{'fraction_non_alphanumeric': 0.01603905160390516, 'fraction_numerical': 0.001394700139470014, 'mean_word_length': 5.293859649122807, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 1, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Development and Application of a Simple and Reliable Power Regulator for Small-scale Island Wind Turbine

Abstract Wind power generation is one of the most effective ways to solve the electric power supply in islands. This paper presents a simple, reliable, and effective power regulating device for small-scale island wind turbine, especially for the turbine's protection during strong winds. The regulator consists of a rigid tail with an electrical control rotating an aerodynamic vane to yaw the rotor edgewise to the wind direction during high wind speeds, an electric linear actuator, and a controller. Compared with the conventional mechanical vane applied in small-scale wind turbines, such a device possesses several advantages of simple structure, high controllability, and increased reliability. The implementation of rotating the vane actively only depends on the generator speed by measuring AC electrical frequency and the output power by measuring two DC electrical quantities, and no mechanical sensors are needed. The regulator has been applied to a 15-kW prototype operating on an island for more than three years. Field test results indicate that the regulator can effectively turn the rotor out of the wind direction and its behavior agrees well with simulations. Such means of power regulating for small-scale wind turbines can be advantageously utilized compared to other mechanical or electromechanical methods.