Apparent power decompositions of three-phase power supply system to develop control algorithms of shunt active filter

Artemenko, М.Yu.; Polishchuk, S.Y.; Mykhalskyi, V.М.; Shapoval, I.A.

doi:10.1109/ukrcon.2017.8100537

“…In Fig. 2 dotted line shows the level of reduction in the efficiency of the power supply system for the load with a power factor 0.5 Λ = built according to (10).…”

Section: F T Imentioning

confidence: 99%

“…From (2), it follows that in the case of asymmetric non-sinusoidal voltages at PCC, the formation of the power system active current is accompanied by the energy consumption of the multiphase source higher harmonics and negative and zero sequences symmetric components of the network frequency, which the standard IEEE Std 1459-2010 [2] recommends avoiding. The paper [10] presents algorithms of active filtration, forming the vectors of source currents following the recommended by this standard of apparent power decompositions for permissible quadratic components. In particular, the transfer of energy to the load at the frequency of the main harmonics by the positive sequence component of the phase voltage vector…”

Section: Figmentioning

confidence: 99%

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The Efficiency Improvement of a Multiphase Power Supply System by Using Energy-Saving Shunt Active Filtration Strategies

Artemenko

¹

,

Chopyk

²

,

Mykhalskyi

³

et al. 2022

Teh. elektrodin.

0

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Minimizing energy losses and increasing the efficiency of a multiphase power supply system by increasing the load power factor using an active shunt filter (SAF) is analyzed. Two SAF control strategies are presented, which provide the maximum efficiency at close to the unit value of power factor or at sinusoidal symmetric currents of the power supply system with any number of phases for non-sinusoidal and asymmetric sources, nonlinear and asymmetric load, and the arbitrary ratio of the resistance of linear and neutral wires. It is shown that the use of direct information about the EMF of a multiphase source as a reference vector of the desired transmission line current does not improve the achieved result of efficiency maximization. A virtual experiment obtained and verified the formula for calculating the efficiency of a multiphase power supply system with an arbitrary load in the form of dependence on load factor and power factor. The power supply system's power factor was determined and experimentally confirmed when applying the SAF strategy to form sinusoidal symmetric currents of a multiphase source. References 10, figures 5.

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“…In the case of compensation of inactive current by means of filtration, we will have a decrease in the power loss P  in the transmission line, which can be characterized [10] by the coefficient of gain on the power loss:…”

Section: Vectors Of Active Currents In Phase Coordinatesmentioning

confidence: 99%

“…The transition from two-coordinate vectors in symmetric coordinates to three-coordinate complex vectors in phase coordinates is carried out by multiplying on the matrix . (10) Consumption from an asymmetric sinusoidal Fryze current source does not eliminate the pulsations of active power [5]. Its instantaneous value can be determined [2] using the vector…”

Section: Vectors Of Active Currents In Phase Coordinatesmentioning

confidence: 99%

Сurrent Filtering in a Three-Phase Three-Wire Power System at Asymmetric Sinusoidal Voltages

Artemenko¹,

Batrak²,

Polishchuk³

2018

Elektroteh. elektromeh.

Self Cite

1

0

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Purpose. Investigation of the optimal current distribution between source, shunt active filter and reactive compensator of a three-phase three-wire system that provides consumption of a sinusoidal symmetric current under asymmetric source voltages with minimal power losses was provided. Methodology. The tasks were solved by conducting theoretical and experimental studies. The main provisions of the theory of electrical circuits, the apparatus of mathematical analysis, methods for solving linear differential and algebraic equations, elements of matrix and complex calculus and vector algebra are used. During the development, modern methods and software of computer simulation of electrical engineering complexes and dynamic systems were applied: Matlab-Simulink, MATHCAD. Originality. The principle of compensating current distribution between PAF and reactive compensator of a three-phase three-wire power system with asymmetric sinusoidal voltage was proposed at which the input current is equal to the positive-sequence active current and rms value of PAF current is minimal. The feasibility to compensate the inactive sinusoidal Fryze current by reactive elements under arbitrary combination of load and source parameters was proved and expression for direct calculation of the reactive compensator parameters for generation of inactive Fryze current in the source unbalanced mode was obtained. Practical value. The simulative example for transmission line load showed that combined application of PAF and reactive compensator with the specified distribution of compensating currents ensured a reduction of power losses in 3.273 times and rms value of the SAF current is 12.9 % of rms value total compensation current. References 10, tables 1, figures 2. Key words: active and inactive Fryze current, asymmetrical voltage and load, reactive compensator, symmetrical components. Рассмотрены принципы активной фильтрации тока в трехфазной трехпроводной системе электропитания при несимметричном синусоидальном источнике питания, удовлетворяющие требованиям стандарта IEEE Std.1459-2010. Показаны преимущества формирования синусоидального симметричного входного тока при параллельном подключении активного фильтра и реактивного компенсатора. Доказана возможность компенсации неактивного синусоидального тока Фризе реактивными элементами при произвольной комбинации параметров нагрузки и источника. Получена формула прямого расчета параметров реактивного компенсатора для генерации неактивного тока Фризе в несимметричном режиме источника питания. Приводятся результаты численного моделирования. Библ. 10, табл. 1, рис. 2. Ключевые слова: активный и неактивный ток Фризе, несимметричное напряжение и нагрузка, реактивный компенсатор, симметричные составляющие.

