一、设计目的：掌握SIMULINK仿真环境常用模块库和电力系统模块库;对直流电动机制动进行仿真设计。二、设计内容：他励励直流电动机能耗制动,观察转速、电枢电流、励磁电流、电磁转矩;他励励直流电动机反接制动,观察转速、电枢电流、励磁电流、电磁转矩; 他励励直流电动机回馈制动,观察转速、电枢电流、励磁电流、电磁转矩。
Abstract : For braking , DC There are many ways moving mechanism , can generally be divided into three categories , dynamic braking , reverse braking , regenerative braking . He excited DC motor braking energy on the project has been widely used because this braking mode , simple, reliable , safe and economical. In fact, the principle of dynamic braking is to reverse current direction , the opposite of the electromagnetic torque and the rotational speed to generate a torque in the opposite direction , to achieve the purpose of the braking deceleration . By MATLAB simulation, the icon intuitive explanation excited DC motor shutdown process , to explain the changes in the different stages of the motor operating characteristics curve at key points ( motor instantaneous state ) to explain. Before applying the basics and introduced to solve the relationship between T, TL, To between
In this paper, the DC motor braking , reverse braking , regenerative braking , part of a small error in ignoring the fallout of greatly increased complexity of the algorithm factors , before and after the motor brake voltage, current , and speed of a comparative study analysis , and use SIMULINK MATLAB simulation system used for the various parts of the system are encapsulated and connectivity , and to design a specific module , while a series of parameters for which the configuration. After starting the system simulation , the parameters are smoothly reaches zero. Through the system simulation experiments show that: the system is designed, high degree of automation , the experiment short time , stable and reliable , basically meet the design requirements.
Keywords: DC; BRAKING; MATLAB; SIMULINK