EPE Association: EPE 1999 - Topic 04c: Converter Control - Application to Single Phase Systems

EPE 1999 - Topic 04c: Converter Control - Application to Single Phase Systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 04: CONTROL > EPE 1999 - Topic 04c: Converter Control - Application to Single Phase Systems

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   A Novel Speed Control Technique for Single-Phase Induction Motor
By A. S. Zein El-Din; A. E. El-Sabbe [View]
[Download]

Abstract: In this paper, a novel speed control of a single phase induction motor is proposed using a modified inverter. Three MOSFETs are used for controlling the flux linkage of a single phase transformer, its secondary winding is connected in series with the motor. On-line Bang-Bang speed control of motor scheme is implemented using a microprocessor to derive the inverter. A mathematical model for the single-phase induction motor is presented, which is used to build up a simulation program for a certain desired speed. Experimental results have been carried out to investigate the motor performance with the controller. Good agreement has been obtained between simulation and experimental results.

   Advanced Control of a Switching Buck Regulator
By M. Elmore; V. Nikulin; V. Skormin [View]
[Download]

Abstract: Increasing demands of electronic loads on their power supplies can be met by advanced control schemes. Model reference control of a switching buck regulator, implemented in a simulation setup, is considered and subjected to a comprehensive simulation study. This control approach results in stable operation and desired transient response of the buck converter under varying load and input voltage, and effects of parameter uncertainty and drift. The adaption mechanism is designed utilizing the hyperstability and positivity principles. Implementation aspects are addressed.

   An Output Feedback Design for Series-Parallel Resonant Converters
By V. Croulard; J. Boichot; E. Godoy; N. Aymard [View]
[Download]

Abstract: This paper deals with the control law using two switched gains and a discrete-time control signal - with variable sampling period - of a double resonant DC/DC converter (non linear system used to supply X-ray tube in medical imaging). It compares the optimal output feedback, whose algorithm is detailed, to the more performing and classical optimal state space feedback.

   Current Control for PWM Converters Based on Internal Model Principle
By S. Fukuda; T. Yoda [View]
[Download]

Abstract: A new current control method based on the internal model principle is proposed. It does not use any coordinate transformations. the model can be used for tracking an arbitrary number of harmonic, dc component or fundamental frequency component signals, and is applied too a single-phase active filter. The validity is confirmed by simulation and experimental results.

   Design Optimisation of Switched Mode Power Supplies (SMPS) Feedback Control
By C. Bunlaksananusorn; D. E. Macpherson [View]
[Download]

Abstract: In this paper, a method for optimising the design of a Switched Mode Power Supply (SMPS) error amplifier compensation circuit is presented. the proposed method performs the design by means of an iterative time-domein circuit simulation/optimisation, giving a set of optimal component values that yields the desired power supply performance. A design example is given with the results confirmed by experiment.

   Generalized Predictive Controller Applied in Boost Converter Input Current Control
By A. Magzan; N. Periæ; I. Petroviæ [View]
[Download]

Abstract: This paper describes the GPC (Generalized Predictive Controller) application to boost converter input current control, which serves as an active filter at input of multi-system converter supplied from a dc and an ac network. The proper effect of GPC on input current dynamic behaviour is shown by comparing the current step responses when a GPC and a PI controller is applied. The experimental results confirm that GPC application to boost converter meets the control requirements.

   PWM Control for Parallel Converters in the Current Sharing Mode
By A. J. Nascimento Jr.; V. J. Farias; J. B. Vieira Jr.; L. C. de Freitas [View]
[Download]

Abstract: This paper presents a new suitable approach for current sharing control in the parallel DC/DC converters operation. In order to investigate the validity and quality of the proposed control, two Buck converters with different input voltage and different output filter inductors are studied. Proposed Topology, design procedure, simulation and experimental results are presented in this paper.

   Ramp-Synchronized Sliding-Mode Hybrid Control of Buck Converter
By A. Ras; F. guinjoan [View]
[Download]

Abstract: A hybrid controller for Buck converter is presented. Sliding-mode acts at first stage, providing fast dynamic response; next an adequately designed ramp is added, featuring constant switching frequency in steady-state, where absence of error is achieved without computing output voltage.

