TAILIEUCHUNG - Recent Developments of Electrical Drives - Part 29

Recent Developments of Electrical Drives - Part 29. The book stating the recent developments of electrical drives, can be useful for engineers and researchers investigating and designing electrical and electronic devices as well as for students and young researchers dealing with electrical and electronic engineering, computer sciences (advanced computer modelling, sophisticated control systems with artificial intelligence tools applied, optimal design bye use of classical and genetic algorithms employed), applied mathematics and all the topics where electromagnetic, thermal, mechanical phenomena occur | II-11. Direct Power and Torque Control Scheme 273 Moreover additional power feedforward control loop was implemented and tested. Proposed control system assures four quadrant operation energy saving good stabilization of the dc-voltage allows to reduce a dc-link capacitor constant switching frequency almost sinusoidal line current low THD for ideal and distorted line voltage noise resistant power estimation algorithm high dynamics of power and torque control low motor current and torque ripple Power feedforward loop from the motor side to the PWM rectifier improved control dynamics of the dc-link voltage. It allows fulfilling power matching conditions under transient for PWM rectifier and inverter motor system. References 1 H. Hur J. Jung K. Nam A Fast Dynamics DC-link Power-Balancing Scheme for a PWM Converter-Inverter System . IEEE Trans. on Ind. Elect. vol. 48 No. 4 August 2001 pp. 794803. 2 L. Malesani L. Rossetto P Tenti and P Tomasin AC DC AC Power Converter with Reduced Energy Storage in the DC Link IEEE Trans. on Ind. Appl. vol. 31 No. 2 March April 1995 pp. 287-292. 3 J. Jung S. Lim and K. Nam A Feedback Linearizing Control Scheme for a PWM ConverterInverter Having a Very Small DClink Capacitor IEEE Tran. on Ind. App. vol. 35 No. 5 September October 1999 pp. 1124-1131. 4 J. S. Kim and S. K. Sul New control scheme for ac-dc-ac converter without dc link electrolytic capacitor in Proc. of the IEEE PESC 93 1993 pp. 300-306. 5 R. Uhrin F. Profumo Performance Comparison of Output Power Estimators Used in AC DC AC Converters IEEE 1994 pp. 344-348. 6 A. Tripathi . Khambadkone . Panda Space-vector based constant frequency direct torque control and dead beat stator flux control of AC machines Proc. of the IECON 01 Vol. 2 pp. 1219-1224 vol. 2. 7 T. Noguchi H. Tomiki S. Kondo I. Takahashi Direct Power Control of PWM converter without power-source voltage sensors IEEE Trans. on Ind. Appl. Vol. 34 No. 3 1998 pp. 473479. 8 T. Ohnishi Three-phase PWM converter .

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