一种考虑漏电流最低损耗的控制器电子模块设计与实现

Design and implementation of a controller electronic module considering minimum loss of leakage current

漏电流损耗占电路能耗的大部分,属于实时变化的动态过程,传统控制器采用堆栈方法,通过对输入信号的控制实现对漏电流损耗的控制,无法适应漏电流的动态变化,不能实现最低损耗控制。为此,设计一种考虑漏电流最低损耗的控制器电子模块,通过模拟电路与CPLD相结合的方法对漏电流最低损耗控制器电子模块进行设计,给出设计的总体结构。通过霍尔传感器对漏电流进行检测,利用比较器将检测的实际漏电流与参考漏电流进行比较,用CPLD形成对应的斩波驱动信号,发送至电压控制器,通过电压控制器对主开关器件的导通和断开进行控制,实现漏电流最低损耗的控制。软件设计中,设计一个调试软件,给出电流最低损耗控制程序和交替斩波程序。实验结果表明,所设计控制器电子模块的漏电流损耗很低,且运行效率高。

The leakage current loss occupies most of the energy consumption of the circuit, and belongs to the dynamic pro- cess of real-time change. The stack method is used in the traditional controller to control the leakage current loss by means of the input signal control, which can＇t adapt to the dynamic change of the leakage current and can＇t realize the minimum loss con- trol. Therefore, a controller electronic module considering the minimum loss of leakage current was designed with the method of combining analog circuit with CPLD. The overall structure of the design is given. The leakage current is detected with Hall sen- sor. The comparator is used to compare the detected actual leakage current and reference leakage current. The CPLD is used to form the corresponding chopper drive signal, and send it to the voltage controller. The voltage controller is adopted to control the breakover and disconnection of the main switching devices, so as to realize the minimum loss control of leakage current. A de- bugging software was designed in software design. The control program of current minimum loss and alternate chopper program are given. The experimental results show that the designed controller electronic module has low leakage loss, and high operating efficiency.