Analysis of an integrated flyback and zeta converter with active clamping technique

Lin, Bor‐Ren; Chen, J.-J.

doi:10.1049/iet-pel.2008.0038

Cited by 29 publications

(18 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Since the time interval in this mode is negligible compared to switching period T, inductor currents i Lr1 and i Lr2 are considered constant. At time t 6 , voltages v S1,ds =V in and v S2,d =V C1 +V Cc . At this moment, the secondary winding voltages of T 1 and T 2 are all equal to zero voltage.…”

Section: Mode 5 [T 4 Tmentioning

confidence: 99%

“…Thus only the ZVS condition of S 1 is discussed. At time t 6 , the inductor currents i Lr1 (t) and i Lr2 (t) are approximately given as: In order to meet the ZVS turn-on of switch S 1 in (12), the energy stored in inductors L r1 and L r2 must be greater than the energy stored in the capacitors C S1 and C S2 in mode 7. If the duty loss D loss is negligible compared to duty cycle D, then the minimum inductance L r is expressed in (37) to realize ZVS turn-on of S 1 from light load I o,min to full load I o,max .…”

Section: Mode 7 [T 6 ≤Tmentioning

confidence: 99%

See 1 more Smart Citation

ZVS current doubler converter with series connected transformers

Lin

Chen

2011

2011 6th IEEE Conference on Industrial Electronics and Applications

View full text Add to dashboard Cite

This paper presents the system analysis, design consideration and implementation of a Zero Voltage Switching (ZVS) DC-DC converter with series connected transformers. The buck-type converter with active snubber circuit is proposed in order to limit voltage stress on power switch and to achieve ZVS turn-on. The ZVS turn-on of switches is implemented in the transition interval of two complementary switches such that the switching losses and thermal stresses on semiconductors are reduced. The current doubler rectifier is adopted at transformer secondary side in order to achieve partially ripple current cancellation. Therefore, the current ripple on output capacitor is decreased and the size of output choke and output capacitor are reduced. Experimental results for a 400W (12V/34A) prototype were presented to verify the effectiveness of the proposed converter.

show abstract

Section: Mode 5 [T 4 Tmentioning

confidence: 99%

Section: Mode 7 [T 6 ≤Tmentioning

confidence: 99%

ZVS current doubler converter with series connected transformers

Lin

Chen

2011

2011 6th IEEE Conference on Industrial Electronics and Applications

View full text Add to dashboard Cite

show abstract

“…The soft switching schemes [7]- [8] with variable switching frequency have been proposes to reduce the size of power converters and switching losses on power semiconductors. The many techniques were developed in [9]- [11] to achieve zero voltage switching, and zero current switching [12]- [14] turn-on.…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of a new soft-switching multi-output Fly-back converter

Venkanna

Viswanath

Pattnaik

2014

2014 Students Conference on Engineering and Systems

View full text Add to dashboard Cite

This paper proposes multi-output Fly-back converter using a simple auxiliary circuit. The main switch of the proposed converter operated at zero-voltage-switching (ZVS) turn-on and zero-current-switching (ZCS) turn-off condition. The auxiliary switch and the other semiconductor are operating at zero-current-switching (ZCS) turn-on and turn-off condition by using a simple auxiliary circuit. The principle of operation, theoretical analysis of the proposed multi-output Fly-back converter rated 130W and operating at 100 KHz, provided to verify its performance. The converter is simulated using PSIM platform to validate its operation and the performance results are presented.Index Terms--Fly-back converter, Multi output, ZCS, ZVS.

show abstract

“…Parallel forward converters with soft switching techniques Manuscript received Jan. 16, 2011; revised Jul. 8,2011 Recommended for publication by Associate Editor Tae-Woong Kim. † Corresponding Author: linbr@yuntech.edu.tw…”

Section: Introductionmentioning

confidence: 99%

Analysis and Implementation of a DC-DC Converter with an Active Snubber

Lin¹,

Li²

2011

Journal of Power Electronics

View full text Add to dashboard Cite

This paper presents a soft switching converter to achieve the functions of zero voltage switching (ZVS) turn-on for the power switches and dc voltage step-up. Two circuit modules are connected in parallel in order to achieve load current sharing and to reduce the size of the transformer core. An active snubber is connected between two transformers in order to absorb the energy stored in the leakage and magnetizing inductances and to limit the voltage stresses across the switches. During the commutation stage of the two complementary switches, the output capacitance of the two switches and the leakage inductance of the transformers are resonant. Thus, the power switches can be turned on under ZVS. No output filter inductor is used in the proposed converter and the voltage stresses of the output diodes is clamped to the output voltage. The circuit configuration, the operation principles and the design considerations are presented. Finally, laboratory experiments with a 340W prototype, verifying the effectiveness of the proposed converter, are described.

show abstract

Analysis of an integrated flyback and zeta converter with active clamping technique

Cited by 29 publications

References 13 publications

ZVS current doubler converter with series connected transformers

ZVS current doubler converter with series connected transformers

Design and analysis of a new soft-switching multi-output Fly-back converter

Analysis and Implementation of a DC-DC Converter with an Active Snubber

Contact Info

Product

Resources

About