A new control scheme for boost PFC converters for both CCM and DCM operations

Ku, Chung-Ping; Cogălniceanu, Dan; Lin, Sheng-Hsien

doi:10.1109/ecce.2011.6063933

Cited by 6 publications

(3 citation statements)

References 10 publications

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“…3.4. Pulse Width Modulation (PWM) Circuit Figure 7 shows a PWM circuit where it can be seen that an integrated current v ics obtained from (9) is compared with with a carrier signal v carrier generated from (12). This comparison can generate a gate turn-on signal for the main MOSFET.…”

Section: Current Integratormentioning

confidence: 99%

“…When a converter using the method operates in discontinuous conduction mode (DCM), PFC performance can be deteriorated [10]. Accordingly, various control methods have been proposed to overcome the current distortion caused by DCM operation [11][12][13][14]. Figure 1 shows a control block diagram of MCC method proposed in [15], which could improve the current distortion at DCM operation.…”

Section: Introductionmentioning

confidence: 99%

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Improved Modulated Carrier Controlled PFC Boost Converter Using Charge Current Sensing Method

Kim

Won

2018

Energies

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An improved modulated carrier control (MCC) method is proposed to offer high power factor (PF) and low total harmonic distortion (THD) at a wide input voltage range and load variation. The conventional MCC method not only requires a multiplier and divider, but also is hard to be implemented with a micro controller unit without a high frequency oscillator. To overcome the problem and maintain the advantages of the conventional MCC method, the proposed MCC method adopts a current integrator, an output voltage amplifier, a zero-current duration (ZCD) demodulator of the boost inductor, and a carrier generator. Thus, it can remove a multiplier and well, as it allows for being operable with a general micro control unit. This paper presents an operation principle of the proposed control method. To verify the proposed control method, experimental results with 400 W PFC boost converter is demonstrated.

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Section: Current Integratormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improved Modulated Carrier Controlled PFC Boost Converter Using Charge Current Sensing Method

Kim

Won

2018

Energies

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“…Due to these nonlinear loads in the utility system, leads to generation of harmonics, low efficiency, low power factor and affect other appliances connected to the system. To overcome these difficulties PFC techniques [1]- [3] were used.…”

Section: Introductionmentioning

confidence: 99%

Integrator controlled semi-bridgelesss PFC boost converter

Sudheer

Kanimozhi

Sreedevi

2015

2015 International Conference on Circuits, Power and Computing Technologies [ICCPCT-2015]

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The front end AC/DC converter of level-II battery chargers consists of a full bridge rectifier for conversion which leads to power losses and thermal management problem at higher loads this makes the converter performance less efficient. The proposed converter Semi-Bridgeless PFC boost converter is used to achieve high efficiency, low power losses with power factor closer to unity at higher loads. The current sharing between the semiconductor devices used in the circuit makes the converter to operate at higher loads unlike conventional topologies. This paper deals with the implementation of One-Cycle Control or Integration Reset Technique in semi-bridgeless PFC boost converter. It employs a resettable integrator which control the input current to be in phase with voltage to achieve power factor closer to unity. The advantage of this technique is that it requires only one voltage, current sensor and no multipliers which makes the control technique a cost-effective solution. The circuit simulation work is done using PSIM software.

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