基于双DSP的磁浮开关磁阻电机全数字控制器研究

根据磁浮开关磁阻电机（SRM）对控制器硬件资源及实时性要求，基于双DSP 与双口RAM，研制了磁浮SRM的全数字控制器。控制器以两片TMS320LF2407A 为核心，以满足磁浮SRM 功率变换器对PWM 调制信号的需求，双口RAM 用于实现两DSP 之间的信息实时共享，旋转控制用功率变换器采用传统不对称半桥电路，悬浮用功率变换器采用两块IPM 模块，双DSP 管理三套功率变换器以共同实现旋转控制和悬浮控制。制作了全数字控制器实验样机，进行了实验测试。结果表明，该全数字控制器实现了期望功能，两DSP 可协调工作，实时交换所需数据，能有效地完成对磁浮SRM 的控制。
Abstract: In view of the hardware resource and real-time control, the digital control system for magnetic suspending switched reluctance motor is designed based on double-DSP and DARAM. Two DSPs are used in the controller, because the 19 PWM signals are demanded by the power inverters. A DARAM is used to realize real-time data sharing between two DSP.The power inverter to control torque is realized by non-symmetrical semi-bridge structure, and two power inverters to control suspending are realized by two IPMs. Three power inverters are all controlled by two DSPs. The digital controller is realized and tested. The experimental results are presented to verify the controller.
关键词﹕磁浮开关磁阻电机，DSP，双口RAM，数字控制
Keywords: magnetic suspending switched reluctance motor, DSP, DARAM, digital control