EPE Association: EPE-PEMC 2006 - Topic 13: ACTIVE FILTERING AND UNITY POWER FACTOR CORRECTION CIRCUITS

EPE-PEMC 2006 - Topic 13: ACTIVE FILTERING AND UNITY POWER FACTOR CORRECTION CIRCUITS
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2006 - Conference > EPE-PEMC 2006 - Topic 13: ACTIVE FILTERING AND UNITY POWER FACTOR CORRECTION CIRCUITS

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   A Current Source Active Power Filter Controlled by a Sliding Mode Approach
By Vitor Fernao Pires, Jose Fernando Silva [View]
[Download]

Abstract: In this paper presents a current source active power filter controlled by a sliding mode approach is presented. The proposed control method is fast and robust and uses the sliding mode technique to generate áâ spacevector modulation. This allows forcing the input line currents to track the desired reference. With this control strategy the input currents of the active power filter are actively shaped, being possible to maintain the desired currents even with high ripple DC inductor current. Simulation results are presented and discussed. The obtained results show the effectiveness of the proposed control method.

   A Novel High Performance Current Control for Shunt Active Filters
By Wanchak Lenwari, Mark Sumner, Pericle Zanchetta [View]
[Download]

Abstract: This paper proposes an accurate and simple current control for Shunt Active Filters (SAF) based on a P+Resonant compensator used in conjunction with traditional PI control. The proposed current control system is designed to operate with a single dq reference frame, synchronous with the 50 Hz supply voltage, for the compensation of 5th and 7th harmonics. Another major advantage of this strategy is the ability to eliminate the external disturbance from the 5th and 7th harmonic components caused by power supply. The principle of the proposed control method and the design procedure is here presented. Control stability under the variation of supply impedance is also investigated. Simulation and experimental results confirm the effectiveness of the suggested approach.

   A Simple Prediction based Current Reference Generation Method for a Four-Wire Active Power Filter
By Sami Pettersson, Mikko Routimo, Mika Salo, Heikki Tuusa [View]
[Download]

Abstract: This paper presents a simple prediction based current reference generation method for a four-wire active power filter. In the steady state the current reference is generated according to data collected during the previous period. However, during the transient state of the load the prediction is no longer valid. Thus, in order to maintain the effective harmonic filtering performance a computational control delay compensation method is used instead. The proposed method is verified by experimental tests in a laboratory with a microcontroller controlled four-wire active power filter prototype.

   High Performance Predictive Current Control for Active Shunt Filters
By Milijana Odavic, Pericle Zanchetta, Mark Sumner, Zeljko Jakopovic [View]
[Download]

Abstract: A discrete-time predictive current controller, for the application of active power filtering, is designed and analyzed in this paper. A modified algorithm of reference current prediction in the conditions of step change in amplitude and/or frequency is proposed. The theoretical analysis and the validity of the proposed method are verified by simulations. Comparison for the 5th and the 7th harmonic current control is made with the results achieved using synchronous PI plus lead compensator.

   Innovative Capacitive Decoupling for a Universal Power Conditioner based on Two-Shunt-VSITopology
By Maria Stefania Carmeli, Francesco Castelli-Dezza, Gabrio Superti-Furga [View]
[Download]

Abstract: The present paper proposes a series capacitive decoupling for an innovative Universal Power Conditioner. Preliminarily a comparison with series inductive configuration is discussed. Control strategy is then proposed. The series capacitive configuration allows the same basic characteristics of the other one, obtaining the same dynamic performances and reference tracking precision. Moreover the decoupling capacitor has two important advantages: high frequency ripple is filtered and inductive reactive power of system inductors is balanced with a significant benefit in terms of power converter dimensioning .

   Shunt Active Filter for Voltage and Power Improvements within a Micro-grid
By Fabio Carastro, Mark Sumner, Pericle Zanchetta [View]
[Download]

Abstract: This paper discusses the application of a shunt active power filter with energy storage, for voltage and power improvements within a local power supply network (micro-grid) in presence of distributed generation. Theoretical analysis investigates the control the shunt active power filter in response to voltage sag. The shunt active filter operates over a short period of time, and is coordinated with the response of a distributed generator with a slower dynamic response. Simulation results show that the proposed method makes it possible to regulate the grid voltage at its nominal value and also allows the power sharing between the active filter and the local synchronous generator.

   Speeding-Up of Dynamic States for Single-Phase Power Active Filter
By Branislav Dobrucky, Robert Sul, Rastislav Pavlanin, Viktor Bobek, Igor Gerek [View]
[Download]

Abstract: The paper deals with the new method of analysis of single-phase power electronic systems. Using a new particular transform theory the ordinary single-phase system can be transformed into equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented by fictitious second phase so that both of them will create orthogonal and ortho-normal system, as is usual in three-phase systems. Application of above theory makes it possible to use complex methods of analysis as instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. Three different ways of reference current determination are discussed results. The paper shows some examples of the experimental verification results, which proved an extremely fast response of the single- phase active filter with control algorithm, based on the described method.

