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Single-phase power active filter using instantaneous reactive power theory - theoretical approach

Altus J., Michalik J., Dobrucky B., Viet L.

Zeszyty Naukowe. Elektryka / Politechnika Opolska

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2005

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Vol. 299, z. 55

7-16

EN

The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. By using a new particular transformation theory, the ordinary single-phase system can be transformed into an 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 an orthogonal system, as is usual in three-phase systems, in spite of [1]. Application of the above theory makes it possible to use complex methods of analysis as the 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. The paper shows some examples of the simulation verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single - phase active parallel filter, power rate of 25 kVA and controlled by 32 - bit floating point digital signal processor TMS 320C31.

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Single-phase power active filter using instantaneous reactive power theory : theoretical and practical approach

Altus J., Michalik J., Dobrucky B., Viet L. H.

Electrical Power Quality and Utilisation. Journal

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2005

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Vol. 11, nr 1

33-38

EN

The paper deals with the new method of analysis, synthesis and experimentation of single-phase power active filters. By using a new particular transformation theory, the ordinary single-phase system can be transformed into an equivalent two-axes orthogonal one. The new original thought is based on the idea that ordinary single-phase quantity can be complemented bv fictitious second phase so that both of them will create an orthogonal system, as is usual in three-phase systems, in spite of [1]. Application of the above theory makes it possible to use complex methods of analysis as the 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. The paper shows some examples of the simu-lution verification results, which proved a high accuracy and extremely fast response of the single-phase active filter with control, based on the introduced method. The effectiveness of proposed control algorithm is also demonstrated by experimental results, which were carried out on the single - phase active parallel filter, power rate of 25 kVA and controlled by 32 - bit Heating point digital signal processor TMS 320C31.

3

Rozwiązanie konstrukcyjne momentomierza do laboratoryjnych pomiarów mocy mieszania

Wesołowski P., Stolpe G.

Inżynieria Chemiczna i Procesowa

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2001

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T. 22, z. 3E

1471--1476

PL

W pracy zaprezentowano własne rozwiązanie konstrukcyjne momentomierza, w który wyposażono nowe uniwersalne stanowisko laboratoryjne do wyznaczania charakterystyk mocy mieszania w układach jedno- i dwufazowych. Proponowane rozwiązanie pozwala wyeliminować klasyczne połączenia sprzęgłowe wału momentomierza z wałami mieszadła i silnika. Prosta tulejowa konstrukcja, ogranicza problem drgań giętnych układu i zdecydowanie zmniejsza gabaryty urządzenia pomiarowego.

EN

New universal installation to investigation of the power characteristic of the mixing in single- and two-phase systems has been presented. The original constructional solution of the torque sensor has been described. The both classical clutches: between shaft of the motor and torque measuring instruments and between torque sensor and the impeller shaft have been eliminated. The simple construction as the hollow tube sensor is small and keeps to a minimum charring of the shaft.