CAJ | 학술논문

研究了一种新型风力发电机系统，包括发电机、调速电机、行星齿轮和风力机，发电机与太阳轮连接，调速电机与内齿圈连接，风力机轴与行星架连接。分析了不同工况下两台电机的工作模式与功率流的变化，针对此种结构提出一种全风况下转速?转矩模式控制策略，低于额定风速时调速电机转速控制能够实现发电机恒频并网，高于额定风速时通过控制调速电机转矩限制发电机输出有功功率在额定值附近。对控制策略进行仿真研究，并给出转速?转矩控制平滑切换规则，搭建了双转子风力发电实验平台，实现了并网操作，验证了该系统结构的可行性与控制策略的有效性。
연구료일충신형풍력발전궤계통，포괄발전궤、조속전궤、행성치륜화풍력궤，발전궤여태양륜련접，조속전궤여내치권련접，풍력궤축여행성가련접。분석료불동공황하량태전궤적공작모식여공솔류적변화，침대차충결구제출일충전풍황하전속?전구모식공제책략，저우액정풍속시조속전궤전속공제능구실현발전궤항빈병망，고우액정풍속시통과공제조속전궤전구한제발전궤수출유공공솔재액정치부근。대공제책략진행방진연구，병급출전속?전구공제평활절환규칙，탑건료쌍전자풍력발전실험평태，실현료병망조작，험증료해계통결구적가행성여공제책략적유효성。
A novel wind power system was proposed, which was composed of a generator, an auxiliary motor, a planetary gear and a wind turbine. The generator was connected to the sun wheel, while auxiliary motor was connected to the ring gear, and the shaft of the wind turbine was connected to the planetary carrier. The working mode and power flow about this type of structure in different working conditions were presented, and a novel speed-torque mode control strategy in all wind conditions was proposed. The generator can be connected to the grid by controlling the speed of the auxiliary motor when the wind velocity is under the rating value, and the active power of the generator can be kept around the rating value by controlling the torque of the auxiliary motor when the wind velocity is above the rating value. The dual-mode smooth switching rule was given, and the validity was tested by the simulation study. Moreover, experimental results were given to verify the theoretical analysis, and the feasibility of the system structure also was verified.