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67427

PERFORMANCE OF CASCADED H-BRIDGE INVERTER INTEGRATED WITH HFT FOR PV SYSTEM APPLICATIONS

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Last updated: 25 Dec 2024

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Abstract

This paper presents a photovoltaic system as a standalone system. The proposed system
consists of photovoltaic (PV) module, battery energy storage system (BESS), high frequency
transformer, and multilevel inverter (MLI). The MLI consists of two H-bridge single phase inverter
per arm (phase) with unequal dc voltages which needs 6 isolated de sources for the conventional
MLI. The relative values between the upper (auxiliary) inverter dc voltage and the lower H-bridge
(main) inverter is 1/3 resulting in 9 levels MLI. Each isolated dc source comes from a PV module
accompany with a BESS. A high frequency transformer (HFT) is proposed in this paper to generate
the dc bus voltage of the auxiliary inverter from the main inverter dc bus voltage. As a result of that
the number of isolated dc bus voltages required is reduced by half which is reflected in reducing the
number of PV required and thus reducing the cost of the overall system. In addition, a natural
balancing between the main and auxiliary inverters dc bus voltages of each arm will be attained due
to the HFT turns ratio which result in simplifying the overall control of the whole system. In order to
reduce the size of the HFT a judicious modulation index (MI) will be chosen. The proposed system
has been simulated using static inductive load. Analyses and simulation have been proposed to
validate the proposed control scheme.

DOI

10.21608/erjm.2013.67427

Keywords

MLI, PV, HF Transformer, bidirectional converter, Isolated dc sources

Authors

First Name

Mahrous

Last Name

Ahmed

MiddleName

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Affiliation

Aswan Faculty of Engineering, Aswan university, Aswan, Egypt

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Orcid

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First Name

i.

Last Name

Taha

MiddleName

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Affiliation

Tanta University, Faculty of engineering, Tanta, Egypt

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Volume

36

Article Issue

3

Related Issue

10112

Issue Date

2013-07-01

Receive Date

2020-01-04

Publish Date

2013-07-01

Page Start

225

Page End

231

Print ISSN

1110-1180

Online ISSN

3009-6944

Link

https://erjm.journals.ekb.eg/article_67427.html

Detail API

https://erjm.journals.ekb.eg/service?article_code=67427

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3

Type

Original Article

Type Code

1,118

Publication Type

Journal

Publication Title

ERJ. Engineering Research Journal

Publication Link

https://erjm.journals.ekb.eg/

MainTitle

PERFORMANCE OF CASCADED H-BRIDGE INVERTER INTEGRATED WITH HFT FOR PV SYSTEM APPLICATIONS

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Article

Created At

22 Jan 2023