   Steady-State Characteristics of a Novel PFC Converter Operating in DCM
By Kentaro Fukushima, Takeshi Uematsu, Junichi Yamamoto, Katsuhiko Shimizu, Tamotsu Ninomiya [View]
[Download]

Abstract: This paper proposes a novel PFC converter topology. The novel PFC converter is a Buck-Boost type and its output voltage is suppressed up to 200V. As the result, the withstand voltage of any components can be reduced. That is possible to be higher efficiency and smaller size. Furthermore, the converter is easy to control when the converter operates in the discontinuous conduction more (DCM).
This paper presents the classification of some operation modes and the analysis by the state-space averaging method. The optimum circuit parameters for DCM operation are presented.
Steady-state characteristics of the converter are shown analytically and experimentally. From the results, it is clarified that the proposed converter is usable at the world-wide line voltage and is adapted to the international regulation of line-current harmonics.

   Three-Phase Parallel Active Power Filter with Direct Current Control
By David Nedeljkovic, Mitja Nemec, Vanja Ambrozic [View]
[Download]

Abstract: The paper presents an application of direct current control (DCC) method in a three-phase parallel active power filter. The power filter is employed to compensate fundamental reactive power and harmonic distortion of non-linear loads and due to its inverter-like topology with known parameters in filter branch, the predictive DCC method was implemented to reduce the filter’s commutation frequency. Consequently, the filter branch losses are decreased. Experimental setup based on a TMS320F2407A DSP was used to confirm the theoretical expectations.

   Two New High Power Factor Single-Phase Diode Rectifiers using Optimum Ripple-Power Conversion
By Tiiu Sakkos, Vello Sarv [View]
[Download]

Abstract: Two new schemes of low-distorting single-phase diode-bridge rectifiers with capacitive smoothing of the output voltage are proposed, analyzed, and verified. The harmonic distortion reduction proposed is based on optimum conversion of the ripple power to an additional quantity of dc power consumed in the load. To verify the feasibility and usefulness of the proposed improved rectifier circuits, they were tested by computer simulation. In addition, the corresponding laboratory rectifiers of 0.5 kW were built and tested. In proposed schemes, low values of the total harmonic distortion hold in wide range of the load variation.

EPE-PEMC 2006 - Topic 13: ACTIVE FILTERING AND UNITY POWER FACTOR CORRECTION CIRCUITS
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2006 - Conference > EPE-PEMC 2006 - Topic 13: ACTIVE FILTERING AND UNITY POWER FACTOR CORRECTION CIRCUITS
	[return to parent folder]

	A Current Source Active Power Filter Controlled by a Sliding Mode Approach By Vitor Fernao Pires, Jose Fernando Silva	[View] [Download]
Abstract: In this paper presents a current source active power filter controlled by a sliding mode approach is presented. The proposed control method is fast and robust and uses the sliding mode technique to generate áâ spacevector modulation. This allows forcing the input line currents to track the desired reference. With this control strategy the input currents of the active power filter are actively shaped, being possible to maintain the desired currents even with high ripple DC inductor current. Simulation results are presented and discussed. The obtained results show the effectiveness of the proposed control method.

	A Novel High Performance Current Control for Shunt Active Filters By Wanchak Lenwari, Mark Sumner, Pericle Zanchetta	[View] [Download]
Abstract: This paper proposes an accurate and simple current control for Shunt Active Filters (SAF) based on a P+Resonant compensator used in conjunction with traditional PI control. The proposed current control system is designed to operate with a single dq reference frame, synchronous with the 50 Hz supply voltage, for the compensation of 5th and 7th harmonics. Another major advantage of this strategy is the ability to eliminate the external disturbance from the 5th and 7th harmonic components caused by power supply. The principle of the proposed control method and the design procedure is here presented. Control stability under the variation of supply impedance is also investigated. Simulation and experimental results confirm the effectiveness of the suggested approach.

	A Simple Prediction based Current Reference Generation Method for a Four-Wire Active Power Filter By Sami Pettersson, Mikko Routimo, Mika Salo, Heikki Tuusa	[View] [Download]
Abstract: This paper presents a simple prediction based current reference generation method for a four-wire active power filter. In the steady state the current reference is generated according to data collected during the previous period. However, during the transient state of the load the prediction is no longer valid. Thus, in order to maintain the effective harmonic filtering performance a computational control delay compensation method is used instead. The proposed method is verified by experimental tests in a laboratory with a microcontroller controlled four-wire active power filter prototype.

