Design and Analysis of a 75 kW Five-Phase Two-Switch Buck–Boost Converter for Photovoltaic Systems

Marcin Zygmanowski; Dawid Mańka; Jan Strossa

doi:10.3390/electronics15132827

Design and Analysis of a 75 kW Five-Phase Two-Switch Buck–Boost Converter for Photovoltaic Systems

Marcin Zygmanowski
, Dawid Mańka
, Jan Strossa

Department of Power Electronics, Electrical Drives and Robotics (RE/RE5)

Enel-PC Sp. z o.o.
VŠB – Technical University of Ostrava

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

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 V_in–V_out 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.

Original language	English
Article number	2827
Journal	Electronics (Switzerland)
Volume	15
Issue number	13
DOIs	https://doi.org/10.3390/electronics15132827
Publication status	Published - Jul 2026

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

efficiency measurements
multi-phase DC–DC converter
photovoltaic systems
two-switch buck–boost converter

ASJC Scopus subject areas

Control and Systems Engineering
Signal Processing
Hardware and Architecture
Computer Networks and Communications
Electrical and Electronic Engineering

Access to Document

10.3390/electronics15132827

Cite this

@article{b5fb7a3a20cf420abedeff4a60179e94,

title = "Design and Analysis of a 75 kW Five-Phase Two-Switch Buck{\textendash}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{\textendash}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.",

keywords = "efficiency measurements, multi-phase DC{\textendash}DC converter, photovoltaic systems, two-switch buck{\textendash}boost converter",

author = "Marcin Zygmanowski and Dawid Ma{\'n}ka and Jan Strossa",

note = "Publisher Copyright: {\textcopyright} 2026 by the authors.",

year = "2026",

month = jul,

doi = "10.3390/electronics15132827",

language = "English",

volume = "15",

journal = "Electronics (Switzerland)",

issn = "2079-9292",

publisher = "Multidisciplinary Digital Publishing Institute (MDPI)",

number = "13",

}

TY - JOUR

T1 - Design and Analysis of a 75 kW Five-Phase Two-Switch Buck–Boost Converter for Photovoltaic Systems

AU - Zygmanowski, Marcin

AU - Mańka, Dawid

AU - Strossa, Jan

PY - 2026/7

Y1 - 2026/7

N2 - 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.

AB - 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.

KW - efficiency measurements

KW - multi-phase DC–DC converter

KW - photovoltaic systems

KW - two-switch buck–boost converter

UR - https://www.scopus.com/pages/publications/105044575302

U2 - 10.3390/electronics15132827

DO - 10.3390/electronics15132827

M3 - Article

AN - SCOPUS:105044575302

SN - 2079-9292

VL - 15

JO - Electronics (Switzerland)

JF - Electronics (Switzerland)

IS - 13

M1 - 2827

ER -

Design and Analysis of a 75 kW Five-Phase Two-Switch Buck–Boost Converter for Photovoltaic Systems

Abstract

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this