基于DSP28335的最小占空比跟踪法研究

The Study of Minimum Duty-cycle Point Tracking Method Based on DSP28335

采用DSP28335作为核心控制器,实现了最小占空比跟踪法在五相逆变器双三相永磁同步电机(PMSM)系统中的应用。介绍了最小占空比跟踪法的基本原理,给出了基于DSP28335的最小占空比跟踪法编写流程,对五相逆变器双三相电机系统的空载启动、带载启动以及带载稳态运行等工况进行了实验验证,实验结果表明基于DSP28335的最小占空比跟踪法可以实现五相逆变器双三相电机系统的可靠运行。

The minimum duty-cycle point tracking method is realized by DSP28335 for a novel drive system,in whichtwo three-phase permanent magnet synchronous motor（PMSM） are fed by one five-leg inverter.The basic principles ofthe minimum duty-cycle point tracking method are described and the control algorithm is executed in DSP28335.Toverify the effectiveness of DSP28335-based minimum duty-cycle point tracking algorithm, three experiments are carriedout,including no-load start,load start and steady-state operation with load.The experimental results show that theminimum duty-cycle point tracking method can be used for industrial applications.