Fast controller design for single-phase power-factor correction systems

Wall, S.; Jackson, Robin

doi:10.1109/41.633465

Cited by 115 publications

(37 citation statements)

References 14 publications

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“…Interestingly, this SM-based derivation is simpler and more straight forward than the conventional large signal approach, as complicated current loop modeling is not required. The resulting general control scheme turns out to be consistent with some voltage feedforward schemes proposed previously, with all the required feedforward signal paths included systematically [4], [5]. SM operation is ensured by the existence condition and stability of the current loop can be assessed by frequency response analysis.…”

Section: Introductionmentioning

confidence: 68%

General control for boost PFC converter from a sliding mode viewpoint

Chu

Tan

Tse

et al. 2008

2008 IEEE Power Electronics Specialists Conference

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Abstract-In this paper, we propose a current control methodology for the boost PFC converter based on sliding mode control theory. The resulting control is very general in the sense that it provides input current tracking under all practical conditions by systematically including all necessary control functions that compensate for the possible nonlinearity such as the zero-crossing distortion in high line frequency condition. By choosing suitable state control variables and a proper sliding surface, the derivation arrives at a feedforward control which is similar to a previously proposed method. The implementation takes the form of a typical pulse-width modulation (PWM) control. It can be designed either as an individual current controller or as feedforward control applied to a standard PFC controller.

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Section: Introductionmentioning

confidence: 68%

General control for boost PFC converter from a sliding mode viewpoint

Chu

Tan

Tse

et al. 2008

2008 IEEE Power Electronics Specialists Conference

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“…The drawback with slow voltage loop is high ripple voltage, which is acceptable for an inverter load [16]. Also, a difference in bandwidths of voltage and current loops has been proposed [17][18][19][20] to introduce time scale separation in their dynamics, which is then utilized to make approximations to simplify the design and discussed in [11]. Current-mode control is preferred for fuel cell system [21].…”

Section: Frequency Response Curves and Simulation Resultsmentioning

confidence: 99%

Small Signal Modeling and Closed Loop Control Design of ZVS Current-fed Half-Bridge L-L Type Dc/Dc Converter with Active-Clamp

Rathore¹,

Bhat²,

Oruganti³

2010

IJCEE

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Abstract-This I. INTRODUCTIONA high-frequency (HF) transformer isolated DC-DC converter is part of a fuel cell power conditioning system for standalone or utility interface [1][2] used to boost low fuel cell stack voltage (that can vary with fuel pressure [3]) higher than the peak of the grid or rated load voltage. This stepped up DC voltage is converted into line-frequency grid/load compatible AC power supply using an inverter stage [1][2]. Soft-switching is necessary to operate the converter at higher switching frequency to achieve small size, light weight and low cost converter. Although an active-clamped DC-DC current-fed converter and its analysis and design have been recently published [2] [4][5], this converter can not maintain ZVS for wide variation in supply voltage and load variations. Therefore, a modified L-L type active-clamped current-fed ZVS DC-DC converter, shown in Fig. 1 has been proposed for this application [6]. This converter always operates with Manuscript received September 20, 2009. This work was supported by a grant from the Natural Sciences and Engineering Research Council (NSERC) of Canada.Akshay K Rathore is with the Department of Electrical and Computer Engineering, University of Illinois, Chicago, IL 60607 USA. (phone: 312-996-9548; e-mail: arathore@ uic.edu).Ashoka K. S. Bhat is with Department of Electrical and Computer Engineering, University of Victoria, Victoria, BC V8W 3P6 Canada. (e-mail: bhat@engr.uvic.ca).Ramesh Oruganti is with the Department of Electrical and Computer Engineering, National University of Singapore, Singapore (e-mail: eleramsh@nus.edu.sg).the duty cycle of main switches greater than 50% and in continuous current mode. The two main switches S 1 and S 2 are controlled by gating signals phase-shifted by 180 o .Auxiliary switches S a1 and S a2 are gated by signals complementary to main switch gating signals. The two inductors are identical but uncoupled to each other.This front-end DC-DC converter should be controlled to produce a constant voltage at the input of the inverter for all fuel pressure values. This requires small signal modeling and closed loop control design of this converter and they are not yet reported in literature and therefore form the objectives of this paper. The peak current control requires slope compensation for stability and introduces error at high ripple currents at light load and high input voltage. Therefore, average current control of the two inductor currents is used in this paper. In literature, the current control of a single inductor and coupled inductor converter topologies are presented [7][8][9][10]. The current control of two independent (uncoupled) inductor topology was presented in [11] for active-clamped ZVS two-inductor current-fed isolated DC-DC converter. Detailed small signal analysis was presented while taking into account the effect of auxiliary clamp circuit [11] for ZVS. The series inductor current state variable was discontinuous (assuming high magnetizing inductance) and therefore, was omitted in the analysis. ...

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“…Current control involves the design of PI controller parameters in order to achieve stability and meet response criteria over a certain range. To design the controller, the duty ratio to the charging current transfer function is derived [17][18][19].…”

Section: Smart Discharging and Safe Operatingmentioning

confidence: 99%

Design and Implementation of Novel Smart Battery Management System for FPGA Based Portable Electronic Devices

et al. 2017

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This paper presents the analysis and design of a smart battery management system for Field Programmable Gate Array (FPGA) based portable electronic devices. It is a novel concept of incorporating the functionality of a smart battery management system into the FPGA used by portable electronic devices, which provides the following advantages. (1) It lowers cost since the conventional commercial independent battery management circuit can be eliminated; (2) It offers more flexibility because FPGA based battery management algorithms can be specifically designed for different battery chemistries of different devices and can provide the flexibility of algorithms and functionalities updating as well. Smart battery management system concepts include four aspects: (1) smart charging; (2) battery balancing; (3) smart discharging; and (4) safety operating. One novel charging algorithm, which combines the merits of multistage charging and pulse charging, is proposed to charge a Li-ion battery pack smartly. A Proportional Integral (PI) control method is introduced to achieve the current control of charging circuit with considerable close loop stability. Simulation results from the PSIM 9.0.4 software package and experimental results from the prototype built in the lab are demonstrated to verify the effectiveness of smart charging. The realizations of battery balancing, smart discharging, and safety operating are also briefly described by taking advantage of the proposed FPGA based smart battery management system topology, which verify the feasibility of the proposed FPGA based smart battery management system for portable electronic devices.

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Fast controller design for single-phase power-factor correction systems

Cited by 115 publications

References 14 publications

General control for boost PFC converter from a sliding mode viewpoint

General control for boost PFC converter from a sliding mode viewpoint

Small Signal Modeling and Closed Loop Control Design of ZVS Current-fed Half-Bridge L-L Type Dc/Dc Converter with Active-Clamp

Design and Implementation of Novel Smart Battery Management System for FPGA Based Portable Electronic Devices

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