Power structure of hybrid system

PURPOSE: A power structure of a hybrid system is provided to improve fuel efficiency by increasing the EV(Electric Vehicle) driving speed without an increase in a size of a motor of a hybrid vehicle. CONSTITUTION: A power structure of a hybrid system comprises a planet gear unit, a first motor(110), a second motor(120), an engine(131), and a brake(132). The planet gear unit comprises a sun gear(101), a carrier(103), and a ring gear(102). The first motor is connected to the sun gear. The second motor is connected to the ring gear and is connected to a drive(150) for an output. The engine and the brake are connected to the carrier.