EPE Association: EPE-PEMC 2000 - Topic 06a: Active Power Filters and Harmonic Compensators

EPE-PEMC 2000 - Topic 06a: Active Power Filters and Harmonic Compensators
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2000 - Conference > EPE-PEMC 2000 - Topic 06: Power Electronics in Electrical Energy Generation, Transmission and Distribution > EPE-PEMC 2000 - Topic 06a: Active Power Filters and Harmonic Compensators

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   A Novel 3-Phase Hybrid Harmonic and Reactive Power Compensator
By Singh P.*, Pacas J.M., Bhatia C.M.** [View]
[Download]

Abstract: The application of shunt active filters for the harmonic and reactive power compensation in the high power range is mainly restricted because of their low efficiency and the high cost of inverters with high switching frequency. Moreover, the compensation effect is completely lost in case of internal fault in active filter. Hybrid active filters as the combination of a low power PWM inverter and passive filters have been researched and developed to overcome the limitations of shunt active filter. However, they do not have control over fundamental reactive power. This paper proposes a new hybrid active compensator for harmonic and fundamental reactive current compensation, which consists of two small-rated active filters and one bank of passive filters. Simulation and experimental results are presented to show the advantages of the proposed compensator topology.

   Compensation of Harmonic Voltage Sources by Using Parallel and Series Active Filters
By Valouch V. [View]
[Download]

Abstract: The paper compares the use of parallel and series active filters for the harmonic compensation in case of a load acting as a harmonic voltage source, which is the case of a diode rectifier with the dc voltage output. The analysis has shown that the series active filter is more effective then the parallel one, because the harmonic current injected by the parallel active filter and also that caused by the distortion of the supply voltage flows into the load. Hence both the ac load current harmonics and dc voltage ripple are higher and the mains current involves more harmonics than in case of using the series active filter.

   Energetic Study of a Shunt Active Conditioner Compensating Current Harmonics, Power Factor and Unbalanced Current
By Alali M.A.E., Saadate S., Chapuis Y.A.*, Braun F.* [View]
[Download]

Abstract: This paper deals with the main perturbations such as harmonic pollution, reactive consumption and unbalanced current in the electrical systems. The shunt active conditioner is able to compensate these currents near the load even under a disturbed voltage network, leaving the fundamental current circulates in the network. Many papers discussing about active filtering principle, control approaches and FACTS applications have been already published. They rarely give a precise evaluation, in term of energetic consideration, of the active conditioner. In this paper, through the simulations made by SABER numerical code, an energetic study is presented when the compensation of one or a combination of these three currents is performed.

   Integrated Reactive Power Compensation and Solid State Transfer Switch for Power Applications
By Blasco-Giménez R., Alamar J., Montenegro A., Peña R.*, Roldán C., Álvarez C. [View]
[Download]

Abstract: This paper presents an application for compensating reactive power and mitigate effects of both voltage sags and even complete voltage outages. Line current harmonic compensation is carried out by using a standard parallel configuration while outage and sag protection is attained by changing the control strategy of the inverter, and using it to switch the load to an alternative feeder. This paper deals with the different control strategies used for both reactive power harmonic control and voltage regulation. Results from a low voltage 22kW prototype are shown, however, the same principles and control strategies can readily be used to implement a medium voltage integrated harmonic compensator and solid state transfer switch.

   Main Circuit and Control Strategy for Three-Phase Four-Wire Shunt Active Power Filter
By Zhuo F., Yang J., Hu J., Wang Z. [View]
[Download]

Abstract: It is regarded that how to construct an active power filter to suppress the harmonics in three-phase four-wire system. In this paper two type of main circuits and control strategy for active power filter are introduced. The results of experiment and simulation indicate that harmonics, negative sequence and zero sequence current in three phase four wire system could be compensated by both two types of main circuits.

   Pure Sine Wave Reactive Power Generator
By Koczara W., Matraszek J. [View]
[Download]

Abstract: New method reactive power compensation is presented. True sine wave generator is connected to supply system via inductance. As result of difference in amplitude between the supply and compensator voltage is produced a reactive current. There are possibly two operating modes leading and lagging. This compensator does not produces another distortion to Supply System. Only smoothed sinusoidal voltage and current is provided. The paper presents concept and theory of reactive power generator produced by an active filer operated as voltage dc/ac converter.

   The Study on Active Power Filter for HVDC System
By Xiao G., Liu J., Yang J., Wang Z. [View]
[Download]

Abstract: The main circuit configuration of dc active power filter to HVDC system and its basic concept for suppression harmonics are analyzed in detail in this paper, and on the basis of these a experimental device is developed. The results show that the hybrid filter consisting of passive filter and active filter can further increase the filter performance on the dc side in HVDC system.

   Universal Power Quality System - an Extension to Universal Power Quality Conditioner
By Graovac D., Katiæ V., Rufer A.* [View]
[Download]

Abstract: The aim of this paper is to present a universal power quality conditioning system (UPQS) which consists of a unified power quality conditioner (UPQC) extended by adding a shunt active filter at the load side. Such system has higher harmonic compensation characteristic, since there are no problems associated with passive filter operation. Its main purpose is to compensate for supply voltage and load current imperfections, such as: sags, swells, interruptions, imbalance, flicker, harmonics, reactive currents and current unbalance. After determination of classical active filtering drawbacks, UPQS converter and control analysis is presented, together with results showing the UPQS modes of operation.

