An apparatus for an electrically powered terrestrial vehicle applies electrical energy to front wheels and to rear wheels. A control system receives desired acceleration inputs and provides target torque requirements to a plurality of adaptive field-oriented motor control circuits. One or more three-phase alternating current synchronous motors receive voltage magnitude and voltage frequency to generate torque, which is applied through a reduction gear. One motor only may be powered during certain modes of operation.

An apparatus for an electrically powered terrestrial vehicle applies electrical energy to front wheels and to rear wheels. A control system receives desired acceleration inputs and provides target torque requirements to a plurality of adaptive field-oriented motor control circuits. One or more three-phase alternating current synchronous motors receive voltage magnitude and voltage frequency to generate torque, which is applied through a reduction gear. One motor only may be powered during certain modes of operation.

A multi-input charging system and method using a motor driving system can prevent relay fusing or cutting in a motor and damage of a neutral point capacitor provided in a charging power input stage in a process of receiving external charging power through a neutral point of the motor and charging a battery.

A multi-input charging system and method using a motor driving system can prevent relay fusing or cutting in a motor and damage of a neutral point capacitor provided in a charging power input stage in a process of receiving external charging power through a neutral point of the motor and charging a battery.

A drive force control system for a vehicle having a motor and a battery that allows a driver to sense a satisfactory acceleration even if an output torque of a motor is restricted. The drive force control system comprises a controller that calculates an upper limit acceleration of the vehicle based on an upper limit power to be supplied from the battery to the motor. The controller sets a reference jerk as the required jerk when the upper limit acceleration is equal to or greater than the target acceleration, and sets a corrected jerk that is greater than the reference jerk as the required jerk when the upper limit acceleration is less than the target acceleration.

A drive force control system for a vehicle having a motor and a battery that allows a driver to sense a satisfactory acceleration even if an output torque of a motor is restricted. The drive force control system comprises a controller that calculates an upper limit acceleration of the vehicle based on an upper limit power to be supplied from the battery to the motor. The controller sets a reference jerk as the required jerk when the upper limit acceleration is equal to or greater than the target acceleration, and sets a corrected jerk that is greater than the reference jerk as the required jerk when the upper limit acceleration is less than the target acceleration.

A magnetically de-coupled, separately controlled, electric machine assembly including a radial and one or more axial electric machines, each with rotors mechanically coupled to and arranged to directly drive a single shaft. Each of the electric machines are independently, but cooperatively, controlled by an inverter unit that includes one or more inverters. The axial and radial electric machines are contained in a single housing.

A magnetically de-coupled, separately controlled, electric machine assembly including a radial and one or more axial electric machines, each with rotors mechanically coupled to and arranged to directly drive a single shaft. Each of the electric machines are independently, but cooperatively, controlled by an inverter unit that includes one or more inverters. The axial and radial electric machines are contained in a single housing.

A motor arrangement system of an endurable and energy-saving electric vehicle includes a motor unit, a detection unit, and a control unit. The motor unit includes a number of motor devices and a speed-change device. The detection unit includes a rotational speed detector that detects a rotational speed to output a rotational speed signal and an operation detector that detects an electric current of the motor devices to output an operation signal. The control unit controls supply of electric power to one to some of the motor devices according to confirmation of the rotational speed signal and the operation signal. As such, a desired number of motor devices can be selected according to a desired level of horsepower, to thereby help reduce energy consumption and also to share the risk and cost of maintenance.

A motor arrangement system of an endurable and energy-saving electric vehicle includes a motor unit, a detection unit, and a control unit. The motor unit includes a number of motor devices and a speed-change device. The detection unit includes a rotational speed detector that detects a rotational speed to output a rotational speed signal and an operation detector that detects an electric current of the motor devices to output an operation signal. The control unit controls supply of electric power to one to some of the motor devices according to confirmation of the rotational speed signal and the operation signal. As such, a desired number of motor devices can be selected according to a desired level of horsepower, to thereby help reduce energy consumption and also to share the risk and cost of maintenance.