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We consider the problem of minimizing the total transmission power for a OFDM network where mutual interference exists among cells, with the power and load constraints for each base station (BS) and the rate demand constraint for every user. To solve the power minimization problem, we develop a distributed resource allocation and power control algorithm with low complexity. The complexity of the proposed...
In this paper, we aim to minimize the total transmission power in uplink LTE networks where mutual interference exists among cells. We use the signal-to-interference-noise-ratio (SINR) coupling model to characterize the mutual relation. By analyzing the SINR coupling model, we prove that operating at minimal rate and maximal load is optimal in minimizing the total transmission power. To solve the...
Switching voltage regulator (VR) modeling has numerous advantages over the conventional state average VR modeling methodology, in terms of accuracy, functionality, tuning capability, and extended applications on EMI. In previous work, switching VR modeling based on Pspice was discussed [1]. However, it is fairly accurate with simulation time limited by circuit complexity and often results in convergence...
As the key technology of green energy, smart grid is allowing large amounts of electric loads plug in such as wind turbines, solar panels and plug-in hybrid electric vehicles (PHEVs). Compared to the developments of wind turbines and solar panels, the deployment of PHEVs is much behind as expected. The main barriers of PHEV deployment are the huge impacts of power distribution networks and charging...
A fuzzy decoupling technique is proposed for model validation of large-scale power systems. To solve the problem of incredibility lying in power system dynamic simulations, a wide area pattern (WAP) is defined which reflects the parameter effects of certain component to the space-time trajectories, especially with consideration of the characteristics of huge amount of measurements and model parameters...
Influences of large impact loads including high-speed railways, high-capacity arc furnaces and high-voltage high-capacity motors start-up on power quality of grid are researched deeply in this paper. Firstly, the characteristic and modeling of this three typical impact loads are studied. Secondly, simulation influences of these three loads on power quality of grid are implemented and compared with...
In April and May 2011 model tests have been conducted in the Offshore wave basin of MARIN to calibrate and validate simulation codes for floating wind turbines. This paper reports on a numerical study of an offshore floating wind turbine (OFWT) and about the comparison of simulation results with experiments at model scale. This numerical study aims to reproduce the physical model tests of a wind turbine...
Single sided linear induction motor (SLIM) has good direct drive ability though its efficiency is poor compared with the rotary counterpart. The motor model including iron loss under synchronous coordination is established and the variable loss function is derived in the paper. In the proposed equivalent circuit model of SLIM, to consider the influence of primary leakage inductance on loss calculation,...
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