Results 221 to 230 of about 22,245 (264)

A comparative study of switching losses of IGBTs under hard-switching, zero-voltage-switching and zero-current-switching

Proceedings of 1994 Power Electronics Specialist Conference - PESC'94, 2002
A high power IGBT tester, based on the typical clamped inductive load circuit and incorporating zero-voltage-transition and zero-current-transition soft-switching schemes, has been developed. Both turn-on losses, including the losses associated with reverse recovery of the clamp (free-wheeling) diode, and turn-off losses are measured and compared for ...
null Konrong Wang, F.C. Lee, null Guichao Hua, D. Borojevic   +3 more
openaire   +1 more source

An improved full-bridge zero-voltage-transition PWM DC/DC converter with zero-voltage/zero-current switching of the auxiliary switches

APEC '98 Thirteenth Annual Applied Power Electronics Conference and Exposition, 2002
In this paper, an improved full-bridge (FB) zero-voltage-transition (ZVT) PWM DC/DC power converter topology is proposed. The proposed FB-ZVT PWM DC/DC power converter has the advantage of achieving zero voltage and zero current switching of the auxiliary switches using an auxiliary network.
null Dong-Yun Lee, null Byoung-Kuk Lee, null Dong-Seok Hyun   +2 more
openaire   +1 more source

An improved full-bridge zero-voltage-transition PWM DC/DC converter with zero-voltage/zero-current switching of the auxiliary switches

IEEE Transactions on Industry Applications, 2000
In this paper, a novel full-bridge (FB) zero-voltage-transition (ZVT) pulsewidth modulation (PWM) DC/DC converter topology is proposed. The proposed FB-ZVT PWM DC/DC converter has zero-voltage switching (ZVS) of main switches for the entire line and load range and an advantage of achieving ZVS and zero-current switching of the auxiliary switches using ...
null Dong-Yun Lee, null Byoung-Kuk Lee, null Sang-Bong Yoo, null Dong-Seok Hyun   +3 more
openaire   +1 more source

A novel full-bridge zero-voltage-transition PWM DC/DC converter with zero-voltage/zero-current switching of the auxiliary switches

PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196), 2002
In this paper, a novel full-bridge (FB) zero-voltage-transition (ZVT) PWM DC/DC converter topology is proposed. The proposed FB-ZVT PWM DC/DC converter has ZVS of main switches for wide load and line ranges and an advantage of achieving zero voltage and zero current switching of the auxiliary switches using the auxiliary network.
null Dong-Yun Lee, null Byoung-Kuk Lee, null Dong-Seok Hyun   +2 more
openaire   +1 more source

Zero-current zero-voltage switching for on-load tap changers

5th IET International Conference on Power Electronics, Machines and Drives (PEMD 2010), 2010
We present a new on-load tap changer (OLTC) design that provides the traditional advantages of the semiconductor-assisted OLTC over the classic, mechanical OLTC. The design provides zero-current, zero-voltage operation of both diverter switches at all times, eliminating contact wear due to arcing.
D.J. Rogers, T.C. Green
openaire   +1 more source

Zero-voltage and zero-current soft-switching PWM inverter

2005 European Conference on Power Electronics and Applications, 2005
This paper presents a zero-voltage and zero-current soft-switching (ZVZCS) PWM three phase inverter with a single auxiliary resonant commutation cell. All of the main switches in the three-phase inverter side can be turned on and turned off under zero-voltage and zero-current condition. The operating principle of proposed commutation cell is described,
E. Hiraki, T. Tanaka, M. Nakaoka
openaire   +1 more source

A zero-voltage transition boost converter using a zero-voltage switching auxiliary circuit

IEEE Transactions on Power Electronics, 2002
A soft switching boost converter with zero-voltage transition (ZVT) main switch using zero-voltage switching (ZVS) auxiliary switches is proposed. Various operating intervals of the converter are presented and analyzed. Design considerations are discussed.
R. Gurunathan, A.K.S. Bhat
openaire   +1 more source

Voltage fed zero-voltage zero-current switching PWM DC-DC converter

2008 13th International Power Electronics and Motion Control Conference, 2008
A new zero-voltage zero-current switching full-bridge phase-shifted PWM converter with controlled output rectifier is presented in this paper. IGBT switches are used in the high-frequency inverter of the DC-DC converter. Zero-voltage turn-on and zero-current turn-off for all power switches of the inverter is achieved for full load range from no-load to
Jaroslav Dudrik, Vladimir Ruscin
openaire   +1 more source

A review of zero-voltage switching and its importance to voltage regulation

2017 IEEE International Conference on Power, Control, Signals and Instrumentation Engineering (ICPCSI), 2017
Step-down (“buck”) DC-DC voltage regulator circuit design is getting harder because power density (W/m3) is rising, DC power supply voltage levels are rising, and silicon voltage demands are dropping in order to increase efficiency. The difference between the supply voltage and that required by the silicon creates a big drop across the regulator ...
Prachi D. Mohite, C. S. Thorat
openaire   +1 more source

Zero-Voltage-Switching Voltage Doubled SEPIC Converter

2011
A zero-voltage-switching (ZVS) voltage doubled single-ended primary inductor converter (SEPIC) is presented in this paper. An active clamp circuit is added to the conventional isolated SEPIC converter to clamp the voltage across the switches and provide ZVS operation.
openaire   +1 more source