. The proposed system operates with photovoltaic input voltages ranging from 250 V to 1000 V and regulates the DC-link voltage between 600 V and 950 V. The converter supports two distinct operating modes: an independent multi-input mode for multiple independent input sources and an interleaved mode for a single high-power input. The feasible operating area of the converter is determined in the Vin–Vout plane, taking into account voltage, current, and power limitations. Simulation results and experimental investigations on a laboratory prototype, including measurements of efficiency and power losses, support the theoretical considerations.
Fields of Study & Subjects
Advanced DC-DC Converters
Multilevel Inverters and Converters
Photovoltaic System Optimization Techniques
Publication details
- Journal / source
- Electronics
- Publisher
- MDPI AG
- Volume
- 15
- Issue
- 13
- Pages
- 2827–2827
- Publication date
- 27 June 2026
- Language
- EN