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The symmetrical compensation is widely used in inductive power transfer (IPT) system due to the advantages of achieving good coupling coefficient when the coils are perfectly aligned and easy to design. This paper investigates a general tuning method for voltage-fed symmetrical higher-order resonant networks for achieving load-independent transconductance. With the proposed tuning method, a resonant...
This paper proposes an interleaved partial power converter (PPC) for the DC-DC conversion stage of electric vehicles (EVs) fast charging stations. The proposed converter topology is based on the H-bridge DC-DC converter. PPC allows the converter to process only a fraction of the total power, the rest being bypassed and directly supplied to the load. This increases the converter efficiency, as only...
With the development of electric locomotives in the direction of high speed and heavy load, the problems of negative sequence current and excessive neutral section in traction network have become more serious than before. Thus, a hybrid railway power conditioner (H-RPC) is proposed for co-phase power supply system to solve these problems. In this paper, the topology and compensation principle of the...
It is suggested to use the topological task for select the placement of distributed generation source. A topological task can not be solved by methods of functional analysis, because it is a problem with variable parameters. The algorithm of modeling for solving the topological task is proposed. The solution of the topological problem is significantly influenced by the parametric features of the object,...
This paper proposes a mixed-integer quadratic programming (MIQP) model for optimal day-ahead distribution networks dispatch considering Wind Generators (WGs) and topology reconfiguration. Firstly, linearized current injection model is introduced for generators by a series of approximations. Then the day-ahead Switching Operations (SOs) of reconfiguration could be calculated in a linear form based...
In this paper, a cascaded multilevel inverter is implemented for resistive as well as RL load. Working of Cascaded multilevel inverter is studied for various levels of voltages by implementing proper switching. To verify the operation of the proposed inverter, simulation is completed using MATLAB for various levels of outputs such as nine, eleven, fifteen, twenty seven, thirty three and thirty nine...
Switching power converters can achieve very high efficiency. However, they do so only for slim subset of operating conditions. Power supplies and loads with highly variable parameters do not operate at peak performance all the time. Energy harvesting and battery powered systems are typical examples. This paper studies the convenience of heterogeneous parallel DC-DC converter as a solution to this...
This paper presents a study of the operating performance of an efficient high power and low cost three-phase and three-level power rectifier as a complementary reactive power source. Simulation and experimental (final version) results are presented to support the above ideas.
This paper presents a method of mathematical technique using Joint Approximate Diagonalization of Eigen Matrices (JADE). The advantages of this method, it can predict the original analysis of source signal using limited information of the system as well as to minimize costs by reducing the number of equipment to estimate the type of load profile at certain locations. By using innovative methods based...
Natural gas pipelines are powered by compressor stations which usually consist of multiple interconnected compressors units ensuring the required operational flexibility. The aim of load sharing optimization is to operate these compressor units in an energy efficient way while at the same time satisfying varying demands. This paper uses a two-step approach to first identify individual compressor performances...
A fast power service restoration method for distribution network with DG is proposed in this paper. Firstly, a network simplification and multi-layer description method is presented. Secondly, on the basis of the network simplification and description, the studied restoration problem is analyzed equivalently in an equivalent calculating network and it is turned into a knapsack problem whose mathematical...
This paper compares the characteristics of serial, parallel and LCC compensation topologies of secondary-side in wireless powering systems with a constant-current primary-side. The topologies characteristics of power, efficiency and load are carefully analyzed and detailed presented. And the correctness of theoretical analysis is verified by simulations. This study results can guide the selection...
In order to simulate the varied kinds of current and meet the acquirement on the different power, this paper proposes a multifunctional DC electronic load. The proposed DC electronic load is composed of many cascaded current simulation units. The number of units is according to the input power rating. Each unit is based on the combination of buck and boost converter, which is able to simulate both...
Novel architectures for massively parallel machines offer better scalability and the prospect of achieving linear speedup for sizable problems in many domains. The development of suitable programming models and accompanying software tools for these architectures remains one of the biggest challenges towards exploiting their full potential. We present a multi-layer software abstraction model to develop...
Utilities use the bus/branch model for planning and operations studies. In the bus/branch model, bus numbers are used as unique identifiers. However, bus numbers can change due to addition of equipment, specific substation configurations (splitting buses) or due to equipment outages. This often creates problems because many auxiliary files used in power system studies need to be modified. If the node/breaker...
The proposition for this study is to assess how much simulation results can differ from real measurements on the implementation of a control strategy for a grid-connected PV inverter. The system is simulated in Matlab/Simulink and experimentally evaluated on a real low-voltage distribution grid. The PV inverter is implemented using a power-hardware-in-the-loop platform running the control algorithm...
This work is focused on the characterization of the traffic allocated in Elastic Optical backbone networks when different dynamic traffic profiles are generated. Extensive simulations are done to statistically model the real-time traffic carried by this kind of networks. Well known topologies such as NSFNet and US_Backbone are considered as well as different parameters applied to the traffic generation...
Next-generation power networks will contain large numbers of grid-connected inverters satisfying a significant fraction of system load. Since each inverter model has a relatively large number of dynamic states, it is impractical to analyze complex system models where the full dynamics of each inverter are retained. To address this challenge, we derive a reduced-order structure-preserving model for...
As a routine within the planning and operation of the electrical power system, Short-term load forecasting (STLF) is an essential issue in energy fields. Its prediction accuracy and precision specifically have an effect on the basic safety, stability and economic efficiency of the power system. Moreover, the actual forecasting result also has an impact on operations such as startup and shutdown of...
The modern Distribution Systems (DS) require for accurate and fast Power Flow (PF) algorithms as a basis for other DS applications. Almost all decisions are taken based on accurate PF results and, possibly, they have to be taken in real time. In this paper, a new PF algorithm based on a linear programming approach is proposed. The graph theory is used for modeling the distribution network with some...
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