The vehicle includes an AC motor generator (MG) connected to a driving wheel, a battery, an inverter configured to convert DC power supplied from the battery to AC power and supply the AC power to the MG, and a vehicle ECU configured to control the inverter. The vehicle ECU performs a zero torque control to drive the inverter so that the output torque from the MG is zero when the battery is prohibited from being charged while the MG is being driven to rotate by the motive power from the driving wheel.

Systems and methods of generating, storing and/or distributing electric power are disclosed. The system may include two or more direct current battery subsystems, a direct current motor/alternating current generator combination, an electric power distribution network, and battery recharging elements. One battery subsystem may power an alternating current generator while the other battery subsystem charges using a portion of the generated power. Excess power may service other electric loads. The roles of the battery subsystems may be switched periodically between charging and powering, repeatedly.

Systems and methods of generating, storing and/or distributing electric power are disclosed. The system may include two or more direct current battery subsystems, a direct current motor/alternating current generator combination, an electric power distribution network, and battery recharging elements. One battery subsystem may power an alternating current generator while the other battery subsystem charges using a portion of the generated power. Excess power may service other electric loads. The roles of the battery subsystems may be switched periodically between charging and powering, repeatedly.

Methods and systems for operating a hybrid electric aircraft propulsion system. The method comprises providing alternating current (AC) electric power to a first electric motor to drive a first rotating propulsor, providing the first electric motor with AC electric power from at least one motor inverter operatively coupled to a direct current (DC) power source, detecting a failure in a path to the first electric motor, and selectively rearranging a first switching arrangement between the generator, the at least one motor inverter, and the first electric motor.

Methods and systems for operating a hybrid electric aircraft propulsion system. The method comprises providing alternating current (AC) electric power to a first electric motor to drive a first rotating propulsor, providing the first electric motor with AC electric power from at least one motor inverter operatively coupled to a direct current (DC) power source, detecting a failure in a path to the first electric motor, and selectively rearranging a first switching arrangement between the generator, the at least one motor inverter, and the first electric motor.

A portable power generation system includes a power generation unit and a monitoring unit. The power generation unit is detachable from the wheeled occupant apparatus and includes a pivoting arm, a rotating gear, and a control unit. The rotating gear is in communication with the wheeled occupant apparatus and is configured to rotate upon movement of the wheeled occupant apparatus, such that rotation of the rotating gear induces an electrical power generation effect. The control unit is in communication with the rotating gear through the pivoting arm and regulates the storage and transmission of electrical power. The monitoring unit is in electrical communication with the power generation unit and dispenses electrical power and provides user data to a user.

A portable power generation system includes a power generation unit and a monitoring unit. The power generation unit is detachable from the wheeled occupant apparatus and includes a pivoting arm, a rotating gear, and a control unit. The rotating gear is in communication with the wheeled occupant apparatus and is configured to rotate upon movement of the wheeled occupant apparatus, such that rotation of the rotating gear induces an electrical power generation effect. The control unit is in communication with the rotating gear through the pivoting arm and regulates the storage and transmission of electrical power. The monitoring unit is in electrical communication with the power generation unit and dispenses electrical power and provides user data to a user.

Systems and methods of generating, storing and/or distributing electric power are disclosed. The system may include two or more direct current battery subsystems, a direct current motor/alternating current generator combination, an electric power distribution network, and battery recharging elements. One battery subsystem may power an alternating current generator while the other battery subsystem charges using a portion of the generated power. Excess power may service other electric loads. The roles of the battery subsystems may be switched periodically between charging and powering, repeatedly.

Systems and methods of generating, storing and/or distributing electric power are disclosed. The system may include two or more direct current battery subsystems, a direct current motor/alternating current generator combination, an electric power distribution network, and battery recharging elements. One battery subsystem may power an alternating current generator while the other battery subsystem charges using a portion of the generated power. Excess power may service other electric loads. The roles of the battery subsystems may be switched periodically between charging and powering, repeatedly.

A powertrain system includes an electric motor for driving a vehicle; a battery; an internal combustion engine; an electric generator; a motor inverter connected in parallel to the battery, and converting DC electric power of the battery into AC electric power and supplying it to the electric motor; a generator inverter connected in parallel to the battery, and converting AC electric power generated by the electric generator into DC electric power and supplying it to the battery; and a control device. The control device is configured, where a charging rate of the battery is not greater than a first threshold value, and a ripple current that is generated in association with an operation of the motor inverter and flows into the battery is not less than a second threshold value, not to start up the internal combustion engine for electric power generation using the electric generator.