	High Performance Predictive Current Control for Active Shunt Filters By Milijana Odavic, Pericle Zanchetta, Mark Sumner, Zeljko Jakopovic	[View] [Download]
Abstract: A discrete-time predictive current controller, for the application of active power filtering, is designed and analyzed in this paper. A modified algorithm of reference current prediction in the conditions of step change in amplitude and/or frequency is proposed. The theoretical analysis and the validity of the proposed method are verified by simulations. Comparison for the 5th and the 7th harmonic current control is made with the results achieved using synchronous PI plus lead compensator.

	Innovative Capacitive Decoupling for a Universal Power Conditioner based on Two-Shunt-VSITopology By Maria Stefania Carmeli, Francesco Castelli-Dezza, Gabrio Superti-Furga	[View] [Download]
Abstract: The present paper proposes a series capacitive decoupling for an innovative Universal Power Conditioner. Preliminarily a comparison with series inductive configuration is discussed. Control strategy is then proposed. The series capacitive configuration allows the same basic characteristics of the other one, obtaining the same dynamic performances and reference tracking precision. Moreover the decoupling capacitor has two important advantages: high frequency ripple is filtered and inductive reactive power of system inductors is balanced with a significant benefit in terms of power converter dimensioning .

	Shunt Active Filter for Voltage and Power Improvements within a Micro-grid By Fabio Carastro, Mark Sumner, Pericle Zanchetta	[View] [Download]
Abstract: This paper discusses the application of a shunt active power filter with energy storage, for voltage and power improvements within a local power supply network (micro-grid) in presence of distributed generation. Theoretical analysis investigates the control the shunt active power filter in response to voltage sag. The shunt active filter operates over a short period of time, and is coordinated with the response of a distributed generator with a slower dynamic response. Simulation results show that the proposed method makes it possible to regulate the grid voltage at its nominal value and also allows the power sharing between the active filter and the local synchronous generator.

	Speeding-Up of Dynamic States for Single-Phase Power Active Filter By Branislav Dobrucky, Robert Sul, Rastislav Pavlanin, Viktor Bobek, Igor Gerek	[View] [Download]
Abstract: The paper deals with the new method of analysis of single-phase power electronic systems. Using a new particular transform theory the ordinary single-phase system can be transformed into equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented by fictitious second phase so that both of them will create orthogonal and ortho-normal system, as is usual in three-phase systems. Application of above theory makes it possible to use complex methods of analysis as instantaneous reactive power method, which have not been usable for single-phase systems so far. Both, the active and reactive powers can be determined by this way. Practical application of the method is outlined for the case of reference current determination for single-phase power active filter. Three different ways of reference current determination are discussed results. The paper shows some examples of the experimental verification results, which proved an extremely fast response of the single- phase active filter with control algorithm, based on the described method.

	Steady-State Characteristics of a Novel PFC Converter Operating in DCM By Kentaro Fukushima, Takeshi Uematsu, Junichi Yamamoto, Katsuhiko Shimizu, Tamotsu Ninomiya	[View] [Download]
Abstract: This paper proposes a novel PFC converter topology. The novel PFC converter is a Buck-Boost type and its output voltage is suppressed up to 200V. As the result, the withstand voltage of any components can be reduced. That is possible to be higher efficiency and smaller size. Furthermore, the converter is easy to control when the converter operates in the discontinuous conduction more (DCM). This paper presents the classification of some operation modes and the analysis by the state-space averaging method. The optimum circuit parameters for DCM operation are presented. Steady-state characteristics of the converter are shown analytically and experimentally. From the results, it is clarified that the proposed converter is usable at the world-wide line voltage and is adapted to the international regulation of line-current harmonics.

	Three-Phase Parallel Active Power Filter with Direct Current Control By David Nedeljkovic, Mitja Nemec, Vanja Ambrozic	[View] [Download]
Abstract: The paper presents an application of direct current control (DCC) method in a three-phase parallel active power filter. The power filter is employed to compensate fundamental reactive power and harmonic distortion of non-linear loads and due to its inverter-like topology with known parameters in filter branch, the predictive DCC method was implemented to reduce the filter’s commutation frequency. Consequently, the filter branch losses are decreased. Experimental setup based on a TMS320F2407A DSP was used to confirm the theoretical expectations.

	Two New High Power Factor Single-Phase Diode Rectifiers using Optimum Ripple-Power Conversion By Tiiu Sakkos, Vello Sarv	[View] [Download]
Abstract: Two new schemes of low-distorting single-phase diode-bridge rectifiers with capacitive smoothing of the output voltage are proposed, analyzed, and verified. The harmonic distortion reduction proposed is based on optimum conversion of the ripple power to an additional quantity of dc power consumed in the load. To verify the feasibility and usefulness of the proposed improved rectifier circuits, they were tested by computer simulation. In addition, the corresponding laboratory rectifiers of 0.5 kW were built and tested. In proposed schemes, low values of the total harmonic distortion hold in wide range of the load variation.