Angebote zu "Shunt" (17 Treffer)

Kategorien

Shops

Performance Analysis of SAPF for Current Harmon...
35,90 € *
ggf. zzgl. Versand

The harmonics and reactive power cause a number of undesirable effects like heating, equipment damage and Electromagnetic Interference effects in the power system. The conventional method to mitigate the harmonics and reactive power compensation is by using passive LC filters but this method has drawbacks like large size, resonance problem and fixed compensation behavior etc, Subsequently, the active power filter (APF) comes in to the picture, which gives promising solution to compensate harmonics and reactive power simultaneously by using suitable control algorithms. Different APF topology has proposed by many authors, such as series, shunt and hybrid type and these may be based on current source or voltage source. Series APF is used to compensate the voltage harmonics and shunt type for current harmonics.

Anbieter: Dodax
Stand: 28.01.2020
Zum Angebot
Performance Analysis of SAPF for Current Harmon...
37,00 € *
ggf. zzgl. Versand

The harmonics and reactive power cause a number of undesirable effects like heating, equipment damage and Electromagnetic Interference effects in the power system. The conventional method to mitigate the harmonics and reactive power compensation is by using passive LC filters but this method has drawbacks like large size, resonance problem and fixed compensation behavior etc, Subsequently, the active power filter (APF) comes in to the picture, which gives promising solution to compensate harmonics and reactive power simultaneously by using suitable control algorithms. Different APF topology has proposed by many authors, such as series, shunt and hybrid type and these may be based on current source or voltage source. Series APF is used to compensate the voltage harmonics and shunt type for current harmonics.

Anbieter: Dodax AT
Stand: 28.01.2020
Zum Angebot
Mitigation of Load Harmonics from Grid Connecte...
55,90 € *
ggf. zzgl. Versand

An effective technique to mitigate harmonics from grid connected wind turbines. The proposed method comprised of shunt active power filter (APF). The switching of APF is carried out by hysteresis band current controller. In order to validate the system performance, two reference current generation techniques have been used (pq theory and SRF theory). The results achieved from SRF theory were satisfied and more accurate as compared to pq theory. The proposed controller mitigates the harmonics and satisfies the international harmonic standard set in IEEE-519.

Anbieter: Dodax
Stand: 28.01.2020
Zum Angebot
Mitigation of Load Harmonics from Grid Connecte...
57,50 € *
ggf. zzgl. Versand

An effective technique to mitigate harmonics from grid connected wind turbines. The proposed method comprised of shunt active power filter (APF). The switching of APF is carried out by hysteresis band current controller. In order to validate the system performance, two reference current generation techniques have been used (pq theory and SRF theory). The results achieved from SRF theory were satisfied and more accurate as compared to pq theory. The proposed controller mitigates the harmonics and satisfies the international harmonic standard set in IEEE-519.

Anbieter: Dodax AT
Stand: 28.01.2020
Zum Angebot
Hybrid Active Power Filter
68,00 € *
ggf. zzgl. Versand

Recent proliferation of non-linear loads such as adjustable-speed motor drives, power supplies and inverters have raised serious concerns on the quality and reliability of electrical distribution networks. These loads draw excessive harmonic currents which interact with a wide range of power system components, causing significant deterioration in the power quality. Although traditional passive filtering has been commonly used to mitigate these problems, recent advances in power electronic converters have sparked the interest in active power filter (APF) approach. This book describes the design, analysis and implementation of a hybrid APF connected to a photovoltaic system. The integration improves the harmonic filtering performance of a basic shunt APF while simultaneously supplying power from the photovoltaic array to the load. The compensation current reference for the APF is derived from the extension instantaneous reactive-power theorem. It simplifies the current reference estimation, leading to a more efficient implementation using digital signal processor.

Anbieter: Dodax
Stand: 28.01.2020
Zum Angebot
Hybrid Active Power Filter
70,00 € *
ggf. zzgl. Versand

Recent proliferation of non-linear loads such as adjustable-speed motor drives, power supplies and inverters have raised serious concerns on the quality and reliability of electrical distribution networks. These loads draw excessive harmonic currents which interact with a wide range of power system components, causing significant deterioration in the power quality. Although traditional passive filtering has been commonly used to mitigate these problems, recent advances in power electronic converters have sparked the interest in active power filter (APF) approach. This book describes the design, analysis and implementation of a hybrid APF connected to a photovoltaic system. The integration improves the harmonic filtering performance of a basic shunt APF while simultaneously supplying power from the photovoltaic array to the load. The compensation current reference for the APF is derived from the extension instantaneous reactive-power theorem. It simplifies the current reference estimation, leading to a more efficient implementation using digital signal processor.

Anbieter: Dodax AT
Stand: 28.01.2020
Zum Angebot
Control Strategies of Different Loads to Enhanc...
79,10 € *
ggf. zzgl. Versand

The proposed shunt active filter compensate for balance and unbalanced nonlinear load currents, adapt itself to compensate variations in nonlinear load currents, and correct power factor of the supply side near to unity. Proposed Active Power Filter (APF) topology limits %THD of source current under limits of IEEE-519 standard, and also have been observed that reactive power compensation has improved leading to power factor improvement. After checking the performance of the system for various load conditions with the above said list of control strategies, the hybrid filter / control technique is observed as more adoptable for the system in order to ensure the improved power quality. The validity of the presented controllers was proved by simulation of a three phase four wire test system under balanced, unbalanced and variable loading conditions. Finally all the control strategies are compared and the results are found to be quite satisfactory to mitigate harmonic Distortions, reactive power compensation and power factor correction.

Anbieter: Dodax AT
Stand: 28.01.2020
Zum Angebot
Control Strategies of Different Loads to Enhanc...
76,90 € *
ggf. zzgl. Versand

The proposed shunt active filter compensate for balance and unbalanced nonlinear load currents, adapt itself to compensate variations in nonlinear load currents, and correct power factor of the supply side near to unity. Proposed Active Power Filter (APF) topology limits %THD of source current under limits of IEEE-519 standard, and also have been observed that reactive power compensation has improved leading to power factor improvement. After checking the performance of the system for various load conditions with the above said list of control strategies, the hybrid filter / control technique is observed as more adoptable for the system in order to ensure the improved power quality. The validity of the presented controllers was proved by simulation of a three phase four wire test system under balanced, unbalanced and variable loading conditions. Finally all the control strategies are compared and the results are found to be quite satisfactory to mitigate harmonic Distortions, reactive power compensation and power factor correction.

Anbieter: Dodax
Stand: 28.01.2020
Zum Angebot
Modelling and Simulation of SRF Based 3 Phase 3...
50,40 € *
ggf. zzgl. Versand

The presence of harmonics in power lines results in greater power losses in the distribution system, interference problems in communication systems and, sometimes, in operation failures of electronic equipments. Active filters are special equipments that use power electronic converters to compensate for current and/or voltage harmonics originated by non-linear loads, or to avoid that harmonic voltages might be applied to sensitive loads. In this book, Synchronous Reference Frame (SRF) theory is implemented for the generation of reference current signals for the controller. This book also illustrates how the functional definition of a switching converter can be used to model active filters. This book presents the comparative performance evaluation of the fixed hysteresis band current controller and the adaptive hysteresis band current controller for a three phase three wire shunt active power filter and inspects the effectiveness of the filter in harmonics currents suppression for both cases.

Anbieter: Dodax AT
Stand: 28.01.2020
Zum Angebot