A new zero voltage and zero current power switching technique

Weinberg, A. H.; Ghislanzoni, L.

doi:10.1109/pesc.1989.48577

Cited by 14 publications

(11 citation statements)

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“…And the equivalent load R e is transformed back to the transformer and the secondary rectifier as shown in the dashed line. It must be mentioned that a similar topology was introduced in [25] briefly. Here, more analyses and verifications are provided in this paper.…”

Section: Single End Topologies Derivations and Simulationmentioning

confidence: 99%

“…By implementing the secondary winding and the equivalent load with a center-tapped rectifier, and the input current source with a voltage source in series with the input filter inductor in Fig.10 (a) and Fig.12, the corresponding resonant DCX topologies which are push-pull type are shown in Fig.13 (a) and 13(b). It must be noted that although the topology of Fig.13 (b) can be derived from the ZVZCS cells in this paper, it has been introduced and analyzed in [25], in which its ZVZCS characteristics have been revealed. Here, its simulation results with specifications of 120W, 48V to 12V are given in Fig. 14 as verification.…”

Section: Combined Cells For Higher Power Applicationsmentioning

confidence: 99%

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A Family of DC Transformer (DCX) Topologies Based on New ZVZCS Cells With DC Resonant Capacitance

Qin

Zhang

2017

IEEE Trans. Power Electron.

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The series resonant soft-switching topology is widely used in high density DCX products due to its zero switching loss. But, the conventional series resonant converter is a dual end topology, which results in complex circuit structure and high cost. In order to simplify the resonant DCX topology and reduce the cost, a novel resonant cell named input current fed (ICF) cell is proposed in this paper, which can be applied to single ended Forward topologies. The zero-voltage-switching (ZVS) on and quasi-zero-current-switching (ZCS) off for switch are both achieved. According to the duality theory of circuit, another output current sink (OCS) cell is derived. Based on the proposed ZVZCS ICF cell, two cells are interleaved to construct several dual end cells, which can be extended to push-pull, full bridge, half bridge and other dual end topologies. Based on these cells, a new family of ZVZCS resonant DCX is derived, which are suitable for high frequency and high efficiency applications with various power levels. The operating principle and characteristics of the cells and topologies are verified by simulations and experimental results.

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Section: Single End Topologies Derivations and Simulationmentioning

confidence: 99%

Section: Combined Cells For Higher Power Applicationsmentioning

confidence: 99%

A Family of DC Transformer (DCX) Topologies Based on New ZVZCS Cells With DC Resonant Capacitance

Qin

Zhang

2017

IEEE Trans. Power Electron.

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“…Especially, the soft switching power conversion systems expected as the next generation power conversion techniques are classified by the connecting methods of the active auxiliary sub-resonant snubber circuit to the power conversion equipments. [1] Our proposed high frequency inverter is the conventional PWM controlled single ended push-pull (SEPP) high frequency inverter connected by a reverse blocking active auxiliary sub-switch. By using this sub-switch, a soft switching operation over wide output range of the SEPP inverter can be attained under PWM output power regulation.…”

Section: Introductionmentioning

confidence: 99%

“…[1] Figure 1 illustrates the conventional SEPP inverter which contains two active power semiconductor switching devices (SW1/D1 and SW2/D2), two loss-less capacitances (C1 and C2), a series tuned resonance compensating capacitor (Co) and a induction heating equivalent load (Lo and Ro) [2] . Figure 2 explains the asymmetrical waveforms of the PWM gate pulse driving signals fed to both gates of the active switches to regulate output power of the inverter.…”

Section: Introductionmentioning

confidence: 99%

SEPP high-frequency inverter incorporating an auxiliary switch and its performance evaluation

Ogiwara

Fujita

Urabe

et al. 2008

2008 13th International Power Electronics and Motion Control Conference

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This paper presents a single ended push-pull (SEPP) high frequency inverter incorporating a reverse blocking active auxiliary quasi resonant circuit using bipolar mode static induction transistors (BSITs) as active switches. This inverter can realize soft switching of the active switches over wider output power regulation range compared with the conventional SEPP inverter. It is performed by incorporating an auxiliary active switch to the conventional SEPP inverter to feed a required current for the soft switching operation of the main switches. The current fed to the main switches during their short switching period assists their soft switching operation over wide output power regulation range. The detailed evaluation of its operational principle and characteristics is carried out with the aid of computer aided simulation and the experimental result obtained by a bread board.

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“…The principle of parallel regulation, presented on figures 2 and 3, has been tested on a resonant converter that simultaneously implements zero voltage and zero current switching, see figure 5 [4]. The regulator processes 20% of the power and therefore it decreases the efficiency of the unregulated converter in 2%, see figure 6.…”

Section: Methodsmentioning

confidence: 99%

Parallel power regulation techniques for resonant converters

Carrasco

Garcia²,

Ejea³

et al.

V IEEE International Power Electronics Congress Technical Proceedings, CIEP 96

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Parallel power regulation techniques spectacularly increase the efficiency of power converters, achieving regulation by handling only a percentage of the power transmitted from the input to the output, in contrast to classical regulation schemes where all the power flow is controlled in order to regulate the output. Our work describes a procedure to parallel regulate high efficiency resonant converters that operate at constant frequency and constant duty cycle and that otherwise should be regulated using preregulation or post-regulation principles. As a result, efficiency increments of up to 6% are obtained when providing output regulation against 20% input variation.

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A new zero voltage and zero current power switching technique

Cited by 14 publications

References 1 publication

A Family of DC Transformer (DCX) Topologies Based on New ZVZCS Cells With DC Resonant Capacitance

A Family of DC Transformer (DCX) Topologies Based on New ZVZCS Cells With DC Resonant Capacitance

SEPP high-frequency inverter incorporating an auxiliary switch and its performance evaluation

Parallel power regulation techniques for resonant converters

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