Circuit for clamping bridge over-voltages in a voltage-fed quasi Z-source converter

J. Kitson; N. McNeill

doi:10.1049/el.2015.4164

Circuit for clamping bridge over-voltages in a voltage-fed quasi Z-source converter

J. Kitson, N. McNeill

Electronic And Electrical Engineering

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

3 Citations (Scopus)

45 Downloads (Pure)

Abstract

Unlike the voltage source converter, the Z-source converter can boost as well as buck the input voltage. However, the presence of physically large components in the impedance network introduces large parasitic inductances into power device commutation paths. This leads to consequent overvoltages at power device turn-off. A simple circuit for addressing this is presented. Practical results are given for a voltage-fed quasi- Z-source inverter with discontinuous input current.

Original language	English
Pages (from-to)	551-553
Number of pages	3
Journal	Electronics Letters
Volume	52
Issue number	7
Early online date	3 Mar 2016
DOIs	https://doi.org/10.1049/el.2015.4164
Publication status	Published - 1 Apr 2016

Keywords

power convertors
bridge circuits
impedance network
bridge overload clamping
discontinuous input current

Access to Document

10.1049/el.2015.4164Licence: CC BY 3.0

Kitson-McNeil-EL2016-Circuit-for-clamping-bridge-over-voltages-in-a-voltage-fed-quasi-ZFinal published version, 681 KBLicence: CC BY 3.0

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Cite this

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N2 - Unlike the voltage source converter, the Z-source converter can boost as well as buck the input voltage. However, the presence of physically large components in the impedance network introduces large parasitic inductances into power device commutation paths. This leads to consequent overvoltages at power device turn-off. A simple circuit for addressing this is presented. Practical results are given for a voltage-fed quasi- Z-source inverter with discontinuous input current.

AB - Unlike the voltage source converter, the Z-source converter can boost as well as buck the input voltage. However, the presence of physically large components in the impedance network introduces large parasitic inductances into power device commutation paths. This leads to consequent overvoltages at power device turn-off. A simple circuit for addressing this is presented. Practical results are given for a voltage-fed quasi- Z-source inverter with discontinuous input current.

KW - power convertors

KW - bridge circuits

KW - impedance network

KW - bridge overload clamping

KW - discontinuous input current

U2 - 10.1049/el.2015.4164

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