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Brushless doubly-fed machine (BDFM) has two sets of winding on the stator, the power winding connect with constant frequency constant voltage three-phase power frequency electrical source ,the controlled winding connect with the matrix converter (MC). MC possess the capability of bi-directional power flow, can simultaneously provide sinusoidal input current and output voltage. The phase of input current...
MC (matrix converter) as a novel power converter with many virtues such as sinusoidal control input current and output voltage waveforms, bi-direction power flowing ability, as well as good characteristic of low-frequency performance, it has become a ideal power converter to excitate brushless doubly-fed wind generator. The frequency and amplitude of the output voltage and the grid-connected power...
With the development of renewable energy technology, the distributed wind-PV power system has a wider application. This paper proposes a distributed wind- PV power system based on Multi-Agent, whose main character is energy management, and describes the multi-agent cooperative reinforcement learning process using the joint action learning pattern as the cooperative strategy. The experiment of a distributed...
As a new ldquogreenrdquo converter, Matrix converter can render bi-directional power flow without big energy storage. Based on the special structure of Brushless Doubly-Fed Machine (BDFM), the wind power system with BDFM fed by MC is advanced in the future. Meanwhile, the reactive power analysis will become more and more important as the development of wind power technology. This paper created the...
A distributed hybrid coordinated wind-photovoltaic (PV) power system structure based on multi-agent system was proposed in this paper. The basic wind power unit controller and photovoltaic cells controller were viewed as electrical source agents (ESA). The energy management system was viewed as management coordinated agent (MCA). The MCA and the ESA registered on it were defined as agent domain. A...
In order to research the wind power technology in the environment far away wind farm, this paper proposed a design and realization wind power generation simulating and experimental system based on ARM and DSP. It includes wind speed simulating system, wind turbine simulating system, power generation system, monitoring system and controller. In the system, simulates actual wind using statistical model...
Aiming at the complicated conditions of wind farm, this paper proposes a semi-physical simulation system that can simulate the operation of wind turbine under laboratory conditions. First, gives simulated wind velocity that based on ARMA and statistical wind velocity model, and then utilizes field data to make power spectrum correction. Second, Basing on the combination of the wind wheel, transmission...
This paper aims at seeking reasonable power dispatching scheme for distributed wind-solar power generation hybrid system, to satisfy some basic requirements, such as dispersed electric power demand, electric power quality and reducing generation cost and so on. Firstly we represented some elements of the main parts in the hybrid system; and then made basic dispatching strategies according to different...
This paper summarizes the latest development of power electronic technology in wind generating system of variable speed-constant frequency (VSCF). Firstly, the typical structure, merits and demerits of general VSCF wind generating system are analyzed. The relative power electric technology and application in the direct-driven wind generating system and double-fed wind generating system, such as the...
This work presents a controller for maximum wind energy capture of wind power system according to the theory of auto disturbance rejection controller (ADRC). The uncertainties in the torque of turbine and friction are both considered as an unknown disturbance to the system. The expending state observer can evaluate the unknown disturbance. With the nonlinear state error feedback control law, the disturbance...
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