   Single-Phase PWM Rectifier with Function of Active Power Filter
By T. Kataoka; I. Murota; Y. Fuse; D. Nakajima; S. Nishikata [View]
[Download]

Abstract: To reduce harmonic currents flowing in electric power systems, a voltage-type PWM recitifier having the function of an active power filter is developed. Two methods for detection of harmonic currents in the power systems are presented. Based on this, a method for generation of modulating signals for the rectifier is presented, which are composed of a line-frequency sinusoidal signal and a signal for harmonic compensation. Experimental investigation of a single-phase PWM rectifier in which the developed method is employed is carried out to confirm its rectifying operation and operation as an active power filter.

   Sliding Control Design of Switching Regulators Based on Ackermann's Formula
By J. Matas; L. Garcia de Vicuña; O. López; M. Castilla; M. López [View]
[Download]

Abstract: In this paper we present a sliding mode controller design for DC-DC switching regulators using Ackermann's formula. This procedure allows adequate system eigenvalues placement to obtain a desired dynamic behavior. this method is applied to control buck, boost and buck-boost converters. The simulation and experimental results show good dynamic behavior during the start-up transient response, and against load and line perturbations.

   Sliding Mode Control Design for Modular Power Systems with Line Filters Using Lyapunov's Direct Method
By M. Lopez; L. García de Vicuña; M. Castilla; J. Matas; O. López [View]
[Download]

Abstract: Lyapunov’s direct method is employed to design a multi-input sliding mode control applied to a modular power systems with input filters. This method allows us to obtain sliding surfaces that guarantee asymptotic stability in the whole space state, independently of the number of active modules present in the system. Besides, this method also allows to achieve a good transient response against changes in the load and variations of the power stage parameters.

   Sliding Mode Controller for Single Phase AC/DC Buck-Boost Converter
By V. Fernao Pires; J. Fernando Silva [View]
[Download]

Abstract: In this paper, a robust sliding mode controller for the single-phase AC/DC Buck-Boost converter is proposed. This "Just In Time" switching controller, ensures a near unity power factor operation, input current with low harmonic content, fast dynamic response of the output voltage and robustness to load variations. To achieve near unity input power factor the input current must be a sinusoidal waveform with the same phase of the input voltage and whose amplitude is regulated by the output voltage controller. Experimental and simulation results are presented, and the performances compared with the behaviour of the conventional Proportional Integral (PI) output voltage control, aided by a inner loop for the PWM current mode modulator.

EPE 1999 - Topic 04c: Converter Control - Application to Single Phase Systems
You are here: EPE Documents > 01 - EPE & EPE ECCE Conference Proceedings > EPE 1999 - Conference > EPE 1999 - Topic 04: CONTROL > EPE 1999 - Topic 04c: Converter Control - Application to Single Phase Systems
	[return to parent folder]

	A Novel Speed Control Technique for Single-Phase Induction Motor By A. S. Zein El-Din; A. E. El-Sabbe	[View] [Download]
Abstract: In this paper, a novel speed control of a single phase induction motor is proposed using a modified inverter. Three MOSFETs are used for controlling the flux linkage of a single phase transformer, its secondary winding is connected in series with the motor. On-line Bang-Bang speed control of motor scheme is implemented using a microprocessor to derive the inverter. A mathematical model for the single-phase induction motor is presented, which is used to build up a simulation program for a certain desired speed. Experimental results have been carried out to investigate the motor performance with the controller. Good agreement has been obtained between simulation and experimental results.

	Advanced Control of a Switching Buck Regulator By M. Elmore; V. Nikulin; V. Skormin	[View] [Download]
Abstract: Increasing demands of electronic loads on their power supplies can be met by advanced control schemes. Model reference control of a switching buck regulator, implemented in a simulation setup, is considered and subjected to a comprehensive simulation study. This control approach results in stable operation and desired transient response of the buck converter under varying load and input voltage, and effects of parameter uncertainty and drift. The adaption mechanism is designed utilizing the hyperstability and positivity principles. Implementation aspects are addressed.

	An Output Feedback Design for Series-Parallel Resonant Converters By V. Croulard; J. Boichot; E. Godoy; N. Aymard	[View] [Download]
Abstract: This paper deals with the control law using two switched gains and a discrete-time control signal - with variable sampling period - of a double resonant DC/DC converter (non linear system used to supply X-ray tube in medical imaging). It compares the optimal output feedback, whose algorithm is detailed, to the more performing and classical optimal state space feedback.

	Current Control for PWM Converters Based on Internal Model Principle By S. Fukuda; T. Yoda	[View] [Download]
Abstract: A new current control method based on the internal model principle is proposed. It does not use any coordinate transformations. the model can be used for tracking an arbitrary number of harmonic, dc component or fundamental frequency component signals, and is applied too a single-phase active filter. The validity is confirmed by simulation and experimental results.

