The PC member may be a professor, but I promise, they are human just like you and me. In your place, I'd find out the email address of professor and write a polite email making your case that
- you are both researchers in the same field
- you noticed the professor is actively participating in that special PhD consortium
- your submission to that consortium was accepted
- you have been following/citing that professor's work, but be very brief and direct about it! you're a researcher, but neither fan nor worshipper!
- you care for a meeting at the conference to which that consortium is associated
- you appreciate that professor's opinion
Or, if you really just care for feedback on that submission, you can flat out ask for an opinion on your submission.
These worked quite well for me. Also, direct approaches during coffee breaks are opportunities as well, but (T)PC members often have closed meetings during those so you would have to take your chances ...
But seriously, experts in their research areas care for the work of other researchers ... or you needn't care for their opinion.