Heat energy into electrical energy is fuel combustion, such as coal to boil-water vaporization and boiling it, that is going to push the turbine rotation. When the rotating turbine generator was working too.
Conversion of thermal energy into electrical energy. Fuels such as coal is burned to boil water into steam. Then I have to push the turbine to rotate. When the turbine spins a generator, it works well.
Transform thermal energy into electrical energy is burning fuel such as coal, to boil the water into steam.) What going to push the turbine to rotate. When the rotating turbine generator's work.