Harrison Harry. To the Stars Trilogy

Publication details not specified.
The first novel of the trilogy, Homeworld, features Jan Kulozik, one of Earth's privileged elite. A brilliant young electronics engineer, he enjoyed all the blessings of a 23rd-century civilization that survived the global collapse and conquered the stars, unaware of the millions who slaved or starved to maintain his way of life.
Then Jan met Sara, a beautiful agent of the rebel underground dedicated to smashing Earth's rigid caste system. Through her he discovered the truth behind the lies he'd been taught. His every move watched by state surveillance, Jan risked his position and his life to restore humanity's heritage.
The second novel of the trilogy, Wheelworld, finds Jan Kulozik in exile: sentenced to service the machines of Halvork, the farmworld that grows crops to fill the holds of Earth's grain-ships. This Wheelworld, baked by eternal summer, is a world of peasants enslaved by a handful of powerful families.
Then disaster. One year the ships do not come; starvation threatens Halvmork. Jan rallies the people for their own survival, and guides them on a perilous trek across half a planet. Battling heat and savage creatures, earthquakes and volcanoes, fighting the violence and treachery of the Families, Jan leads the people of Wheelworld to their new destiny.
In the third novel of the trilogy, Starworld, Jan Kulozik, rebel in exile, returns home as a prisoner on a ship bearing a cargo of death. But Kulozik escapes his captors and ignites the flames of revolt across half a world. With the aid of Dvora, a lovely but lethal comrade-at-arms, Jan races toward a rendezvous with destiny, and a reckoning with a treacherous double agent who holds the fate of the human race in his hands.