Power factor improvement and closed loop control of an AC-to-DC resonant converter

Suryawanshi, Hiralal Murlidhar; Thakre, K.L.; Tarnekar, S.G.; Kothari, D. P.; Kothari, Ashwin

doi:10.1049/ip-epa:20020288

Cited by 19 publications

(6 citation statements)

References 14 publications

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“…The resonant frequency ω 0 of the Modified series parallel resonant tank circuit shown in fig. 1(b), can be expressed using (1) as discussed in [30] and [31]. The circuit model of this tank is as shown in fig.…”

Section: Mathematical Modeling Of Triplen Controlmentioning

confidence: 99%

Design and Analysis of Triplen Controlled Resonant Converter for Renewable Sources to Interface DC Micro Grid

Pachpor¹,

Suryawanshi²

2019

IEEE Access

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This paper presents a triplen controller for a dc-dc resonant converter, which provides excellent load voltage regulation with respect to wide variations in input voltage from renewable sources in a dc micro grid. The control provides enhanced converter efficiency and soft switching of all the switches from rated load to very light load. In the proposed control, duty cycle modulation, switching frequency modulation, and phase shift modulation between active bridges are simultaneously varied in order to maintain constant dc voltage. The two control variables viz., switching frequency and duty ratio are simultaneously adjusted keeping phase shift fixed, in order to regulate voltage with respect to load variations and increase in the input voltage. Whereas, the third control variable, i.e., phase shift regulates output voltage when input from renewable sources is reduced, by keeping frequency and duty ratio fixed. The three control variables provide the greater degree of freedom. The experimental and simulation results of the programmable triplen control are presented for a resonant converter operating from the rated load of 3 kW to 5% of rated load 0.15 kW. The proposed control also tested for the input voltage range of 180-260 V (i.e., 220 V, ± 18% tolerance) in order to validate the functionality of the proposed control. INDEX TERMS Switching frequency, DC-DC converter with active bridges, phase shift control, duty cycle, zero voltage switching (ZVS).

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Section: Mathematical Modeling Of Triplen Controlmentioning

confidence: 99%

Design and Analysis of Triplen Controlled Resonant Converter for Renewable Sources to Interface DC Micro Grid

Pachpor¹,

Suryawanshi²

2019

IEEE Access

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“…The mathematical model of the converter has been derived and analyzed to deliver a low ripple content, low switch turn-off stress and an improvement in efficiency [3]. A new duty cycle based mechanism suitable for parallel connected AC-DC converter with power factor correction has been proposed [4]. The duty cycle required to achieve unity power factor has been calculated based on the reference current and sensed inductor current, input and output voltage.…”

Section: Introductionmentioning

confidence: 99%

<title>Fuzzy based power factor improvement strategy for a multiple connected AC-DC converter fed drive</title>

Radhakrishnan

Ramaswamy

2012

SPIE Proceedings

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The main focus of this paper is to design a Fuzzy based control algorithm to realize an improvement in the input power factor of a multiple connected AC-DC converter fed drive system. It incorporates the role of fuzzy inference principles to generate appropriate PWM pulses for the power switches at the second stage of the power module. The philosophy is developed, with a view to reshape the input current phasor and enables it to align with the supply voltage wave in the perspective of improving the input power factor. The closed loop scheme evaluated using MATLAB based simulation exhibits an enhancement in supply power factor over a range of operating loads in addition to illustrating the speed regulating capability of the drive.

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“…They are not only responsible for increased losses but also cause excessive heating in the system [3]. Therefore regulations on line current harmonics have made power factor control, a basic requirement for power electronic equipments [4].…”

Section: Introductionmentioning

confidence: 99%

Soft Transition Operation of UPS in High-Power-Factor Mode of Three-Phase Front-End Rectifier

Dhomane

Suryawanshi

2007

2007 7th International Conference on Power Electronics and Drive Systems

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Power factor improvement and closed loop control of an AC-to-DC resonant converter

Cited by 19 publications

References 14 publications

Design and Analysis of Triplen Controlled Resonant Converter for Renewable Sources to Interface DC Micro Grid

Design and Analysis of Triplen Controlled Resonant Converter for Renewable Sources to Interface DC Micro Grid

<title>Fuzzy based power factor improvement strategy for a multiple connected AC-DC converter fed drive</title>

Soft Transition Operation of UPS in High-Power-Factor Mode of Three-Phase Front-End Rectifier

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