双凸极发电机电压调节的DSP控制实现

Realization of DSP Control of Voltage Regulator on Doubly-Salient Generator

采用励磁电流负反馈技术的模拟调压器在航空发电机调压器上得到了应用 ,对这种模拟调压器进行研究 ,可以得到其对应的传递函数。文中将模拟调压器的传递函数进行数字化 ,得到了可以应用于数字调压器的控制算法。针对双凸极无刷直流发电机的调压要求 ,设计了以TMS32 0 C32为核心的数字调压器硬件平台。采用上述控制算法的数字调压器对双凸极无刷直流发电机进行实验 ,取得了良好的控制效果。实验结果表明 ,在数字调压器中 ,采用励磁电流负反馈的控制算法跟未采用励磁电流负反馈的算法相比 ,具有较短的建压时间与较小的超调。

The analog voltage regulator applying excite current feedback is used in aircraft generators. The transfer function of this kind of voltage regulator is studied. The transfer function of the analog voltage regulator is converted into discrete time mode, so that the corresponding digital control algorithm can be obtained. This paper presents the hardware platform of the digital voltage regulator based on a DSP chip——TMS320C32. And the digital control algorithm is adopted in the hardware platform. In the experiment on a brushless doubly salient DC generator, the digital voltage regulator results in good responses. The experimental results show that the control algorithm with excite current feedback is advantage to the control algorithm without excite current feedback, due to its shorter voltage setup time and less overshoot.