divorce on the basis of impotency and abuse

I am 29 years old. I got married on 29 jan 2016(social)/27 nov 2015(registry) with a guy. We are from west bengal but he lives in chennai for work purpose. And in these 3 years of our marriage we didnt had intercourse even once. I am still virgin. I couldnt share this with any one. On nov 2018 i told everything to my parents and now i am staying with my parents. And also apart from this he raised his hands on me 2 times. 1st time he kept a knife on my neck and said that he will kill me and second time in this oct he beat me so hard that i couldnt move my hands for 3 days. I want to file a case against him on the basis of physical and mental abuse but it will be time consuming. After 3 years of marriage can i file a divorce case against him on the basis of impotency?