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Search results for: coupling
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Year: 2010, Volume: 10, Issue: 3
... analysis and design I. INTRODUCTION Active power filters based on voltage source inverter topology are widely used to improve power quality of nonlinear loads at the point of common coupling to the network. The switching devices of the voltage source converter Fig. 1. Basic structure of a three phase active power filter bridge are driven with ...
Year: 2009, Volume: 9, Issue: 3
... ref Ts, Tr: Time constants of stator and rotor respectively; V: coupling coefficient; Ls, Lr: Cyclic inductances of stator and rotor respectively; ... dt p* 1 s.Tr* ids L M r In order to obtain the decoupling between the two control© m ¹ variables, we have to apply the ...
Year: 2010, Volume: 10, Issue: 1
... VOC. VOC guarantees high dynamics and static coordinate transformation and separate PWM voltage performance via internal current control loops. As it can be modulator, no need for decoupling between the control of seen in Figure 2, the scheme decouples the converter the active and reactive components, and better dynamics currents into active and reactive power ...
Year: 2009, Volume: 9, Issue: 3
... 6] resulting in high variation for current and power signal model, coupled and coupling transistor sizes for in different process corners. In this work, to achieve ... coupled and Figure 3. Varactor and capacitor banks. coupling devices as gCoupled and gCoupling respectively. The quadrature control loop can be modeled as shown in Figure 2 ...
Year: 2010, Volume: 10, Issue: 1
... system consists of a 100 mean PD distribution, ten clusters (sub plots) (Sk-:Ku-), kV high voltage transformer, discharge free Coupling (Sk-:Ku+), (Sk-:Sk+), (Sk-:CC), (Sk+:Ku+ ...
Year: 2009, Volume: 9, Issue: 2
... 1 ,2]. Traditionally, rotor field-oriented control (RFOC) has methods, the torque and stator flux vector can be regulated permitted fast transient response by decoupling torque and with PI controllers, and the required voltage vector can be flux control [3]. This control strategy exploits the fact that in applied to ...
Year: 2009, Volume: 9, Issue: 2
... studied induction machine is not current supplied the two unknown quantities A and Js in IV. 2D FEM MODEL OF THE INDUCTION MACHINE (1) are determined by coupling the finite element model of The physical support for this study is represented by an the machine, Figure 3, with the corresponding circuit model, S1 duty ...
Year: 2009, Volume: 9, Issue: 2
... , and outlets reactances X1 have to be pole and phase, as it is in our practical implementation. The calculated. magnetic asymmetries due to the different magnetic coupling of edge phases R and, respectively, S with the III. THE MAGNETIZATION REACTANCE mean phase, are taken into account. The self inductance of For ...
Year: 2009, Volume: 9, Issue: 2
... of the manufacturers give the insertion radio-frequency impedance in a test point, in the same time loss of EMI filters or EMI ferrites versus frequency for a creating the coupling possibility to the test instrumentation 50Ω source and load impedances. The 50Ω value represents along with the isolation of the test circuit from the undesired also the standardized ...
150. Influence of Different Types of Metal Plates on a High Frequency RFID Loop Antenna: Study and Design
Year: 2009, Volume: 9, Issue: 1
... the vicinity of the loop antenna. The most important problem is the shifting of the resonance frequency. Because of this frequency shift, there is no optimal energy coupling between the RFID tag and the loop antenna, resulting in a weak performance and low reliability. Tuning the antenna in a static metal environment could be a ...
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