The rotational drive system (100) comprises: - a voltage source (102); - an electric motor (104) comprising a stator with independent phases (a, b, c), and a rotor (106); - an inverter (108) intended to connect each phase (a, b, c) to the voltage source (1...

An electric lawn tractor roll away prevention system includes a brushless DC electric motor powering a traction drive wheel on the electric lawn tractor. The motor is connected to phase wires and provides a back EMF voltage on the phase wires if the electr...

In an electrically driven vehicle propelled by an electric machine (motor)equipped with a collaborative braking system of regenerative and frictional braking capacities, in order to achieve the "rollback prevention" at starting on an sloping road, when the...