TY - GEN

T1 - Zero-voltage switching implementation of a virtual infinite capacitor

AU - Yona, Guy

AU - Weiss, George

N1 - Publisher Copyright:
© 2015 IEEE.

PY - 2015/9/14

Y1 - 2015/9/14

N2 - We define the virtual infinite capacitor (VIC) as a nonlinear capacitor that has the property that for an interval of the charge Q (the operating range), the voltage V remains constant. We propose a lossless zero-voltage switching realization for the VIC using a switched power converter and capacitors. This circuit is simple but it requires a complex control algorithm that we describe. There are two controllers needed to operate a VIC: the voltage controller acts fast to maintain the desired terminal voltage, while the charge controller acts more slowly and maintains the charge Q in the desired operating range by influencing the incoming current. The VIC is useful as a filter capacitor for various applications, for example power factor compensators (PFC), as we describe. In spite of using small capacitors, the VIC can replace a very large capacitor in applications that do not require substantial energy storage. We give simulation results for a PFC working in critical conduction mode with a VIC for output voltage filtering.

AB - We define the virtual infinite capacitor (VIC) as a nonlinear capacitor that has the property that for an interval of the charge Q (the operating range), the voltage V remains constant. We propose a lossless zero-voltage switching realization for the VIC using a switched power converter and capacitors. This circuit is simple but it requires a complex control algorithm that we describe. There are two controllers needed to operate a VIC: the voltage controller acts fast to maintain the desired terminal voltage, while the charge controller acts more slowly and maintains the charge Q in the desired operating range by influencing the incoming current. The VIC is useful as a filter capacitor for various applications, for example power factor compensators (PFC), as we describe. In spite of using small capacitors, the VIC can replace a very large capacitor in applications that do not require substantial energy storage. We give simulation results for a PFC working in critical conduction mode with a VIC for output voltage filtering.

KW - Zero-voltage switching

KW - nonlinear capacitor

KW - power factor compensator

KW - power filtering

KW - stability of time-varying linear systems

KW - switched power converter

UR - http://www.scopus.com/inward/record.url?scp=84947234371&partnerID=8YFLogxK

U2 - 10.1109/PowerEng.2015.7266311

DO - 10.1109/PowerEng.2015.7266311

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AN - SCOPUS:84947234371

T3 - International Conference on Power Engineering, Energy and Electrical Drives

SP - 157

EP - 163

BT - 2015 IEEE 5th International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2015 - Proceedings

PB - IEEE Computer Society

T2 - 5th IEEE International Conference on Power Engineering, Energy and Electrical Drives, POWERENG 2015

Y2 - 11 May 2015 through 13 May 2015

ER -