Circuit for clamping bridge overvoltages in voltage‐fed quasi‐ Z ‐source converter | Zendy

Kitson J. | Zendy; McNeill N. | Zendy

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Circuit for clamping bridge overvoltages in voltage‐fed quasi‐ Z ‐source converter

Author(s) -

Kitson J.,

McNeill N.

Publication year - 2016

Publication title -

electronics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.375

H-Index - 146

ISSN - 1350-911X

DOI - 10.1049/el.2015.4164

Subject(s) - electrical engineering , clamping , voltage , half bridge , bridge (graph theory) , voltage source , electronic engineering , engineering , computer science , capacitor , mechanical engineering , medicine

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.

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