Implementation of a series resonant converter with series–parallel transformers

Lin, Bor‐Ren; Wu, Sen‐Tung

doi:10.1049/iet-pel.2010.0333

Cited by 28 publications

(19 citation statements)

References 14 publications

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“….=L m6 L m , L r1 =L r2 =L r3 L r and L r <<L m ; (4) turns ratio of T 1 -T 6 is n=n p /n s1 =n p /n s2 ; (5) V Cin1 and V Cin2 are two balanced input voltage sources; and (6) power semiconductors including S 1 -S 4 , D 1 -D 12 and D a -D b are ideal. Fig.…”

Section: System Analysis and Operation Principlementioning

confidence: 99%

“…The maximum AC voltage gain of the proposed converter at the switching frequency can be derived from (11) under the given parameters k, Q, f s and f r . From (12), the necessary turns ratio of the isolated transformers T 1 -T 6 is expressed as: …”

Section: Circuit Characteristicsmentioning

confidence: 99%

“…Although the switching losses on power switches are improved, the rectifier diodes at secondary side still have serious reverse recovery losses. Series resonant converters have been studied in [8][9][10][11][12][13]. Series resonant converters have the features of ZVS turn-on for all power switches and possible ZCS turn-off for all rectifier diodes within a wide range of input voltage and load conditions.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of a ZVS converter with the balanced output currents

Lin

Nian

Wang

2014

TENCON 2014 - 2014 IEEE Region 10 Conference

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A new three-level zero voltage switching (ZVS) pulse-width modulation (PWM) converter with the balanced output currents is presented for medium input voltage and high load current applications. Three-level converter with two clamped diodes and one flying capacitor is adopted to reduce the voltage stress of power semiconductors for medium voltage application and achieve ZVS operation for power MOSFETs. In order to reduce the size of the magnetic core and copper windings and to decrease the current rating of the rectifier diodes, three circuit cells are adopted in the proposed converter for high current applications. In each circuit cell, two transformers with a series connection are used in order to balance the output currents. To overcome the drawback of a wide range of switching frequencies in conventional series resonant converters, the duty cycle PWM control is adopted in the proposed circuit to achieve ZVS turn-on for power MOSFETs and zero current switching (ZCS) turn-off for rectifier diodes. Finally, experimental results are provided to demonstrate the performance of the proposed converter.

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Section: System Analysis and Operation Principlementioning

confidence: 99%

Section: Circuit Characteristicsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of a ZVS converter with the balanced output currents

Lin

Nian

Wang

2014

TENCON 2014 - 2014 IEEE Region 10 Conference

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“…Several types of resonant converters have been applied in dc power supply applications. Series resonant converters have poor no-load regulation, poor short circuit characteristics and need a larger output filter capacitor [7][8][9]. However its switching losses decrease with load decrease.…”

Section: Abstract-mentioning

confidence: 99%

Linearized Large Signal Modeling, Analysis, and Control Design of Phase-Controlled Series-Parallel Resonant Converters Using State Feedback

Aboushady

Ahmed

Finney

et al. 2013

IEEE Trans. Power Electron.

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“…However, the rectifier diodes at the secondary side have reverse recovery losses. Series resonant converters [11]- [16] have been proposed to have the features of ZVS turn-on for power switches and ZCS turn-off for rectifier diodes within a wide range of input voltage and load conditions when the switching frequency is less than the series resonant frequency. The main drawback of series resonant converters is the wide range of switching frequencies from light load to full load.…”

Section: Introductionmentioning

confidence: 99%

New Three-Level PWM DC/DC Converter - Analysis, Design and Experiments

Lin¹,

Chen²

2014

Journal of Power Electronics

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This paper studies a new three-level pulse-width modulation (PWM) resonant converter for high input voltage and high load current applications. In order to use high frequency power MOSFETs for high input voltage applications, a three-level DC converter with two clamped diodes and a flying capacitor is adopted in the proposed circuit. For high load current applications, the secondary sides of the proposed converter are connected in parallel to reduce the size of the magnetic core and copper windings and to decrease the current rating of the rectifier diodes. In order to share the load current and reduce the switch counts, three resonant converters with the same active switches are adopted in the proposed circuit. Two transformers with a series connection in the primary side and a parallel connection in the secondary side are adopted in each converter to balance the secondary side currents. To overcome the drawback of a wide range of switching frequencies in conventional series resonant converters, the duty cycle control is adopted in the proposed circuit to achieve zero current switching (ZCS) turn-off for the rectifier diodes and zero voltage switching (ZVS) turn-on for the active switches. Finally, experimental results are provided to verify the effectiveness of the proposed converter.

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Implementation of a series resonant converter with series–parallel transformers

Cited by 28 publications

References 14 publications

Analysis of a ZVS converter with the balanced output currents

Analysis of a ZVS converter with the balanced output currents

Linearized Large Signal Modeling, Analysis, and Control Design of Phase-Controlled Series-Parallel Resonant Converters Using State Feedback

New Three-Level PWM DC/DC Converter - Analysis, Design and Experiments

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