Switching Loss Reduction in the Three-Phase Quasi-Z-Source Inverters Utilizing Modified Space Vector Modulation Strategies

Ahmed Abdelhakim, Pooya Davari, Frede Blaabjerg, Paolo Mattavelli

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19 Citations (Scopus)
86 Downloads (Pure)

Abstract

Several single-stage topologies have been introduced since kicking off the three-phase Z-source inverter (ZSI), and among these topologies, the quasi-ZSI (qZSI) is the most common one due to its simple structure and continuous input current. Furthermore, different modulation strategies, utilizing multiple reference signals, have been developed as well. However, prior art modulation methods have some demerits, such as the complexity of generating the gate signals, the increased number of switch commutations with continuous commutation at high current level during the entire fundamental cycle, and the multiple commutations at a time. Hence, this paper proposes two modified space vector (MSV) modulation strategies, aimed at the reduction of the qZSI number of switch commutations at high current level for shorter periods during the fundamental cycle, i.e. reducing the switching loss, simplifying the generation of the gate signals by utilizing only three reference signals, and achieving a single switch commutation at a time. These modulation strategies are analyzed and compared to the conventional ones, where a reduced-scale 1 kVA three-phase qZSI is designed and simulated using these different modulation strategies. Finally, the 1 kVA three-phase qZSI is implemented experimentally to validate the performance of the proposed modulation strategies and verify the reported analysis.
Original languageEnglish
JournalI E E E Transactions on Power Electronics
Volume33
Issue number5
Pages (from-to)4045-4060
Number of pages6
ISSN0885-8993
DOIs
Publication statusPublished - May 2018

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Vector spaces
Electric commutation
Modulation
Switches
Topology

Keywords

  • Constant-boost
  • Discontinuous modulation
  • Highboost
  • Impedance-based inverter
  • Maximum-boost
  • Modulation
  • Pulse width modulation (PWM)
  • Quasi-Z-source inverter (qZSI)
  • Shoot-through
  • Simple-boost
  • Space vector
  • Switching losses
  • Zsource inverter (ZSI)

Cite this

@article{1c4752767ee64bc580ddae01b3db406d,
title = "Switching Loss Reduction in the Three-Phase Quasi-Z-Source Inverters Utilizing Modified Space Vector Modulation Strategies",
abstract = "Several single-stage topologies have been introduced since kicking off the three-phase Z-source inverter (ZSI), and among these topologies, the quasi-ZSI (qZSI) is the most common one due to its simple structure and continuous input current. Furthermore, different modulation strategies, utilizing multiple reference signals, have been developed as well. However, prior art modulation methods have some demerits, such as the complexity of generating the gate signals, the increased number of switch commutations with continuous commutation at high current level during the entire fundamental cycle, and the multiple commutations at a time. Hence, this paper proposes two modified space vector (MSV) modulation strategies, aimed at the reduction of the qZSI number of switch commutations at high current level for shorter periods during the fundamental cycle, i.e. reducing the switching loss, simplifying the generation of the gate signals by utilizing only three reference signals, and achieving a single switch commutation at a time. These modulation strategies are analyzed and compared to the conventional ones, where a reduced-scale 1 kVA three-phase qZSI is designed and simulated using these different modulation strategies. Finally, the 1 kVA three-phase qZSI is implemented experimentally to validate the performance of the proposed modulation strategies and verify the reported analysis.",
keywords = "Constant-boost, Discontinuous modulation, Highboost, Impedance-based inverter, Maximum-boost, Modulation, Pulse width modulation (PWM), Quasi-Z-source inverter (qZSI), Shoot-through, Simple-boost, Space vector, Switching losses, Zsource inverter (ZSI)",
author = "Ahmed Abdelhakim and Pooya Davari and Frede Blaabjerg and Paolo Mattavelli",
year = "2018",
month = "5",
doi = "10.1109/TPEL.2017.2721402",
language = "English",
volume = "33",
pages = "4045--4060",
journal = "I E E E Transactions on Power Electronics",
issn = "0885-8993",
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}

Switching Loss Reduction in the Three-Phase Quasi-Z-Source Inverters Utilizing Modified Space Vector Modulation Strategies. / Abdelhakim, Ahmed; Davari, Pooya; Blaabjerg, Frede; Mattavelli, Paolo.

In: I E E E Transactions on Power Electronics, Vol. 33, No. 5, 05.2018, p. 4045-4060.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Switching Loss Reduction in the Three-Phase Quasi-Z-Source Inverters Utilizing Modified Space Vector Modulation Strategies

AU - Abdelhakim, Ahmed

AU - Davari, Pooya

AU - Blaabjerg, Frede

AU - Mattavelli, Paolo

PY - 2018/5

Y1 - 2018/5

N2 - Several single-stage topologies have been introduced since kicking off the three-phase Z-source inverter (ZSI), and among these topologies, the quasi-ZSI (qZSI) is the most common one due to its simple structure and continuous input current. Furthermore, different modulation strategies, utilizing multiple reference signals, have been developed as well. However, prior art modulation methods have some demerits, such as the complexity of generating the gate signals, the increased number of switch commutations with continuous commutation at high current level during the entire fundamental cycle, and the multiple commutations at a time. Hence, this paper proposes two modified space vector (MSV) modulation strategies, aimed at the reduction of the qZSI number of switch commutations at high current level for shorter periods during the fundamental cycle, i.e. reducing the switching loss, simplifying the generation of the gate signals by utilizing only three reference signals, and achieving a single switch commutation at a time. These modulation strategies are analyzed and compared to the conventional ones, where a reduced-scale 1 kVA three-phase qZSI is designed and simulated using these different modulation strategies. Finally, the 1 kVA three-phase qZSI is implemented experimentally to validate the performance of the proposed modulation strategies and verify the reported analysis.

AB - Several single-stage topologies have been introduced since kicking off the three-phase Z-source inverter (ZSI), and among these topologies, the quasi-ZSI (qZSI) is the most common one due to its simple structure and continuous input current. Furthermore, different modulation strategies, utilizing multiple reference signals, have been developed as well. However, prior art modulation methods have some demerits, such as the complexity of generating the gate signals, the increased number of switch commutations with continuous commutation at high current level during the entire fundamental cycle, and the multiple commutations at a time. Hence, this paper proposes two modified space vector (MSV) modulation strategies, aimed at the reduction of the qZSI number of switch commutations at high current level for shorter periods during the fundamental cycle, i.e. reducing the switching loss, simplifying the generation of the gate signals by utilizing only three reference signals, and achieving a single switch commutation at a time. These modulation strategies are analyzed and compared to the conventional ones, where a reduced-scale 1 kVA three-phase qZSI is designed and simulated using these different modulation strategies. Finally, the 1 kVA three-phase qZSI is implemented experimentally to validate the performance of the proposed modulation strategies and verify the reported analysis.

KW - Constant-boost

KW - Discontinuous modulation

KW - Highboost

KW - Impedance-based inverter

KW - Maximum-boost

KW - Modulation

KW - Pulse width modulation (PWM)

KW - Quasi-Z-source inverter (qZSI)

KW - Shoot-through

KW - Simple-boost

KW - Space vector

KW - Switching losses

KW - Zsource inverter (ZSI)

U2 - 10.1109/TPEL.2017.2721402

DO - 10.1109/TPEL.2017.2721402

M3 - Journal article

VL - 33

SP - 4045

EP - 4060

JO - I E E E Transactions on Power Electronics

JF - I E E E Transactions on Power Electronics

SN - 0885-8993

IS - 5

ER -