161 results found.
Year: 2010, Volume: 10, Issue: 4
... and rotor voltages Vdr and V qr respectively. The coupling term variable pulsations respectively; Vdq, I dq ... CONTROL STRATEGY OF THE DFIG DFIG PCC+ A. Decoupling of the active and reactive powers Gear In an ... and I qr the magnetizing inductance. ž is the coupling-axes matrix The electromechanical equation is expressed by: are ...
Terms matched: 3 - Score: 14 - 1,152k
Year: 2010, Volume: 10, Issue: 4
... top is plotted in Fig. 13. Again, as in simulations (Fig. 8 and 11), it describes an almost perfect circle due to the decoupling between the sampling period of the control system and the switching period of the inverter. Fig. 11 The locus of stator flux space vector top for simplified ...
Terms matched: 1 - Score: 3 - 1,957k
Year: 2010, Volume: 10, Issue: 4
... . This means that DG unit has most effect on DG cell (FC) hybrid system increases the voltage in its point of bus (PCC). common coupling (PCC) and other buses in distribution network[7]. The voltage change depends on the network configuration under load conditions, and it is related ...
Terms matched: 1 - Score: 3 - 1,987k
Year: 2010, Volume: 10, Issue: 4
... Es s s r € u s € Rs i s € Ls. s (5) avoided. Secondly, the rotor flux orientation avoids cross- dt coupling blocks in the d and q current regulators. The only Estimated back-emf, and as well all the variable used in (5 ), disadvantage is the ...
Terms matched: 1 - Score: 3 - 2,453k
Year: 2010, Volume: 10, Issue: 4
... the way of the light beam adjustment, Fig. 2. performing the optical coupling. This system of filters allows the mechanical modification of the optocoupler output parameters ... element London, GB, 1985. and can be caused by optical and mechanic couplings. [3] G. Raţƒ, M. Raţƒ, I. ...
Terms matched: 2 - Score: 8 - 840k
Year: 2010, Volume: 10, Issue: 3
... frequency. Equation (7) shows that d q current is related with both coupling voltages ‰Li q and ‰Li d and main voltage u d and u q ... knowledge. Several modulation (SVPWM) control scheme for three-phase voltage methods for dq decoupling and control, similar to the field source PWM rectifier. The control system ...
Terms matched: 2 - Score: 13 - 604k
Year: 2010, Volume: 10, Issue: 3
... . By Imax motor shaft are transmitted to the load, resulting in mechanical was noted the maximum current obtained during the start-up wear in the motor bearings and load couplings. Therefore, and by IR the load current [14], [15]. Digital Object Identifier 10.4316/AECE.2010.03005 27 1582-7445© 2010 AECE Advances ...
Terms matched: 1 - Score: 3 - 903k
Year: 2010, Volume: 10, Issue: 3
... Voltage of Transformer(per unit) 4 5 6 8 fundamental frequency and chaotic ferroresonance 6 1 3 conditions similar to high capacity power transformers fed 2 via capacitive coupling from neighboring sources. Repeated 4 simulation of the system's nonlinear differential equation has shown that a change in the value of the equivalent 2 circuit capacitance to earth ...
Terms matched: 1 - Score: 3 - 1,225k
Year: 2010, Volume: 10, Issue: 2
... , 2i and 3i, i= 1, 6. Cartesian coordinates of point Pi (fig. 1) at the ends of leg i, with the Couplings in which the legs are articulated to the system attached to the platform, can be expressed in terms of platform, are noted on figure 1 points Ai ...
Terms matched: 1 - Score: 13 - 931k
Year: 2010, Volume: 10, Issue: 2
... emphasized, whom cooperation databases; SCDA will also have to define another has to be smoothed by a supervision system. on standard interface, able to allow the coupling of principle, the main functions of this level are carried drivers specific to the significant number of protocols out with PLCs (Programmable Logic Controller) €“ within ...
Terms matched: 1 - Score: 3 - 1,445k