A new step-up switched-capacitor voltage balancing converter for NPC multilevel inverter-based solar PV system

Amir Taghvaie; Md Enamul Haque; Sajeeb Saha; Md Apel Mahmud

doi:10.1109/ACCESS.2020.2992093

A new step-up switched-capacitor voltage balancing converter for NPC multilevel inverter-based solar PV system

Amir Taghvaie^*, Md Enamul Haque, Sajeeb Saha, Md Apel Mahmud

^*Corresponding author for this work

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

40 Citations (Scopus)

34 Downloads (Pure)

Abstract

This paper proposed a grid connected solar Photovoltaic (PV) Systems with a new voltage balancing converter suitable for Neutral-Point-Clamped (NPC) Multilevel Inverter (MLI). The switched-capacitors used in the proposed converter is able to balance the DC link capacitor voltage effectively by using proper switching states. The proposed balancing converter can be extended to any higher levels and it can boost the DC input voltage to a higher voltage levels without using any magnetic components. This feature allows the converter to operate with the boosting capability of the input voltage to the desired output voltage while ensuring the self-balancing. In this paper the proposed converter is used for a grid connected solar PV system with NPC multilevel inverter, which is controlled using vector control scheme. The proposed grid connected solar PV system with associated controllers and maximum power point tracking (MPPT) is implemented in Matlab/SimPowerSystem and experimentally validated using dSPACE system and designed converters. The simulation and experimental results show that the proposed topology can effectively balance the DC link voltage, extract maximum power from PV module and inject power to the grid under varying solar irradiances with very good steady state and dynamic performances.

Original language	English
Article number	9085361
Pages (from-to)	83940-83952
Number of pages	13
Journal	IEEE Access
Volume	8
Early online date	13 May 2020
DOIs	https://doi.org/10.1109/ACCESS.2020.2992093
Publication status	Published - 2020
Externally published	Yes

Keywords

balancing circuit
dc-link voltage balancing
grid connected PV system
NPC multilevel inverter
Solar photovoltaics

UN SDGs

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

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10.1109/ACCESS.2020.2992093Licence: CC BY

A_New_Step-Up_Switched-Capacitor_Voltage_Balancing_Converter_for_NPC_Multilevel_Inverter-Based_Solar_PV_SystemFinal published version, 2.63 MBLicence: CC BY

Cite this

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title = "A new step-up switched-capacitor voltage balancing converter for NPC multilevel inverter-based solar PV system",

abstract = "This paper proposed a grid connected solar Photovoltaic (PV) Systems with a new voltage balancing converter suitable for Neutral-Point-Clamped (NPC) Multilevel Inverter (MLI). The switched-capacitors used in the proposed converter is able to balance the DC link capacitor voltage effectively by using proper switching states. The proposed balancing converter can be extended to any higher levels and it can boost the DC input voltage to a higher voltage levels without using any magnetic components. This feature allows the converter to operate with the boosting capability of the input voltage to the desired output voltage while ensuring the self-balancing. In this paper the proposed converter is used for a grid connected solar PV system with NPC multilevel inverter, which is controlled using vector control scheme. The proposed grid connected solar PV system with associated controllers and maximum power point tracking (MPPT) is implemented in Matlab/SimPowerSystem and experimentally validated using dSPACE system and designed converters. The simulation and experimental results show that the proposed topology can effectively balance the DC link voltage, extract maximum power from PV module and inject power to the grid under varying solar irradiances with very good steady state and dynamic performances.",

keywords = "balancing circuit, dc-link voltage balancing, grid connected PV system, NPC multilevel inverter, Solar photovoltaics",

author = "Amir Taghvaie and Haque, {Md Enamul} and Sajeeb Saha and Mahmud, {Md Apel}",

year = "2020",

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AU - Mahmud, Md Apel

PY - 2020

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AB - This paper proposed a grid connected solar Photovoltaic (PV) Systems with a new voltage balancing converter suitable for Neutral-Point-Clamped (NPC) Multilevel Inverter (MLI). The switched-capacitors used in the proposed converter is able to balance the DC link capacitor voltage effectively by using proper switching states. The proposed balancing converter can be extended to any higher levels and it can boost the DC input voltage to a higher voltage levels without using any magnetic components. This feature allows the converter to operate with the boosting capability of the input voltage to the desired output voltage while ensuring the self-balancing. In this paper the proposed converter is used for a grid connected solar PV system with NPC multilevel inverter, which is controlled using vector control scheme. The proposed grid connected solar PV system with associated controllers and maximum power point tracking (MPPT) is implemented in Matlab/SimPowerSystem and experimentally validated using dSPACE system and designed converters. The simulation and experimental results show that the proposed topology can effectively balance the DC link voltage, extract maximum power from PV module and inject power to the grid under varying solar irradiances with very good steady state and dynamic performances.

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KW - dc-link voltage balancing

KW - grid connected PV system

KW - NPC multilevel inverter

KW - Solar photovoltaics

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A new step-up switched-capacitor voltage balancing converter for NPC multilevel inverter-based solar PV system

Abstract

Keywords

UN SDGs

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