نتایج جستجو برای: inductances
تعداد نتایج: 543 فیلتر نتایج به سال:
The resonance damping of parallel hybrid filters is analyzed. Active filters can be made to behave as variable resistances and/or inductances when they are connected in power systems; and the operating condition of the complete system can be adjusted dynamically to damp resonance. The effect of the hybrid filter configuration and the control strategy has been evaluated on the resonance damping,...
Winding inductance is an important parameter in determining the performance of electrical machines, particularly those with large inductance variation. This paper investigates the influence of winding inductance variation on the performance of a three-phase three-stack claw pole permanent magnet motor with soft magnetic composite (SMC) stator by using an improved phase variable model. The windi...
In this paper, the capacitance and inductance of a four-line transmission structure is characterized. The procedure used was developed by Ymeri et al for general analysis of multilayer multiconductor interconnects for specific applications in microelectronics. The characterization is based on the determination of the quasi-static electric scalar potential in the structure making up the four-lin...
We present a solution to the speed sensorless control problem for switched-reluctance motors under parametric uncertainty. Our main results guarantee velocity tracking control for velocity references with constant reference acceleration under the assumption that the load torque, the rotor inertia, the resistance and inductances are unknown. Under a persistency of excitation condition on a funct...
Motivation: Problems from control theory often involve a set of physical parameters , for instance, masses, spring constants, and damping coefficients with mechanical systems, or resistances, capacitances, and inductances with electrical circuits. The structural properties of the control system may depend crucially on the specific choice of concrete parameter values. In many relevant examples, ...
In Feynman’s lectures there is a remark about the limiting value of the impedance of an n-section ladder consisting of purely reactive elements (capacitances and inductances). The remark is that the limiting impedance z = limn→∞ zn has a positive real part. He notes that this is surprising since the real part of each zn is zero, therefore it is impossible for the limit to have a positive real p...
A novel technique to estimate and model parameters of a 460-MVA large steam turbine generator from operating data is presented. First, data from small excitation disturbances are used to estimate linear model armature circuit and field winding parameters of the machine. Subsequently, for each set of steady state operating data, saturable inductances and are identified and modeled using nonlinea...
Experimental results are presented on microwave inductors, transformers, and transmission lines fabricated in an Si/SiGe heterojunction-bipolar-transistor process with standard metallization and a thick polyimide dielectric. Microstrip transmission lines with characteristic impedances from 44 to 73 , ’s from 10 to 14, and insertion losses from 0.11 to 0.16 dB/mm at 10 GHz are presented. Convent...
Insertion of a dc-dc converter between the automobile battery and electrical loads is proposed. This would allow gradual conversion to higher battery voltage, regulation of dc distribution voltage, and multiple distribution voltage levels. Switching loss arising from parasitic inductances is a serious problem in this application. The nonlinear resonant switch can remove this source of loss, ach...
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