A method of operating a vehicular system includes charging, by a controller and via an electric vehicle charge station, a low-voltage battery when a module powered by the low-voltage battery is awake and an SOC of the low-voltage battery is less than a threshold; and in response to the SOC exceeding the threshold, commanding by the controller the module to enter a sleep mode for a sleep duration defined by a power usage of the module such that as the power usage changes, the sleep duration changes.

A DC link capacitor coupled to positive and negative DC busses between a high voltage DC source and an electric vehicle inverter is quickly discharged during a shutdown. An active discharge circuit connected across the link capacitor has a discharge resistor in series with a discharge switch. The discharge switch has a control terminal for selectably turning the discharge switch on and off. A disable circuit is coupled to the control terminal and is responsive to a disable command signal to turn off the discharge switch. The disable circuit turns on the discharge switch upon cessation of the disable command signal. A timing circuit powered by a voltage from the link capacitor initiates a predetermined time interval upon cessation of the disable command signal, and continuously turns off the discharge switch after the predetermined time interval while the voltage from the link capacitor remains above a threshold.

To arrange a power unit, an electric power conversion unit, and engine-related components compactly, a drive motor, a reduction drive, a generator, and an engine body are integrally arranged in this order in a vehicle width direction of a power unit compartment such that respective heights thereof are substantially the same. An electric power conversion unit, in which a motor inverter, an electric power generation inverter, and a DC/DC converter are integrated, is arranged above the drive motor, the reduction drive, and the generator. Engine-related components such as a low-voltage battery, an air cleaner, and an oil filter are arranged above the engine body.

To arrange a power unit, an electric power conversion unit, and engine-related components compactly, a drive motor, a reduction drive, a generator, and an engine body are integrally arranged in this order in a vehicle width direction of a power unit compartment such that respective heights thereof are substantially the same. An electric power conversion unit, in which a motor inverter, an electric power generation inverter, and a DC/DC converter are integrated, is arranged above the drive motor, the reduction drive, and the generator. Engine-related components such as a low-voltage battery, an air cleaner, and an oil filter are arranged above the engine body.

An apparatus includes a multi-channel DC bus assembly comprising a first channel and a second channel, a first electromechanical device coupled to a positive DC link of the first channel, and a second electromechanical device coupled to a positive DC link of the second channel. A first DC-to-AC voltage inverter is coupled to the positive DC link of the first channel and a second DC-to-AC voltage inverter is coupled to the positive DC link of the second channel. The apparatus further includes a bi-directional voltage modification assembly coupled to the positive DC link of the second channel and a first energy storage system electrically coupled to the first electromechanical device.

One variation of a system for generating thrust at an aerial vehicle includes: a primary electric motor; a rotor coupled to the motor; an internal-combustion engine; a clutch interposed between the motor and an output shaft of the internal-combustion engine; an engine shroud defining a shroud inlet between the rotor and the internal-combustion engine, extending over the internal-combustion engine, and defining a shroud outlet opposite the rotor; a cooling fan coupled and configured to displace air through the engine shroud; and a local controller configured to receive a rotor speed command specifying a target rotor speed, adjust a throttle setpoint of the internal-combustion engine according to the target rotor speed and a state of charge of a battery in the aerial vehicle, and drive the primary electric motor to selectively output torque to the rotor and to regeneratively brake the rotor according to the target rotor speed.

A vehicle control device operates an electric generator by an internal combustion engine and can intermittently drive an electric motor. The vehicle control device includes an electric storage unit and a control unit. The electric storage unit supplies electric power to the electric motor and can be charged by regenerative electric power from the electric generator. The control unit stops the intermittent driving mode provided that the vehicle speed is equal to or smaller than a predetermined speed and a status amount corresponding to an electric storage state of the electric storage unit is equal to or smaller than a predetermined value.

A power supply device includes a battery, an inverter, a converter, an electronic control unit. The inverter includes an upper arm having a third switching element and a lower arm having a fourth switching element. The converter includes an upper arm having a first switching element and a lower arm having a second switching element. The electronic control unit is configured to, when a state where the primary-side voltage is at least equal to the specified threshold continues for a specified time or longer, i) increase the primary-side voltage by repeatedly switching the second switching element between ON and OFF state while maintaining the first switching element to be OFF state, and apply the increased voltage as the secondary-side voltage to the inverter, and ii) convert the secondary-side voltage to the AC voltage by repeatedly switching each of the third and the fourth switching element between ON and OFF state.

A system and method control a powered system having an engine configured to operate using a plurality of fuel types. A first set of control signals including a first set of valve signals are communicated to each fuel tank based at least in part on a first stored engine operating profile to control amounts of fuel provided from each fuel tank to the engine. A different, second set of control signals including a second set of valve signals are communicated to the fuel tanks based at least in part on a second stored engine operating profile to control or change the amounts of fuel from each fuel tank to the engine. The system and method can switch between operating conditions associated with different external domains to alter the engine operating profile used to control the fuel or fuels supplied to the engine.

An alternator voltage may be controlled based on a proportional gain scheduling in response to an engine load of an internal combustion engine and/or a state of charge (SOC) deviation for a battery based on a target SOC of the battery and an actual SOC of the battery. The alternator voltage may be a voltage less than a current battery voltage under high engine loads to enable the battery to power an accessory system and the alternator voltage may be a voltage greater than a voltage of the battery under low engine loads or engine loads less than high engine loads to enable the alternator to charge the battery.