A series resonant converter with constant on-time control for capacitor charging applications

Lippincott, A.C.; Nelms, R.M.; Garbi, M.; Strickland, E.

doi:10.1109/apec.1990.66406

Cited by 28 publications

(2 citation statements)

References 3 publications

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“…But the resonant frequency drifts due to tank parameter variation which is inevitable especially in wireless power transfer (WPT) [15], [18], [21] and piezoelectric transformer (PT) based industrial applications [26], [28]- [29]. This frequency drift causes reduction in A v , which could be prevented by incorporating an automatic resonant frequency tracking (ARFT) method to ensure the converter switching matches the current resonant frequency.…”

Section: Introductionmentioning

confidence: 99%

Gain-Relationship-Based Automatic Resonant Frequency Tracking in Parallel <inline-formula> <tex-math notation="LaTeX">$LLC$</tex-math></inline-formula> Converter

Kundu

Sensarma

2016

IEEE Trans. Ind. Electron.

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This paper proposes a generic control scheme for automatic resonant frequency tracking (ARFT) in resonant converters. The plant is modeled based on realistic ramp variation of resonant frequency due to slowly varying environmental conditions. The proposed ARFT scheme monitors the gain relationship between an exclusive electrical variable-pair to detect frequency drift. An analytical approach is presented to select the most suitable variable-pair for gain comparison. The effects of tank parameter variation and circuit non-idealities on the gain relationship of the chosen variable-pair have been analyzed. An online correction mechanism is proposed to nullify the influence of load variation on the proposed technique. Second order generalized integrator (SOGI) based low cost analog realization of the proposed strategy is detailed. Analytical predictions are experimentally validated by applying the control scheme to a parallel LLC tank based resonant dc-dc converter.Index Terms-Automatic resonant frequency tracking (ARFT), Gain comparator, Second order generalized integrator (SOGI), Parallel LLC tank, Dc-dc converter 0278-0046 (c)

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Section: Introductionmentioning

confidence: 99%

Gain-Relationship-Based Automatic Resonant Frequency Tracking in Parallel <inline-formula> <tex-math notation="LaTeX">$LLC$</tex-math></inline-formula> Converter

Kundu

Sensarma

2016

IEEE Trans. Ind. Electron.

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“…The capacitor charge is directly related to the current flow through the circuit and the capacitor load. The CCPS operate from near short circuit at the start point for load charging to light load at the end of the charging when the required voltage has been reached [1]- [2]. Generally, power supply for capacitor charging is used resonant converter type.…”

Section: Introductionmentioning

confidence: 99%

A new capacitor charging power supply using phase-shifted PWM full-bridge converter

Kim

Lee

et al. 2009

2009 IEEE Energy Conversion Congress and Exposition

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This paper presents circuit design and operation principle of a newly developed phase-shifted PWM full-bridge converter for capacitor charging. The proposed system is designed with soft switching techniques to achieve high efficiency. Also, proposed system is series type and it is used for pulse corona occurrence of DeSOx, DeNOx system using magnetic pulse compressor (MPC). The MPC system is required high withstanding voltage because it uses high voltage application. To overcome the problem associated with high voltage stress, the high voltage transformer separated with three sections. The performance test of the capacitor charging power supply (CCPS) was carried out with a 2 F μ load capacitor at 20kV output voltage and pulse repetition frequency is 300Hz.

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Constant-current, constant-voltage half-bridge resonant power supply for capacitor charging

Borage

Tiwari

Kotaiah

2006

IEE Proc., Electr. Power Appl.

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A series resonant converter with constant on-time control for capacitor charging applications

Cited by 28 publications

References 3 publications

Gain-Relationship-Based Automatic Resonant Frequency Tracking in Parallel <inline-formula> <tex-math notation="LaTeX">$LLC$</tex-math></inline-formula> Converter

Gain-Relationship-Based Automatic Resonant Frequency Tracking in Parallel <inline-formula> <tex-math notation="LaTeX">$LLC$</tex-math></inline-formula> Converter

A new capacitor charging power supply using phase-shifted PWM full-bridge converter

Constant-current, constant-voltage half-bridge resonant power supply for capacitor charging

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