Other Parts Discussed in Thread: TMS320F280049C, TIDM-02008
I am a research intern at Havells India Ltd. We are designing and implementing a 1kW Bidirectional Totem-Pole Bridgeless PFC using SiC MOSFETs. We have completed the hardware design and are currently working on the control loop algorithm which is to be implemented on our TMS320F280049C microcontroller. We are currently referring the reference design TIDM-2008/TIDM-1007: Bidirectional Interleaved CCM Totem Pole Bridgeless PFC Reference Design Using C2000 MCU for the control loop design.
We plan to design the system in Simulink and generate auto-code which is to be ported into our microcontroller. We are facing issues in tuning our PI controllers. Currently our system is stable at higher loads and goes unstable at lighter loads in the simulation. We tuned our PI controllers using trial and error method hence we cannot explain the reason for choosing such values and nothing is learnt out of this. I am looking for some resources which I can refer to accurately design my controllers. Also, if any of the authors of this reference design (Manish Bhardwaj, Jongwan Kim) can give us some insights on how they designed the control loop, it would be of great help.