EPE-PEMC 2000 - Topic 06a: Active Power Filters and Harmonic Compensators
You are here: EPE Documents > 04 - EPE-PEMC Conference Proceedings > EPE-PEMC 2000 - Conference > EPE-PEMC 2000 - Topic 06: Power Electronics in Electrical Energy Generation, Transmission and Distribution > EPE-PEMC 2000 - Topic 06a: Active Power Filters and Harmonic Compensators
	[return to parent folder]

	A Novel 3-Phase Hybrid Harmonic and Reactive Power Compensator By Singh P., Pacas J.M., Bhatia C.M.*	[View] [Download]
Abstract: The application of shunt active filters for the harmonic and reactive power compensation in the high power range is mainly restricted because of their low efficiency and the high cost of inverters with high switching frequency. Moreover, the compensation effect is completely lost in case of internal fault in active filter. Hybrid active filters as the combination of a low power PWM inverter and passive filters have been researched and developed to overcome the limitations of shunt active filter. However, they do not have control over fundamental reactive power. This paper proposes a new hybrid active compensator for harmonic and fundamental reactive current compensation, which consists of two small-rated active filters and one bank of passive filters. Simulation and experimental results are presented to show the advantages of the proposed compensator topology.

	Compensation of Harmonic Voltage Sources by Using Parallel and Series Active Filters By Valouch V.	[View] [Download]
Abstract: The paper compares the use of parallel and series active filters for the harmonic compensation in case of a load acting as a harmonic voltage source, which is the case of a diode rectifier with the dc voltage output. The analysis has shown that the series active filter is more effective then the parallel one, because the harmonic current injected by the parallel active filter and also that caused by the distortion of the supply voltage flows into the load. Hence both the ac load current harmonics and dc voltage ripple are higher and the mains current involves more harmonics than in case of using the series active filter.

	Energetic Study of a Shunt Active Conditioner Compensating Current Harmonics, Power Factor and Unbalanced Current By Alali M.A.E., Saadate S., Chapuis Y.A., Braun F.	[View] [Download]
Abstract: This paper deals with the main perturbations such as harmonic pollution, reactive consumption and unbalanced current in the electrical systems. The shunt active conditioner is able to compensate these currents near the load even under a disturbed voltage network, leaving the fundamental current circulates in the network. Many papers discussing about active filtering principle, control approaches and FACTS applications have been already published. They rarely give a precise evaluation, in term of energetic consideration, of the active conditioner. In this paper, through the simulations made by SABER numerical code, an energetic study is presented when the compensation of one or a combination of these three currents is performed.

	Integrated Reactive Power Compensation and Solid State Transfer Switch for Power Applications By Blasco-Giménez R., Alamar J., Montenegro A., Peña R., Roldán C., Álvarez C.*	[View] [Download]
Abstract: This paper presents an application for compensating reactive power and mitigate effects of both voltage sags and even complete voltage outages. Line current harmonic compensation is carried out by using a standard parallel configuration while outage and sag protection is attained by changing the control strategy of the inverter, and using it to switch the load to an alternative feeder. This paper deals with the different control strategies used for both reactive power harmonic control and voltage regulation. Results from a low voltage 22kW prototype are shown, however, the same principles and control strategies can readily be used to implement a medium voltage integrated harmonic compensator and solid state transfer switch.

	Main Circuit and Control Strategy for Three-Phase Four-Wire Shunt Active Power Filter By Zhuo F., Yang J., Hu J., Wang Z.	[View] [Download]
Abstract: It is regarded that how to construct an active power filter to suppress the harmonics in three-phase four-wire system. In this paper two type of main circuits and control strategy for active power filter are introduced. The results of experiment and simulation indicate that harmonics, negative sequence and zero sequence current in three phase four wire system could be compensated by both two types of main circuits.

	Pure Sine Wave Reactive Power Generator By Koczara W., Matraszek J.	[View] [Download]
Abstract: New method reactive power compensation is presented. True sine wave generator is connected to supply system via inductance. As result of difference in amplitude between the supply and compensator voltage is produced a reactive current. There are possibly two operating modes leading and lagging. This compensator does not produces another distortion to Supply System. Only smoothed sinusoidal voltage and current is provided. The paper presents concept and theory of reactive power generator produced by an active filer operated as voltage dc/ac converter.

	The Study on Active Power Filter for HVDC System By Xiao G., Liu J., Yang J., Wang Z.	[View] [Download]
Abstract: The main circuit configuration of dc active power filter to HVDC system and its basic concept for suppression harmonics are analyzed in detail in this paper, and on the basis of these a experimental device is developed. The results show that the hybrid filter consisting of passive filter and active filter can further increase the filter performance on the dc side in HVDC system.

	Universal Power Quality System - an Extension to Universal Power Quality Conditioner By Graovac D., Katiæ V., Rufer A.*	[View] [Download]
Abstract: The aim of this paper is to present a universal power quality conditioning system (UPQS) which consists of a unified power quality conditioner (UPQC) extended by adding a shunt active filter at the load side. Such system has higher harmonic compensation characteristic, since there are no problems associated with passive filter operation. Its main purpose is to compensate for supply voltage and load current imperfections, such as: sags, swells, interruptions, imbalance, flicker, harmonics, reactive currents and current unbalance. After determination of classical active filtering drawbacks, UPQS converter and control analysis is presented, together with results showing the UPQS modes of operation.