维也纳整流器分析_图文

1、 of the above mathematical equations describing the Vienna rectifier DC output functionality. 6. RESULTS O. SIMULATION INVESTIGATION O. VIENNA RECTI.IER Vienna rectifier simulation scheme for the TCAD program is presented in the fig.9. Simulation was performed for the next conditions: Uf = 230V, f =

2、 50Hz, Ls = 85mH, Rs = 0.5W, S = 3kVA, C+ = C = 1100m., R0 = 423W, L0 = 0H, E = 0V, fPWM = 10kHz . The time plots of the phase currents, the phase voltage and the output regulator signal for different values of phase displacement angle are presented in the figures from10to15. The voltage Ua is multi

3、plied by scale factor of 0,03. It can be see from the previous illustrations of the simulations that Vienna rectifier functions properly for the values of the phase displacement angle js(1 from the closely restricted range. .or the AC side rectifier input (behind the input magnetic coil this range i

4、s done by equation(15. The phase displacement angle j(1 in the case of the input voltage of the overall converter (before the magnetic coil differs from the value of the angle js(1 because of the reactive power of input magnetic coil. .or this reason, the rectifier displacement angle j(1 may have la

5、rger value than . It must have larger value 6 than on the other hand. In the opposite case the current 6 shape will be distorted from sinusoidal. .ig.8. Vienna rectifiers DC output circuits block scheme udc = udc + + udc (29 Generally the rectifier DC output current is a non-linear function of the r

6、ectifier DC output voltage (30. The parameters of the load circuit R0, L0, E are theparameters of the function(30. i0 = f (udc (30 The block scheme in figure8 is a graphical representation Vienna Rectifier I Voltage Space Vector Modulation Control with Output CD Voltage Balancing .ig.9. Simulation s

7、cheme of Vienna rectifier # Power Quality and Utilization, Journal Vol. XI, No 1, 2005 .ig.10. The time plots of phase currents, phase voltage and regulator output signal for displacement angle of j(1 = 0 .ig.13. The time plots of phase currents, phase voltage and regulator output signal for displac

8、ement angle of (1 = 12 .ig.11. The time plots of phase currents, phase voltage and regulator output signal for displacement angle of (1 = 12 .ig.14. The time plots of phase currents, phase voltage and regulator output signal for displacement angle of (1 = 3 .ig.12. The time plots of phase currents,

9、phase voltage and regulator output signal for displacement angle of 1 = ( 6 .ig.15. The time plots of phase currents, phase voltage and regulator output signal for displacement angle of 1 = 5 ( 12 7. CONCLUSIONS The mathematical model of the Vienna rectifier is presented in the paper. The set of vol

10、tage space vectors of the Vienna rectifier is defined. Input current zones in the relation to signs of the phase currents are defined. The relation between the active subset of voltage space vectors and current Grzegorz RADOMSKI: Analysis of Vienna Rectifier. zones are carried out. Control area limi

11、tations are derived. The equivalent scheme of the output circuit is presented and described by equations and related block scheme. Simulations of the rectifier system in the case of different input displacement power angle are presented. The system limitations carried out in the theory are verified

12、by the simulation results. # SYMBOLS RE.ERENCES 1. K o l a r J . W . , Z a c h . . C .: A Novel Three-Phase Utility Interface Minimizing Line Current Harmonics of High-Power Telecommunications Rectifier Modules. Record of the 16th IEEE International Telecommunications Energy Conference, Vancouver, C

13、anada, Oct. 30-Nov. 3, pp. 367374, 1994. 2. K o l a r J . W . , E r t l H . : Status of the Techniques of ThreePhase Rectifier Systems with Low Effects on the Mains. 21st INTELEC, Copenhagen, Denmark, June 69, pp. No. 141, 1999. 3. M i n i b c k J . , K o l a r J . W . : Comparative Theoretical and

14、Experimental Evaluation of Bridge Leg Topologies of aThreePhase Three-Level Unity Power .actor Rectifier. Proceedings of the IEEE Power Electronics Specialists Conference, Vancouver, Canada, June 17-21, 3, pp. 16411646, 2001. 4. Drofenik U., Kolar J.W.: Comparison of Not Synchronized Sawtooth Carrie

15、r and Synchronized Triangular Carrier Phase Current Control for the VIENNA Rectifier I. ISIE99, Bled, Slovenia, 1999. 5. M i n i b c k J . , S t r g e r e r . . , K o l a r J . W . : A Novel Concept for Mains Voltage Proportional Input Current Shaping of a VIENNA Rectifier Eliminating Controller Mul

16、tipliers. Proceedings of the IEEE 16th IEEE Applied Power Electronics Conference, Anaheim, USA, March 48, 1, pp. 587591, 2001. 6. S t r g e r e r F . , M i n i b c k J . , K o l a r J . W .: Implementation of aNovel Control Concept for Reliable Operation of aVIENNA Rectifier under Heavily Unbalanced

17、 Mains Voltage Conditions . Proceedings of the IEEE Power Electronics Specialists Conference, Vancouver, Canada, June 1721, 2001. 7. M a l i n o w s k i M . : Sensorless Control Strategies for ThreePhase PWM Rectifiers. Warsaw University of Technology, Warsaw 2001, (PhD thesis. 8. K a m i e r k o w

18、s k i M . P. , K r i s h n a n R . , B l a a b j e r g . : Control in Power Electronics selected problems. Academic Press, Elsevier Science (USA 2002. 9. S t r z e l e c k i R . , S u p r o n o w i c z H . : Wspczynnik mocy wsystemach zasilania prdu przemiennego imetody jego poprawy Alternating Curr

19、ent Suply Systems and Methods of Its Improvement. Oficyna Wydawnicza Politechniki Warszawskiej, Warszawa 2000. 10. T u n i a H . , W i n i a r s k i B .: Energoelektronika. Power electronics. WNT, Warszawa 1994. 11. R a d o m s k i G .: Analysis of Modified Diode Bridge Rectifier with Improved Power

20、 .actor. Electrical Power Quality and Utilisation, 9, 1, 2003. 12. R a d o m s k i G .: Experimental Investigations of Modified Diode Rectifier with Improved Power .actor. Electrical Power Quality and Utilisation, 9, 1, 2003. ia , ib , ic , ii , i j , ik instantaneous values of the phase currents, i

21、nstantaneous values of the DC output iC + , iC capacitor currents, instantaneous values of the DC rectifier idc + , idc , in output currents, i0 instantaneous value of the output load current, sa ,sb ,sc ,si ,s j ,sk electronic valves state functions, s vector of electronic switches state functions,

22、 number of the current sector, SectI u fa ,u fb ,u fc ,u fi ,u fj ,u fk instantaneous values of the phase voltages of the electric power utility, instantaneous value of the zero u Nn = uS 0 sequence component voltage of the AC side converter phase voltages, uSan ,uSbn ,uScn ,uSin instantaneous value

23、s of the AC side converter phase voltages referenced to the centre point of the capacitive voltage divider, uSa ,uSb ,uSc ,uSi instantaneous values of the AC side converter phase voltages referenced to the neutral point of the electric power utility, vector of the AC side converter phase us voltages

24、 referenced to the neutral point of the electric power utility, udc , udc + , udc instantaneous values of the DC side output voltages, V0 , . ,V7 base voltage space vectors of the AC side rectifier output in the base current zone (SectI=0, e error angle, (1 phase displacement angle between the first harmonic of phase current and phase