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In this work, we are interested in the experimentation of an autonomous wind energy conversion system (WECS) using a test bench emulating a variable speed wind turbine (VSWT). This wind generator is connected to isolated loads through a DC bus and an inverter. The regulation of the DC bus voltage is carried out by a DC load controlled by a chopper. The goal of our work is to show the load voltage...
Wind power is one of the common distributed generation in microgrid. According to the requirements of microgrid, permanent magnet synchronous wind generator (PMSWG) for wind energy distributed generation was designed in this paper and it has simple structure, easy control and low cost characteristics, non-controllable rectifier and grid-connected PWM convertor is adopted as the AC grid-connected circuit...
In the case of operating in a weak grid system, when wind power becomes a significant portion of the power system or even the sole energy source, the wind power generator and its converter are expected to help maintain the grid voltage amplitude and frequency, operating like the conventional large synchronous generator (SG). The grid-side converter needs to work as a voltage source to regulate the...
The paper presents a control strategy for a wind energy conversion system (WECS) for an optimal extraction of power from the wind. The topology of the system consists of a permanent magnet synchronous generator (PMSG), a diode bridge rectifier, a hybrid dc-dc converter which lowers the dc voltage, a supercapacitor and an inverter. However, the grid side inverter is not subject to this paper research...
The recent trend of wind power generator is to use variable speed wind turbines coupled with Direct Driven Permanent Magnet (DDPM) Synchronous Generators. This configuration offers a considerable flexibility in design and operation, as the output of the generator is delivered to the grid through a fully controlled frequency converter. In this paper, a new control strategy for this generation unit...
Using a boost chopper to implement the maximum power point tracking (MPPT) for a PMSG-based small-scale wind turbine is described in this paper. By analyzing the characteristics of the boost chopper, the optimal duty ratio was theoretically determined by the equivalent resistance of the load. Then the duty ratio was used as a reference instruction to control the output power of the permanent magnet...
Back to back full-size PWM converter is widely used in direct drive wind power system (DDWPS). It is the most cost-effective converter topology verified in field application. The characteristics of back to back full-size converter of DDWPS based on permanent magnetic synchronous generator (PMSG) are researched on in detail through a precise simulation and an experiment. The control strategy is given...
Since variable-speed generation has a higher energy capturing and converting efficiency than the fixed-speed system, new proposals for wind power system utilize variable-speed generators are introduced, among which permanent-magnet synchronous generator(PMSG) is an attractive choice. This paper describes a sensorless vector control strategy for a direct-driven PMSG, which is connected to the power...
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