Digital Controller for a Boost PFC Converter in Continuous Conduction Mode

Olayiwola, A.; Sock, B.; Zolghadri, Mohammad Reza; Homaifar, A.; Walters, M.M.; Doss, Christopher

doi:10.1109/iciea.2006.257373

Cited by 8 publications

(3 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…peak current control [14], average current control with input voltage sensing [15] and without input voltage sensing [16,17], hysteresis control [18], one cycle control [19], nonlinear carrier control [20], fuzzy logic control [21], predictive control [22], duty ratio feedforward control [23], sliding mode control [24], R-S-T digital control [25], optimal control [26] and adaptive control [27]. For our networked VFD, average current control without input voltage sensing technique [17] has been chosen for robustness.…”

Section: A Boost Rectificationmentioning

confidence: 99%

Networked PFC drive for SPPSCIM air conditioners to enable elastic load operation in constrained power systems

Ibrahim

Zaffar

2015

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society

View full text Add to dashboard Cite

Large HVAC systems are good candidates for elastic loads in demand side management optimization of smarter grid infrastructures. There is an increaseing trend of using Split-type Air Conditioners (ACs) in residential, commercial and industrial setups for fine granularity temperature control. The traditional control in each unit is through duty-cycle based hysteretic method which is simple but inefficient and requires power spikes at every start-up of the compressor. In developing countries with weak grids, people rely on backup sources like generators and UPS. Large power surge at each turn-on inflicts huge pressure on these constrained resources. Limited work has been reported that aims at energy optimization and controlled operation of Splittype ACs constructed using single phase permanent split capacitor induction machine (SPPSCIM). Our work targets operational optimization, efficiency enhancement and increased load handling capability of contrained power systems in setups employing multiple AC units. This is done through networked Variable Frequency Drives (VFD) for conventional ACs which allow elimination of surge current at turn-on and tighter setpoint control while drawing sinusoidal current near unity power factor from the constrained source. Furthermore, the networked operation allows integration of existing installed base of standalone units through Building Management System (BMS) with the central control infrastructure. The prototype networked VFD is tested on a 2.3kW Mitsubishi Electric Split-type AC through Wi-Fi and the results are presented to confirm the expected results in network mode of operation.

show abstract

Section: A Boost Rectificationmentioning

confidence: 99%

Networked PFC drive for SPPSCIM air conditioners to enable elastic load operation in constrained power systems

Ibrahim

Zaffar

2015

IECON 2015 - 41st Annual Conference of the IEEE Industrial Electronics Society

View full text Add to dashboard Cite

show abstract

“…1. The storable duty cycle calculation method is derived based on the assumptions that the boost converter works at continuous conduction mode (CCM) and that the switching frequency f s is much higher than the input line frequency f l [7]. Therefore, the boost converter can be replaced by two equivalent circuits when the switch Q is on or off, as shown in Fig.…”

Section: A Duty Cycle Adjustment Strategymentioning

confidence: 99%

A Duty Cycle Adjustment Strategy for Embedded Boost Power Factor Correction

Shi

Wang

et al. 2013

AMM

View full text Add to dashboard Cite

The embedded boost power factor correction (PFC), which is realized by a storable duty cycle control method, has been verified that it can achieve good performance when the input voltage is standard sinusoidal signal. But the input current can not keep the good sinusoidal waveform all the time when the amplitude of the input voltage changes. In order to solve the problem, this paper presents a duty cycle adjustment strategy for embedded boost power factor correction. This strategy can adjust the duty cycle data synchronously when the amplitude of the input voltage changes. Its test results show that the adjustment strategy can achieve better performance to make the input current follow the shape and phase of the input voltage. The proposed duty cycle adjustment strategy can get the embedded boost power factor correction more effective and practical.

show abstract

“…In addition, current signal becomes smaller and more distorted. The slow response of current loop and the difficulty of accurate PFC current sensing deteriorate PFC THD [1][2][3]. Another hot topic is light load efficiency improvement of DC/DC converters.…”

Section: і Introductionmentioning

confidence: 99%

Analysis of oversampling effects on digitally controlled power supply performances

2012

2012 Twenty-Seventh Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

View full text Add to dashboard Cite

A digitally controlled power supply senses its output voltage through an error A/D converter (EADC) or an A/D converter (ADC). A voltage error signal is generated by subtracting the feedback signal from a voltage reference at a frond end amplifier. The error signal is sampled and digitized and then fed to a digital compensator. The digital compensator output is a duty cycle value, which is then loaded to a following DPWM module to generate a desired PWM signal. The EADC's sampling position and sampling rate, digital filter's computing speed and DPWM's updating timing all directly affect the control loop's performance. Among these, oversampling (multiple samplings over one switching period) is one of the most effective methods to reject noise and to improve signal measurement accuracy and control loop performance. Effects of oversampling are analyzed. Detailed simulated data and test data on a PFC converter and a DC/DC converter are also provided.

show abstract

Digital Controller for a Boost PFC Converter in Continuous Conduction Mode

Cited by 8 publications

References 5 publications

Networked PFC drive for SPPSCIM air conditioners to enable elastic load operation in constrained power systems

Networked PFC drive for SPPSCIM air conditioners to enable elastic load operation in constrained power systems

A Duty Cycle Adjustment Strategy for Embedded Boost Power Factor Correction

Analysis of oversampling effects on digitally controlled power supply performances

Contact Info

Product

Resources

About