针对大功率电动机在直接启动过程中启动电流过从而对电网产生较大的冲击的问题,设计一种基于温度补偿控制的水电阻调速器的大功率转子绕线异步电机软启动及调速系统。介绍水电阻器的结构以及原理,采用A R P S经验公式分析温度变化对电...针对大功率电动机在直接启动过程中启动电流过从而对电网产生较大的冲击的问题,设计一种基于温度补偿控制的水电阻调速器的大功率转子绕线异步电机软启动及调速系统。介绍水电阻器的结构以及原理,采用A R P S经验公式分析温度变化对电解质溶液的电阻率影响,建立基于水电阻调速的异步电动机调速系统动力学数学模型,提出了温度补偿的控制方法,通过M a t l a b/S i m u l i n k仿真验证模型及算法的有效性。仿真结果表明:采用温度补偿的水电阻器调速系统启动电流较小,启动转矩平滑,调节速度快。展开更多
The switched reluctance motor （SRM） is applied in various industrial applications due to its profitable advantages. However, the robustness speed of SRM is one of the major drawbacks, which greatly affects the perfo...The switched reluctance motor （SRM） is applied in various industrial applications due to its profitable advantages. However, the robustness speed of SRM is one of the major drawbacks, which greatly affects the performance of motor. Thus, the aim of this paper is to control the speed of SRM using H-infinity control strategy. This H-infinity control technique is stronger against robustness. In the proposed speed controller, the rotor position of the SRM is applied to the controller. The speed variation of the rotor is determined from the reference speed and applied to the controller as input. Then, the speed variation and the corresponding sensitivity function are determined. The sensitivity function determination is based on the input weight of the controller. The weight adjustment process is repeated until a stable speed condition is achieved. Then, the output of the proposed control technique is compared with the existing control technique and the robustness is analyzed. Here, the existing control techniques considered are proportional- integral （PI） controller and fuzzy logic controller （FLC）- based PI gain tuning. The proposed control strategy is simulated in MATLAB working platform and the control performance is analyzed.展开更多
文摘针对大功率电动机在直接启动过程中启动电流过从而对电网产生较大的冲击的问题,设计一种基于温度补偿控制的水电阻调速器的大功率转子绕线异步电机软启动及调速系统。介绍水电阻器的结构以及原理,采用A R P S经验公式分析温度变化对电解质溶液的电阻率影响,建立基于水电阻调速的异步电动机调速系统动力学数学模型,提出了温度补偿的控制方法,通过M a t l a b/S i m u l i n k仿真验证模型及算法的有效性。仿真结果表明:采用温度补偿的水电阻器调速系统启动电流较小,启动转矩平滑,调节速度快。
文摘The switched reluctance motor （SRM） is applied in various industrial applications due to its profitable advantages. However, the robustness speed of SRM is one of the major drawbacks, which greatly affects the performance of motor. Thus, the aim of this paper is to control the speed of SRM using H-infinity control strategy. This H-infinity control technique is stronger against robustness. In the proposed speed controller, the rotor position of the SRM is applied to the controller. The speed variation of the rotor is determined from the reference speed and applied to the controller as input. Then, the speed variation and the corresponding sensitivity function are determined. The sensitivity function determination is based on the input weight of the controller. The weight adjustment process is repeated until a stable speed condition is achieved. Then, the output of the proposed control technique is compared with the existing control technique and the robustness is analyzed. Here, the existing control techniques considered are proportional- integral （PI） controller and fuzzy logic controller （FLC）- based PI gain tuning. The proposed control strategy is simulated in MATLAB working platform and the control performance is analyzed.
