Can a insurance company raise your premiums for a minor accident that was not your fault and no claim made. Just informed insurance company because i thought that was the right thing to do?

Yes, some insurers have rules that even if there was an accident with no payout or no claim made, your premiums will be affected. So once you report the incident to your insurer, they will consider it a claim against your future premiums. However, there are some companies out there that will not hold the incident against you, so would recommend you shop around for the best rate based on your situation.