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The paper presents the development of wind turbine emulator which consists of an induction motor, torque inverter and real-time interface card. The wind turbine emulator system includes wind speed profiles, mathematical model of wind turbines, modeling of rotor blade characteristics and modeling of rotor inertia. Wind speed can be easily programmed based on white noise random model, or recorded wind...
This paper presents a control method for output power smoothing of a wind energy conversion system (WECS) with a permanent magnet synchronous generator (PMSG) using the inertia of wind turbine and pitch control. The WECS used in this paper adopts an AC-DC-AC method with voltage-source converters (VSC). The generator-side converter controls the generator torque of the PMSG, while the grid-side inverter...
Wind generators represent a very interesting means for renewable energy harvesting, both grouped in large grid-connected farms and as small units contributing to supply isolated loads such as farms or villages located in remote regions. This paper describes the structure and control of a small-size self-orienting fixed-pitch wind genset using a 3-phase permanent magnets synchronous machine connected...
This paper deals with the voltage and frequency control of the generated electricity from a permanent magnet wind-turbine. The wind turbine is directly connected to a permanent magnet synchronous generator in order to avoid the losses associated to the gearbox so that only an AC/DC/AC power converter is used to control the variable voltage and frequency. The AC/DC converter is a three phases diode...
This paper shows a new induction generation system for wind power generation. This system has the voltage source converter exciting induction generator and the PFC converter to transfer the real power. This configuration enables asynchronous link and maximum power tracking for the cage rotor induction generator. Usually two full rating inverter sets are necessary to construct the asynchronous link...
This paper investigates the new wind power generation system, which uses the diode rectifier to convert the real power from the induction generator to the intermediate DC voltage, and the inverter to supply the reactive power necessary to excite the induction generator. This scheme is expected to reduce the system cost. Control scheme and soft start strategy are verified by the simulation.
A novel maximum power point tracking (MPPT) strategy is presented in the paper. When wind speed varies, the wind turbine could obtain a big torque difference by adopting the novel strategy to achieve the aim of tracking the optimum turbine speed fleetly. The square wave permanent magnet synchronous generator (PMSG) is adopted in this paper for considering the characteristic of the diode rectifier-Boost...
In the wind energy conversion system, the wind turbine captures the wind energy. Then the generator changes it to the electrical power. So the characteristic of the wind turbine is very important. For some laboratories that donpsilat have the practical wind turbine, it is very convenience to use the wind turbine simulator instead of the real wind turbine. The paper introduces the structure and characteristic...
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