Emulador de Lazo Abierto para Turbinas Eólicas de Paso Fijo

Abstract

A novel emulator for fixed pitch wind turbines that allows laboratory testing of the generator control systems associated with the turbines is presented. The novelty of the emulator is to be an open loop scheme. The emulator consists of the coupling in series of a source of DC voltage, a power resistance and a DC motor. The modification of the input DC voltage has the same effect as the variation of wind speed in a fixed pitch wind turbine. This article includes: 1) theoretical foundations of the emulator, 2) Excel and Simulink simulations, and 3) experimental results obtained in a bench of electrical machines. It is shown that the emulator can reproduce the mechanical power curves of a fixed pitch turbine, but with certain limitations at low speed.