小型直流电动机的双路功率控制方法研究

Study on Control Method of Miniature DC Motor Double Way Power

在现代工业环境下,小型直流电动机具备稳定性高及过载能力强的特点,得到广泛应用,同时电机能耗控制也成为了备受关注的课题。于是文中将小型直流电动机作为研究方向,对电机功率进行有效控制达到节能目的。首先,在小型电机间接转矩控制系统中,利用功率绕组静态坐标系描述功率绕组无功功率及控制绕组磁链间的关系,通过调整电机参数与电压参数构建无功功率绕组磁链控制模型,先表征电动机间接转矩系统内部性能状态;然后,基于直流电机的内部结构状态,提出以搜索寻优法为基础利用黄金分割理论的功率控制策略,在保证输出转矩和转速一定的情况下,通过运用搜索寻优法调整励磁电流并使该输出电流为最小值,并采用黄金分割理论缩小搜索范围以控制最优搜索状态,最后达到有效控制功率的目的。实验证明,通过对功率的控制有效降低了电机能耗。

In the modern industrial environment, small DC motor has the characteristics of high stability and high overload capacity, which is widely used. However, the control of motor energy consumption has become a topic of great concern. So in this paper, the small DC motor as the research direction, to achieve effective control of motor power to achieve the purpose of energy saving. First of all, in the indirect torque small motor control system, describes the relationship between the power winding and control winding flux power between the power winding static coordinate system, construction of reactive power winding flux control model by adjusting the motor parameters and voltage parameters, the first motor is connected to the internal state of the performance characterization between the torque system;then, the state of the internal structure of DC motor based on the proposed optimization method based on the theory of the golden section by using the power control strategy, the output torque and speed is constant, by using the search method to adjust the excitation current and the output current is minimum,and the golden section theory to reduce the search scope to search optimal control state. Finally, to achieve effective control of power. The experimental results show that the power consumption can be reduced effectively by controlling the power.