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Current Filtering in Three-Phase Three-Wire Power System at Asymmetric Sinusoidal Voltages

Artemenko

¹

,

Batrak

²

,

Polishchuk

³

2018

2018 IEEE 38th International Conference on Electronics and Nanotechnology (ELNANO)

3

0

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Purpose. Investigation of the optimal current distribution between source, shunt active filter and reactive compensator of a three-phase three-wire system that provides consumption of a sinusoidal symmetric current under asymmetric source voltages with minimal power losses was provided. Methodology. The tasks were solved by conducting theoretical and experimental studies. The main provisions of the theory of electrical circuits, the apparatus of mathematical analysis, methods for solving linear differential and algebraic equations, elements of matrix and complex calculus and vector algebra are used. During the development, modern methods and software of computer simulation of electrical engineering complexes and dynamic systems were applied: Matlab-Simulink, MATHCAD. Originality. The principle of compensating current distribution between PAF and reactive compensator of a three-phase three-wire power system with asymmetric sinusoidal voltage was proposed at which the input current is equal to the positive-sequence active current and rms value of PAF current is minimal. The feasibility to compensate the inactive sinusoidal Fryze current by reactive elements under arbitrary combination of load and source parameters was proved and expression for direct calculation of the reactive compensator parameters for generation of inactive Fryze current in the source unbalanced mode was obtained. Practical value. The simulative example for transmission line load showed that combined application of PAF and reactive compensator with the specified distribution of compensating currents ensured a reduction of power losses in 3.273 times and rms value of the SAF current is 12.9 % of rms value total compensation current. References 10, tables 1, figures 2. Key words: active and inactive Fryze current, asymmetrical voltage and load, reactive compensator, symmetrical components. Рассмотрены принципы активной фильтрации тока в трехфазной трехпроводной системе электропитания при несимметричном синусоидальном источнике питания, удовлетворяющие требованиям стандарта IEEE Std.1459-2010. Показаны преимущества формирования синусоидального симметричного входного тока при параллельном подключении активного фильтра и реактивного компенсатора. Доказана возможность компенсации неактивного синусоидального тока Фризе реактивными элементами при произвольной комбинации параметров нагрузки и источника. Получена формула прямого расчета параметров реактивного компенсатора для генерации неактивного тока Фризе в несимметричном режиме источника питания. Приводятся результаты численного моделирования. Библ. 10, табл. 1, рис. 2. Ключевые слова: активный и неактивный ток Фризе, несимметричное напряжение и нагрузка, реактивный компенсатор, симметричные составляющие.

show abstract

Apparent power decompositions of three-phase power supply system to develop control algorithms of shunt active filter

Cited by 4 publications

References 6 publications

The Efficiency Improvement of a Multiphase Power Supply System by Using Energy-Saving Shunt Active Filtration Strategies

The Efficiency Improvement of a Multiphase Power Supply System by Using Energy-Saving Shunt Active Filtration Strategies

Сurrent Filtering in a Three-Phase Three-Wire Power System at Asymmetric Sinusoidal Voltages

Current Filtering in Three-Phase Three-Wire Power System at Asymmetric Sinusoidal Voltages

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