Non-Isolated n-Stage High Step-up DC-DC Converter for Low Voltage DC Source Integration

The dc-dc converters with high step-up DC-voltage gain play a vital role in integrating low voltage DC sources. Though several converter topologies are reported in the recent past, attempts have been made to reduce the components, especially the switching devices, passive elements, converter losses,...

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Published inIEEE transactions on energy conversion Vol. 36; no. 3; pp. 1625 - 1634
Main Authors Shanthi, T., Prabha, S. U., Sundaramoorthy, Kumaravel
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Capacitors
DC-DC converter
DC-DC power converters
Energy conversion efficiency
high DC voltage gain
Inductors
Low voltage
Network topologies
non-isolated
Semiconductor devices
Semiconductor diodes
solar PV
Stress
switched inductor
Switches
Topology
transformerless
Voltage converters (DC to DC)
Voltage gain
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Abstract The dc-dc converters with high step-up DC-voltage gain play a vital role in integrating low voltage DC sources. Though several converter topologies are reported in the recent past, attempts have been made to reduce the components, especially the switching devices, passive elements, converter losses, etc., of the converter. A novel DC-DC converter topology, viz., single switched impedance network (SSIN)-based converter with n -stage is proposed in this paper. The operation of the SSIN based converter in continuous and discontinuous conduction modes are discussed. The effect of parasitic elements on DC-voltage gain and efficiency of the SSIN is carried out. The small-signal model of the SSIN converter is derived. The performance of the SSIN converter is compared with the similar converter topologies. The 500 W prototypes of the SSIN with n = 1 and n = 2 are fabricated, and the experimental results are presented in this paper. To improve the converter performance, SiC-based semiconductor devices are used. The SSIN converter with two-stage has low switch loss at 500 W load, improved efficiency during high power and high output voltage operation, the switch stress of V o /2, etc.
AbstractList The dc-dc converters with high step-up DC-voltage gain play a vital role in integrating low voltage DC sources. Though several converter topologies are reported in the recent past, attempts have been made to reduce the components, especially the switching devices, passive elements, converter losses, etc., of the converter. A novel DC-DC converter topology, viz., single switched impedance network (SSIN)-based converter with n -stage is proposed in this paper. The operation of the SSIN based converter in continuous and discontinuous conduction modes are discussed. The effect of parasitic elements on DC-voltage gain and efficiency of the SSIN is carried out. The small-signal model of the SSIN converter is derived. The performance of the SSIN converter is compared with the similar converter topologies. The 500 W prototypes of the SSIN with n = 1 and n = 2 are fabricated, and the experimental results are presented in this paper. To improve the converter performance, SiC-based semiconductor devices are used. The SSIN converter with two-stage has low switch loss at 500 W load, improved efficiency during high power and high output voltage operation, the switch stress of Vo /2, etc.
The dc-dc converters with high step-up DC-voltage gain play a vital role in integrating low voltage DC sources. Though several converter topologies are reported in the recent past, attempts have been made to reduce the components, especially the switching devices, passive elements, converter losses, etc., of the converter. A novel DC-DC converter topology, viz., single switched impedance network (SSIN)-based converter with n -stage is proposed in this paper. The operation of the SSIN based converter in continuous and discontinuous conduction modes are discussed. The effect of parasitic elements on DC-voltage gain and efficiency of the SSIN is carried out. The small-signal model of the SSIN converter is derived. The performance of the SSIN converter is compared with the similar converter topologies. The 500 W prototypes of the SSIN with n = 1 and n = 2 are fabricated, and the experimental results are presented in this paper. To improve the converter performance, SiC-based semiconductor devices are used. The SSIN converter with two-stage has low switch loss at 500 W load, improved efficiency during high power and high output voltage operation, the switch stress of V o /2, etc.
Author Sundaramoorthy, Kumaravel
Prabha, S. U.
Shanthi, T.
Author_xml – sequence: 1
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  surname: Shanthi
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  givenname: S. U.
  surname: Prabha
  fullname: Prabha, S. U.
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  givenname: Kumaravel
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  surname: Sundaramoorthy
  fullname: Sundaramoorthy, Kumaravel
  email: kumaravel_s@nitc.ac.in
  organization: Electrical Engineering, National Institute of Technology Calicut, Calicut, Kerala, India
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Snippet The dc-dc converters with high step-up DC-voltage gain play a vital role in integrating low voltage DC sources. Though several converter topologies are...
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SubjectTerms Capacitors
DC-DC converter
DC-DC power converters
Energy conversion efficiency
high DC voltage gain
Inductors
Low voltage
Network topologies
non-isolated
Semiconductor devices
Semiconductor diodes
solar PV
Stress
switched inductor
Switches
Topology
transformerless
Voltage converters (DC to DC)
Voltage gain
Title Non-Isolated n-Stage High Step-up DC-DC Converter for Low Voltage DC Source Integration
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