Effect of Valley Switching and Switching-Frequency Limitation on Line-Current Distortions of DCM/CCM Boundary Boost PFC Converters

Huber, L.; Irving, B.T.; Jovanovic, M.M.

doi:10.1109/tpel.2008.2006053

Cited by 143 publications

(46 citation statements)

References 15 publications

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“…Isolated AC/DC converters are used in many applications, such as PC's and consumer electronics, uninterruptible power supplies, telecommunication power supplies [1,2,3,4,5,6,7,8,9,10]. Sever isolated AC/DC converter topologies with active PFC have been proposed [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Sever isolated AC/DC converter topologies with active PFC have been proposed [1,2]. These topologies has two stages: the first stage for rectification and power factor correction [3,4,5], and the other stage for galvanic isolation, output voltage regulation and conversion [2]. However, these topologies suffers from high switch losses with the drawback of many switch component needed, and this often results in an overall efficiency of less than 90%.…”

Section: Introductionmentioning

confidence: 99%

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A single stage soft-switched AC/DC power factor corrected converter with galvanic isolation

Zhang

Liu

Wang

2017

IEICE Electron. Express

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This paper describes a single-stage AC/DC Power Factor Correction (PFC) converter with galvanic isolation, and an active-clamp circuit is used to achieve zero-voltage-switching (ZVS) for both main and auxiliary switches. The ZVS operation principle of the system is illustrated in detail. Simulation and experimental results based on a 85 kHz, 3000 W prototype circuit show that the proposed converter has low component count, galvanic isolation, simple control, high power factor and high conversion efficiency in a wide load range.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A single stage soft-switched AC/DC power factor corrected converter with galvanic isolation

Zhang

Liu

Wang

2017

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…Although the size of the high-frequency transformer is small, it will result in an extra power loss and it will increase the voltage rating of the power electronic switch. The power factor corrector, which is configured by a diode rectifier and a boost converter, can solve the problem of zero-crossing distortion [9]- [14]. The input current will be sinusoidal and in phase with the input AC voltage to achieve a unity power factor.…”

Section: Introductionmentioning

confidence: 99%

A Buck-Boost Type Charger with a Switched Capacitor Circuit

Wu¹,

Jou²,

Tsai³

2015

Journal of Power Electronics

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In this paper, a buck-boost type battery charger is developed for charging battery set with a lower voltage. This battery charger is configured by a rectifier circuit, an integrated boost/buck power converter and a switched capacitors circuit. A boost power converter and a buck power converter sharing a common power electronic switch are integrated to form the integrated boost/buck power converter. By controlling the common power electronic switch, the battery charger performs a hybrid constant-current/constant-voltage charging method and gets a high input power factor. Accordingly, both the power circuit and the control circuit of the developed battery charger are simplified. The switched capacitors circuit is applied to be the output of the boost converter and the input of the buck converter. The switched capacitors circuit can change its voltage according to the utility voltage so as to reduce the step-up voltage gain of the boost converter when the utility voltage is small. Hence, the power efficiency of a buck-boost type battery charger can be improved. Moreover, the step-down voltage gain of the buck power converter is reduced to increase the controllable range of the duty ratio for the common power electronic switch. A prototype is developed and tested to verify the performance of the proposed battery charger.

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“…For power applications less than 300W, a critical conduction mode (CRM) boost PFC converter has been widely used [2]- [5]. The main advantages of the CRM boost PFC converter, when compared to the continuous conduction mode (CCM) boost PFC converter, are that it has no reverse recovery problem in the diode and it is easy to achieve zero voltage switching (ZVS) or quasi-ZVS without auxiliary circuits.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Variable On-time Control of Critical Conduction Mode Boost Power Factor Correction Converters

Kim¹,

Yi²,

Cho³

2014

Journal of Power Electronics

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Critical conduction mode boost power factor correction converters operating at the boundary of continuous conduction mode and discontinuous conduction mode have been widely used for power applications lower than 300W. This paper proposes an enhanced variable on-time control method for the critical conduction mode boost PFC converter to improve the total harmonic distortion characteristic. The inductor current, which varies according to the input voltage, is analyzed in detail and the optimal on-time is obtained to minimize the total harmonic distortion with a digital controller using a TMS320F28335. The switch on-time varies according to the input voltage based on the computed optimal on-time. The performance of the proposed control method is verified by a 100W PFC converter. It is shown that the optimized on-time reduces the total harmonic distortion about 52% (from 10.48% to 5.5%) at 220V when compared to the variable on-time control method.

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Effect of Valley Switching and Switching-Frequency Limitation on Line-Current Distortions of DCM/CCM Boundary Boost PFC Converters

Cited by 143 publications

References 15 publications

A single stage soft-switched AC/DC power factor corrected converter with galvanic isolation

A single stage soft-switched AC/DC power factor corrected converter with galvanic isolation

A Buck-Boost Type Charger with a Switched Capacitor Circuit

Enhanced Variable On-time Control of Critical Conduction Mode Boost Power Factor Correction Converters

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