Resonant converter in high power factor, high voltage DC applications

Suryawanshi, H. M.; Tarnekar, S.G.

doi:10.1049/ip-epa:19981933

Cited by 10 publications

(7 citation statements)

References 12 publications

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“…First, we consider the natural frequency ω 0 and the quality factor Q of the two linear subsystems in (1),…”

Section: Canonical Formsmentioning

confidence: 99%

“…Once computed θ s as the smaller value for θ vanishing (26), from the time changes used in propositions 1 and 2 we can compute the period T (or the corresponding frequency ω = 2π/T ) of the stable oscillation in system (1). Since the normalized time θ in system (8)-(9) is related to the real time t in system (1)-(2) by the relation θ = ω 0 νt, we obtain T = 2θ s /(νω 0 ).…”

Section: Oscillation Features Regarding Applicationsmentioning

confidence: 99%

“…Resonant inverters were introduced many years ago although their use has been confined for a long time to very specific applications, such as in high-voltage power supplies or audio amplifiers [1][2][3]. With the introduction of new regulations concerning efficiency and power density, power electronics designers have been pushed to find increasingly more efficient conversion systems.…”

Section: Introductionmentioning

confidence: 99%

“…(a) The function g is defined for z ≤ẑ = P −1(1). Furthermore, if z → −∞, then θ → π and from (26), lim z→−∞ g(z) = −∞.…”

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confidence: 99%

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Limit cycle bifurcations in resonant LC power inverters under zero current switching strategy

Benadero

Ponce²,

Aroudi

et al. 2017

Nonlinear Dyn

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The dynamics of a DC-AC self-oscillating LC resonant inverter with a zero current switching strategy is considered in this paper. A model that includes both the series and the parallel topologies and accounts for parasitic resistances in the energy storage components is used. It is found that only two reduced parameters are needed to unfold the bifurcation set of this extended system: one is related to the quality factor of the LC resonant tank, and the other accounts for the balance between serial and parallel losses. Through a rigorous mathematical study, a complete description of the bifurcation set is obtained and the parameter regions where the inverter can work properly is emphasized.Postprint (author's final draft

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“…First, we consider the natural frequency ω 0 and the quality factor Q of the two linear subsystems in (1),…”

Section: Canonical Formsmentioning

confidence: 99%

Section: Oscillation Features Regarding Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…(a) The function g is defined for z ≤ẑ = P −1(1). Furthermore, if z → −∞, then θ → π and from (26), lim z→−∞ g(z) = −∞.…”

mentioning

confidence: 99%

See 2 more Smart Citations

Limit cycle bifurcations in resonant LC power inverters under zero current switching strategy

Benadero

Ponce²,

Aroudi

et al. 2017

Nonlinear Dyn

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show abstract

“…Nevertheless, in this topology, the voltage gain depended on the duty cycle of the switch current, the capacitor current, the switching frequency and the switching load resistance, leading to complicated design considerations. Suryawanshi and Tarnekar [16] presented an ac-dc converter composed of a diode rectifier, a series resonant converter with an H-bridge configuration, a high-frequency high step-up transformer and a second diode rectifier. This topology achieved a high-power factor without any active control on the line current, and both the variable frequency control and the duty ratio control could be used to regulate the output voltage; however, it drew a poor line quality at a light load.…”

Section: Introductionmentioning

confidence: 99%

Single‐phase ac to high‐voltage dc converter with soft‐switching and diode‐capacitor voltage multiplier

Young

Chen³

et al. 2014

IET Power Electronics

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This paper proposes a single-phase, soft-switching, high step-up ac-dc converter based on a diode-capacitor voltage multiplier (DCVM) with a power factor correction (PFC). By applying the PFC technology, the proposed converter promises a near-unity power factor and a low distortion line current, while providing an adjustable, high step-up dc voltage that the conventional DCVM circuits cannot achieve. To reduce the switching losses, an auxiliary circuit for implementing a soft commutation is added to the power stage of the proposed converter. For operating at a fixed switching frequency, both the main and the auxiliary switches in the power stage are turned off with the zero-current transmission (ZCT). The operating principle, the design considerations and the control strategy of the proposed converter all are detailed and investigated in this paper. A 1.2 kV/500 W laboratory prototype, which employs a commercial PFC IC UC3854 as a controller, is built for test, measurement and evaluation. Under the full-load conditions, the measured power factor, the total harmonic distortion of the line current and the system efficiency are 99.6, 4.86 and 94%, respectively. The experimental results demonstrate the validity of the proposed converter.

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Design and implementation of high efficient dual control modular resonant converter for DC microgrid

Reddy¹,

Suryawanshi²,

Talapur³

et al. 2020

IET Power Electronics

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A modular structured 12-kW resonant converter with effective zero voltage switching (ZVS) is proposed to integrate renewable energy lower voltage source to the microgrid. In this study, duty cycle control is adopted until ZVS fails and thereafter, sequential and parallel adjustment of duty cycle and the switching frequency is proposed for effective output voltage regulation. The proposed control logic ensures ZVS and output voltage regulation over wide load range even at very light loads compared to conventional control methods. Further, it maintains very high system efficiency with narrow range of frequency operation. Hence, it is easy to implement using a conventional digital controller. To minimise ripple current, each of the four converters is provided with 90° phase delayed gate pulses under the proposed control scheme. This study presents an optimal design of the tank circuit elements assimilating high permeable powder cores to reduce magnetic loss and operation with IGBT switches at an optimum point to reduce conduction loss for enhanced system efficiency. A 12-kW, 400-1600 V developed prototype is tested and experimental results are discussed.

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Resonant converter in high power factor, high voltage DC applications

Cited by 10 publications

References 12 publications

Limit cycle bifurcations in resonant LC power inverters under zero current switching strategy

Limit cycle bifurcations in resonant LC power inverters under zero current switching strategy

Single‐phase ac to high‐voltage dc converter with soft‐switching and diode‐capacitor voltage multiplier

Design and implementation of high efficient dual control modular resonant converter for DC microgrid

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