	Design Optimisation of Switched Mode Power Supplies (SMPS) Feedback Control By C. Bunlaksananusorn; D. E. Macpherson	[View] [Download]
Abstract: In this paper, a method for optimising the design of a Switched Mode Power Supply (SMPS) error amplifier compensation circuit is presented. the proposed method performs the design by means of an iterative time-domein circuit simulation/optimisation, giving a set of optimal component values that yields the desired power supply performance. A design example is given with the results confirmed by experiment.

	Generalized Predictive Controller Applied in Boost Converter Input Current Control By A. Magzan; N. Periæ; I. Petroviæ	[View] [Download]
Abstract: This paper describes the GPC (Generalized Predictive Controller) application to boost converter input current control, which serves as an active filter at input of multi-system converter supplied from a dc and an ac network. The proper effect of GPC on input current dynamic behaviour is shown by comparing the current step responses when a GPC and a PI controller is applied. The experimental results confirm that GPC application to boost converter meets the control requirements.

	PWM Control for Parallel Converters in the Current Sharing Mode By A. J. Nascimento Jr.; V. J. Farias; J. B. Vieira Jr.; L. C. de Freitas	[View] [Download]
Abstract: This paper presents a new suitable approach for current sharing control in the parallel DC/DC converters operation. In order to investigate the validity and quality of the proposed control, two Buck converters with different input voltage and different output filter inductors are studied. Proposed Topology, design procedure, simulation and experimental results are presented in this paper.

	Ramp-Synchronized Sliding-Mode Hybrid Control of Buck Converter By A. Ras; F. guinjoan	[View] [Download]
Abstract: A hybrid controller for Buck converter is presented. Sliding-mode acts at first stage, providing fast dynamic response; next an adequately designed ramp is added, featuring constant switching frequency in steady-state, where absence of error is achieved without computing output voltage.

	Single-Phase PWM Rectifier with Function of Active Power Filter By T. Kataoka; I. Murota; Y. Fuse; D. Nakajima; S. Nishikata	[View] [Download]
Abstract: To reduce harmonic currents flowing in electric power systems, a voltage-type PWM recitifier having the function of an active power filter is developed. Two methods for detection of harmonic currents in the power systems are presented. Based on this, a method for generation of modulating signals for the rectifier is presented, which are composed of a line-frequency sinusoidal signal and a signal for harmonic compensation. Experimental investigation of a single-phase PWM rectifier in which the developed method is employed is carried out to confirm its rectifying operation and operation as an active power filter.

	Sliding Control Design of Switching Regulators Based on Ackermann's Formula By J. Matas; L. Garcia de Vicuña; O. López; M. Castilla; M. López	[View] [Download]
Abstract: In this paper we present a sliding mode controller design for DC-DC switching regulators using Ackermann's formula. This procedure allows adequate system eigenvalues placement to obtain a desired dynamic behavior. this method is applied to control buck, boost and buck-boost converters. The simulation and experimental results show good dynamic behavior during the start-up transient response, and against load and line perturbations.

	Sliding Mode Control Design for Modular Power Systems with Line Filters Using Lyapunov's Direct Method By M. Lopez; L. García de Vicuña; M. Castilla; J. Matas; O. López	[View] [Download]
Abstract: Lyapunov’s direct method is employed to design a multi-input sliding mode control applied to a modular power systems with input filters. This method allows us to obtain sliding surfaces that guarantee asymptotic stability in the whole space state, independently of the number of active modules present in the system. Besides, this method also allows to achieve a good transient response against changes in the load and variations of the power stage parameters.

	Sliding Mode Controller for Single Phase AC/DC Buck-Boost Converter By V. Fernao Pires; J. Fernando Silva	[View] [Download]
Abstract: In this paper, a robust sliding mode controller for the single-phase AC/DC Buck-Boost converter is proposed. This "Just In Time" switching controller, ensures a near unity power factor operation, input current with low harmonic content, fast dynamic response of the output voltage and robustness to load variations. To achieve near unity input power factor the input current must be a sinusoidal waveform with the same phase of the input voltage and whose amplitude is regulated by the output voltage controller. Experimental and simulation results are presented, and the performances compared with the behaviour of the conventional Proportional Integral (PI) output voltage control, aided by a inner loop for the PWM current mode modulator.