Star Wars: The Corellian Trilogy Series by Roger MacBride Allen

A trade summit on Corellia brings Han Solo back to the home world he left many years before.  Arriving on the distant planet with Leia, their children and Chewbacca, Han finds Corellia overrun with agents of the New Republic Intelligence and finds himself part of a deceptive plan whose aim not even he understands... moreA trade summit on Corellia brings Han Solo back to the home world he left many years before.  Arriving on the distant planet with Leia, their children and Chewbacca, Han finds Corellia overrun with agents of the New Republic Intelligence and finds himself part of a deceptive plan whose aim not even he understands. One thing is clear: the five inhabited worlds of the sector are on the brink of civil war and the once peaceful coexistence of the three leading races -- human, Selonian, and Drallan --  has come to an end. less

Imprisoned on the planet Corellia, Han Solo finds himself at the mercy of his evil cousin, Thracken Sal-Solo. Thracken plans to restore the Imperial system and seize total power -- no matter what the cost. Han has one chance to stop him. But to do so he must turn his back on his human cousin and join forces with a female alien. Dracmus was arrested as a ringleader in a plot against the corrupt Human League... moreImprisoned on the planet Corellia, Han Solo finds himself at the mercy of his evil cousin, Thracken Sal-Solo. Thracken plans to restore the Imperial system and seize total power -- no matter what the cost. Han has one chance to stop him. But to do so he must turn his back on his human cousin and join forces with a female alien. Dracmus was arrested as a ringleader in a plot against the corrupt Human League. Now she and Han will attempt a daring escape to Selonia in time to warn Leia, Luke Skywalker, and Lando of Thracken's plan. But can Han trust the alien to keep her word?Meanwhile other questions threaten the New Republic -- and the lives of millions. Who is behind the deadly Starbuster plot? Why is someone attempting to take possession of Corellia's powerful planetary repulsors? And what is the secret behind the mysterious Centerpoint Station, and ancient, artificial world o unknown origin that has suddenly -- and inexplicably -- come alive? less

In this third and final volume of the Corellian  trilogy, Han and Luke lead the Alliance in a mad  scramble against the Selonian rebels for control of  the planetary technology.