2 edition of An Adaptive Hysteresis Band Current Controlled Shunt Active Power Filter found in the catalog.
An Adaptive Hysteresis Band Current Controlled Shunt Active Power Filter
in each phase. The losses in shunt active power filter is thus taken care of by three phase source and dc bus capacitor voltage becomes a self supporting one. Conventional Hysteresis Controller with Adaptive Band: The purpose of the current controller is to control the actual filter current by forcing it to follow a reference. Shunt Active Power Filter (SAPF) model. The active and passive components are combined together to form active filters and these filters need an external source. The passive components are R,L,C and the active component is a removed and a capacitor is connected on the supply side of .
Hysteresis Current Control (HCC) is widely used due to its simplicity in implementation, fast and accurate response. However, the main issue is its variable switching frequency which leads to extraswitching losses and injecting high-frequency harmonics into the system current. To solve this problem, adaptive hysteresis current control (AHCC) has been introduced which produces hysteresis. Three hysteresis band current controllers are employed to derive switching signals to the shunt Active Power Filter. A three-phase diode rectifier with resistive-inductive loading is employed.
CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): Abstract—This paper presents a method for the harmonic and the reactive power compensation with an adaptive hysteresis band current controller and a control algorithm for hybrid shunt active power filter (HSAPF) to eliminate the harmonic and compensate the reactive power in threephase thyristor bridge rectifier. Double-Band Hysteresis Current Control Method for Three-Phase Shunt Active Power Filters Farshid Allahakbari Submitted to the Institute of Graduate Studies and Research in partial fulfillment of the requirements for the Degree of Master of Science in Electrical and Electronic Engineering Eastern Mediterranean University August
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The hysteresis band current control technique has proven to be most suitable for all the applications of current controlled voltage source inverters in active power filters.
The hysteresis band current control is characterized by unconditioned stability, very Cited by: Power Distribution system is polluted by harmonic and reactive power disturbances due to the large usages of non-linear loads (Computers, Laser printers, SMPS, Rectifier etc.).
Harmonics cause a number of undesirable effects like heating, equipment damage and Electromagnetic Interference effects in the power system. Active power filter (APF) or Active power line conditioner (APLC) is a. This paper presents a shunt active power filter for power quality enhancement in terms of harmonics and reactive-power compensation due to the non-linear l Adaptive-Hysteresis Current Controller based active power filter for power quality enhancement - IET Conference Publication Skip to Cited by: 7.
Abstract Conventional hysteresis current controllers have the disadvantage of a variable switching frequency. This paper proposes a fuzzy hysteresis band technique for the current control for shunt active power filter (SAPF).
An active harmonic filter is used to eliminate current harmonics caused by nonlinear loads. Shunt active power filters (APF) are widely used in power systems to eliminate the current harmonics and to compensate reactive power due to their accurate and fast operation.
In this paper the instantaneous power theory is used to extract the harmonic components of system current. Then fixed-band hysteresis current control is explained. Generation of reference current constitutes an important part in the control of active power filter, so a new neural identification scheme for the current harmonic extraction is proposed, that is, the fundamental positive and negative sequence components of non-linear load current are extracted directly by adaptive linear neural filter to generate reference current under non-ideal conditions.
Rathika and D. Devaraj, "A Novel Fuzzy—Adaptive Hysteresis Controller Based Three Phase Four Wire-Four Leg Shunt Active Filter for Harmonic and Reactive Power Compensation," Energy and Power Engineering, Vol. 3 No. 4,pp. doi: /epe Improved shunt APF based on using adaptive RBF neural network and modified hysteresis current control In this paper, a new combination is proposed to control shunt active power filters (APF).
The recommended system has better specifications in comparison with other control methods. A novel hysteresis current control strategy based on voltage space vector is proposed for shunt active power filter. The differential relationship between reference voltage and current is then calculated discretely to determine the location region of reference voltage vector.
Suresh Y, Panda AK, Suresh M () Real time implementation of adaptive fuzzy hysteresis-band current control technique for shunt active power filter. IET Power. controlled shunt active power filter capable of reducing the total harmonic distortion is The fuzzy-adaptive hysteresis band current controller changes the hysteresis bandwidth according to the supply voltage and slope of the reference compensator current wave.
A fuzzy logic-based controller. Abstract This paper proposes an adaptive current control method for Hybrid Active Power Filter (HAPF). It consists of a fuzzy-neural controller, identification and prediction model and cost function.
The fuzzy-neural controller parameters are adjusted according to the cost function minimum criteria. An Adaptive hysteresis band calculator varies the hysteresis band width, HB, according to diref*(t)/dt and Vdc and supply voltage Vs.
This controller ensures least variation in device switching frequency by maintaining the merits of the basic technique.
KEYWORDS: Active Power Filters, Hysteresis Band Current Control method,Shunt Active Power. Shunt active power filters are employed to suppress the current harmonics and reduce the total harmonic distortion (THD). The voltage source inverter (VSI) is the core of an active power filter.
The hysteresis current control is a method of controlling the VSI. Hysteresis control can be either of fixed band type or adaptive band type. This paper presents a shunt single phase active power filter (APF) for harmonic and reactive power compensation. A simple method, using sampling and integration has been proposed for APF reference current generation.
This method simplifies the calculation algorithm. A high performance adaptive hysteresis band current controller tracks the reference current. Adaptive hysteresis band controlled grid connected PV system with active filter function Abstract: This paper presents three-phase grid connected photovoltaic (PV) system that not only can inject active power to the grid but also can compensate harmonics and reactive power of nonlinear loads as a shunt active filter.
The adaptive hysteresis band current controller, proposed by Bose [An adaptive hysteresis band current control technique of a voltage feed PWM inverter for machine drive system, IEEE Trans. Ind. The quality of the current waveform generated by a current controlled, voltage source shunt active power filter depends basically on three factors: (i) The reference signal being generated; (ii.
inverters in shunt active power ﬁlter applications when applied to three-phase isolated neutral point (INP) sys-tems. The proposed techniques is developed based on two recognized modulation methods, space-vector pulsewidth modulation and adaptive hysteresis-band current control. The proposed technique consists of two alternating adap.
Keywords: Adaptive hysteresis band current controller, Compensation reference current signal, Phase lock loop control, Shunt active power filter, Total harmonic distortion. Introduction The rapid increase of industrial infrastructure, which utilizes power electronic devices, increases the non-linear load in power supply network.
The hysteresis band current control for active power filter is used to generate the switching pattern of the inverter. There are various current control methods proposed for active power filter configurations; but the hysteresis current control method is proven to be the best among other current control methods, because of quick current.shows the performance of shunt active power filter under restive rectifier load.
In this case the before the insertion of the shunt active power filter, Total Harmonic Distortion (THD) of source current was % and after the insertion it comes down up to %. Similarly for inductive rectifier load, THD.CONSTANT FREQUENCY HYSTERESIS CURRENT CONTROL OF SHUNT ACTIVE FILTER The active filters are used to suppress harmonic distortion in power system.
The active filters use power electronic converters in order to inject harmonic components to the system that cancel out the harmonics in the supply current caused by non-linear loads.