Doubly-fed Induction Generator Drives for Wind Power Plants
نویسندگان
چکیده
This chapter presents the theoretical basics of the electric power generation using doublyfed induction drives in wind turbines. This type of drive is the most utilized in wind power plants nowadays. This is mainly due to its fast dynamic response and reduced power electronics on the rotor side. This latter aspect is responsible for less harmonic pollution in the network and reduced acquisition costs. To begin with, the mathematical background required for comprehending the formulation used on electrical drives theory is repeated. Then the electromechanical energy conversion process in an electrical generator is explained, followed by a steady-state analysis of the induction machine. Subsequently, the doubly-fed induction generator and the network side circuit are introduced. Finally, active and power flow issues are discussed. The feasibility of reactive power production is in accordance with the new requirements from the power companies on wind energy converters and the degrees of freedom in its production allow for optimisation of the power losses.
منابع مشابه
Active and reactive power control via currents of a rotor’s d and q components with nonlinear predictive control strategy in a doubly fed induction generator based on wind power system
Wind energy today, has attracted widespread interest from among a variety of sources of renewable energy in the world. Owing to the increasing demand for production of electrical energy for electricity networks by using wind power, it is essential that wind power plants are actively incorporated in the network’s performance using an appropriate control system. In general, these wind power p...
متن کاملActive and reactive power control via currents of a rotor’s d and q components with nonlinear predictive control strategy in a doubly fed induction generator based on wind power system
Wind energy today, has attracted widespread interest from among a variety of sources of renewable energy in the world. Owing to the increasing demand for production of electrical energy for electricity networks by using wind power, it is essential that wind power plants are actively incorporated in the network’s performance using an appropriate control system. In general, these wind power plant...
متن کاملSliding-Mode-based Improved Direct Active and Reactive Power Control of Doubly Fed Induction Generator under Unbalanced Grid Voltage Condition
This paper proposes an improved direct active and reactive power control (DPC) strategy for a grid-connected doubly fed induction generator (DFIG) based wind-turbine system under unbalanced grid voltage condition. The method produces required rotor voltage references based on the sliding mode control (SMC) approach in stationary reference frame, without the requirement of synchronous coordinate...
متن کاملA Combined Vector and Direct Power Control for AC/DC/AC Converters in DFIG Based Wind Turbine
The doubly-fed generators (DFIG) have clear superiority for the applications of large capacity and limited-range speed control case due to the partially rated inverter, lower cost and high reliability. These characteristics enable the doubly-fed wound rotor induction machine to have vast applications in wind-driven generation.In this paper Combined Vector and direct power control (CVDPC) strate...
متن کاملLyapunov-Based Robust Power Controllers for a Doubly Fed Induction Generator
In this work, a robust nonlinear control technique of a doubly fed induction generator (DFIG) intended for wind energy systems has been proposed. The principal idea in this article is to decouple the active and reactive power of the DFIG with high robustness using the backstepping strategy. The principle of this control method is based on the Lyapunov function, in order to guarantee the global ...
متن کامل