A Modified Dual-Output Interleaved PFC Converter Using Single Negative Rail Current Sense for Server Power Systems

Düşmez, Serkan; Choudhury, Shamim; Bhardwaj, Manish; Akin, Bilal

doi:10.1109/tpel.2014.2319734

Cited by 20 publications

(12 citation statements)

References 20 publications

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“…If f p is a repeating decimal, the fundamental frequency f re of the motor current and the sampling frequency f s cannot be set as a positive integer or a finite decimal to meet (10) and (11), and the memory number N also cannot be set as a positive integer. In order not to set a fraction at a repeating decimal, it is necessary that the prime factor of the denominator is only 2 and 5.…”

Section: Periodicity Of Input Current and Dc-link Voltagementioning

confidence: 99%

Current Ripple Suppression Control Based on Prediction of Resonance Cancellation Voltage for Electrolytic-Capacitor-Less Inverter

et al. 2017

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In an electrolytic-capacitor-less single-phase to three-phase inverter, the resonance between the line inductance on the source side and the DC-link capacitor causes an input current ripple. In this paper, a new approach for suppressing the input current ripple due to this resonance is described. This paper proposes a new control method that does not emulate the action of the damping resistor for passive damping. The proposed method cancels the resonance by using a DC-link capacitor discharge actively. In the proposed method, a cancellation voltage pulse that cancels the resonance is added to one of the three-phase voltage references for the inverter. The cancellation voltage is calculated by feeding back the variables relative to the discharge. The effectiveness of the proposed method is validated by experimental results.

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Section: Periodicity Of Input Current and Dc-link Voltagementioning

confidence: 99%

Current Ripple Suppression Control Based on Prediction of Resonance Cancellation Voltage for Electrolytic-Capacitor-Less Inverter

et al. 2017

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“…Today, boost rectifiers are the most commonly-used circuit structures implemented for power factor correction. However, some consumer electronic devices, portable devices and server power applications [4,5] require lower dc voltage level than the main ac voltage source. The dc output voltage in boost rectifiers is always higher than the peak value of the main input ac voltage.…”

Section: Introductionmentioning

confidence: 99%

A Step Up/Down Power-Factor-Correction Converter with Modified Dual Loop Control

Liao

2020

Energies

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A step up/down AC/DC converter with modified dual loop control is proposed. The step up/down AC/DC converter features the bridgeless characteristic which can reduce bridge-diode conduction losses. Based on the step up/down AC/DC converter, a modified dual loop control scheme is proposed to achieve input current shaping and output voltage regulation. Fewer components are needed compared with the traditional bridge and bridgeless step up/down AC/DC converters. In addition, the intermediate capacitor voltage stress can be reduced. Furthermore, the top and bottom switches still have zero-voltage turn-on function during the negative and positive half-line cycle, respectively. Hence, the thermal stresses can also be reduced and balanced. Simulation and experimental results are provided to verify the validity of the proposed step up/down AC/DC converter and its control scheme.

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“…Extended reviews of bridgeless active rectifiers based on symmetrical and asymmetrical schemes are presented in [11], [12], and [13]. Besides the bridgeless converters, interleaved converters are also a pertinent set of active rectifiers [14]. In the similar background of power quality improvement, new topologies of grid-tied inverters are emerging as an alternative to the conventional full-bridge and neutral-point clamped inverters, mainly as a support for renewables interface.…”

Section: Introductionmentioning

confidence: 99%

A Novel Control Strategy Based on Predictive Control for a Bidirectional Interleaved Three-Phase Converter

Monteiro

Sousa

Martins

et al. 2018

2018 13th APCA International Conference on Control and Soft Computing (CONTROLO)

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An experimental confirmation of predictive control applied to a bidirectional interleaved three-phase (BIT) converter is presented. The BIT converter is a powerful solution for numerous applications, mainly, renewables interface, motor drivers, active rectifiers, and active power filters. However, a precise and robust digital control strategy is required, maintaining a low computational effort. In this paper, a predictive control based on continuous control set is proposed as a new control scheme for the BIT converter, permitting the control of the ac side current with fixed switching frequency and with a faster response. The predictive control scheme applied to the BIT converter is defined along the paper, evidencing in detail the digital employment aspects according to the discrete-time model of the BIT converter. An explicit experimental validation under realistic operating conditions is presented using a developed laboratorial prototype, highlighting the convenience of the control applied to the BIT converter.

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A Modified Dual-Output Interleaved PFC Converter Using Single Negative Rail Current Sense for Server Power Systems

Cited by 20 publications

References 20 publications

Current Ripple Suppression Control Based on Prediction of Resonance Cancellation Voltage for Electrolytic-Capacitor-Less Inverter

Current Ripple Suppression Control Based on Prediction of Resonance Cancellation Voltage for Electrolytic-Capacitor-Less Inverter

A Step Up/Down Power-Factor-Correction Converter with Modified Dual Loop Control

A Novel Control Strategy Based on Predictive Control for a Bidirectional Interleaved Three-Phase Converter

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