Analysis, design and control of zero-voltage switching quasi-resonant-positive output super lift Luo converter

Jayashree, E.; Uma, G.

doi:10.1049/iet-pel.2009.0122

Cited by 9 publications

(6 citation statements)

References 13 publications

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“…These ideas are developed later in [15, 16]. Jayashree and Uma [17] propose to use the analogue resonant controller for the voltage control of a zero‐voltage switching quasi‐resonant POSL. The sliding mode control of POSL is proposed and investigated in [18].…”

Section: Introductionmentioning

confidence: 99%

Improved Luo converter modifications with increasing voltage ratio

Berkovich

Axelrod

Madar

et al. 2015

IET Power Electronics

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The study provides improved modifications of the positive output super-lift Luo converter that allows significantly increase the voltage transfer gain by the modest means. In the simplest case this increase is provided by replacing the inductor by the switched-inductor structure consisting of two inductors and three diodes. This allows getting practically double increase in the line-to-output voltage ratio at the high values of duty cycle. Analysis of steady-state and transient conditions shows that the zeros of the transfer function for the converter, as well as for the conventional boost converter, are positive. The study indicates possible ways to further increase the output voltage ratio without additional switchesby the use of magnetically coupled inductors and diode-capacitor voltage multipliers. Simulation and experimental results confirm the theoretical analysis and the advantages of the proposed converters.

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Section: Introductionmentioning

confidence: 99%

Improved Luo converter modifications with increasing voltage ratio

Berkovich

Axelrod

Madar

et al. 2015

IET Power Electronics

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show abstract

“…In most cases reported in the literature, the voltage control is carried out using the small-signal model of the systems [8][9][10][11]. The implementation of the traditional linear controller for the QRCs had been reported in [12]. The small-signal models are not adequate to represent the converter's behaviour during large transience.…”

Section: Introductionmentioning

confidence: 99%

A robust passivity based control strategy for quasi‐resonant converters

Ayubirad

Siavoshani

Yazdanpanah

2021

IET Power Electronics

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This paper presents a robust passivity‐based control (RPBC) strategy for half‐wave zero‐voltage switching quasi‐resonant (HW‐ZVS‐QR) buck and boost type converters. The proposed controller is based on energy shaping and damping injection. Theoretical analysis shows that the resulted closed‐loop HW‐ZVS‐QRs are globally asymptotically stabilised even if the physical constraint on the magnitude of the control signal is taken into account. Also, an integral function of the output error is added into the feedback path of the conventional passivity‐based control design. As a result, such controller not only offers a global asymptotic stable operation but also provides strong robustness to a wide range of parameter mismatch. It is also demonstrated that the proposed controller stabilises the converter in cases where the widely used linear multiloop controller fails. Finally, some simulation and experimental results comparing the performance of the proposed RPBC with that of the conventional linear multiloop controller are presented.

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“…For this NOESLLC, as indicated in [8], it has the significant advantages including high-voltage transfer gain, high efficiency, high power density, and reduced output voltage/inductor current ripples when compared to the traditional DC-DC converters. Hence, after this converter proposed, many researchers have focus on the modeling, analysis, control, and application of this NOESLLC [9][10][11][12][13]. For example, under assumption that the voltage across the energy-transferring capacitor is constant and equal to the input voltage in the whole switching period, Li and Chen investigated the NOESLLC operating in discontinuous conduction mode (DCM) and derived the voltage transfer gain depending on switching frequency, duty ratio, inductor, and load resistor [9].…”

Section: Introductionmentioning

confidence: 99%

“…Indu and Chamundeeswari utilized this NOESLLC to realize the maximum power point tracking (MPPT) for photovoltaic system, and the results described that, under the given solar insolation and temperature, this converter can draw maximum power from the PV panel by adjusting its duty ratio [10]. Jayashree and Uma proposed the quasi resonant NOESLLC and indicated that it has low switching losses for its zero voltage switching which is suitable for aerospace applications [11]. Under assumption that the internal resistance of the source has been known, Chamundeeswari, Seyezhai and Arul Robin established the full-order averaged model and designed the sliding model controller for the NOESLLC [12].…”

Section: Introductionmentioning

confidence: 99%

Improved DC Model and Transfer Functions for the Negative Output Elementary Super Lift Luo Converter

Wang¹

2017

Journal of Electrical Engineering and Technology

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-Negative output elementary super lift Luo converter (NOESLLC), which has the significant advantages including high-voltage transfer gain, high efficiency, high power density, and reduced output voltage/inductor current ripples when compared to the traditional DC-DC converters, is an attractive DC-DC converter for the field of negative DC voltage applications. In this study, in consideration of the voltage across the energy transferring capacitor changing abruptly at the beginning of each switching cycle, the improved averaged model of the NOESLLC operating in continuous conduction mode (CCM) is established. The improved DC model and transfer functions of the system are derived and analyzed. The current mode control is applied for this NOESLLC. The results from the theoretical calculations, the PSIM simulations and the circuit experiments show that the improved DC model and transfer functions here are more effective than the existed ones of the NOESLLC to describe its real dynamical behaviors.

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Analysis, design and control of zero-voltage switching quasi-resonant-positive output super lift Luo converter

Cited by 9 publications

References 13 publications

Improved Luo converter modifications with increasing voltage ratio

Improved Luo converter modifications with increasing voltage ratio

A robust passivity based control strategy for quasi‐resonant converters

Improved DC Model and Transfer Functions for the Negative Output Elementary Super Lift Luo Converter

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