A utility vehicle includes an electric motor for driving a propelling device, a battery for supplying electric power to the electric motor, a temperature sensor configured to detect a temperature of the battery, a discharge current setting unit for setting an upper limit discharge current value based on the detected temperature detected by the temperature sensor, and a control unit for regulating discharge current of the battery within the upper limit discharge current value determined by the discharge current setting unit and for controlling driving of the electric motor.

The present disclosure is directed to an electric generator and motor transmission system that is capable of operating with high energy, wide operating range and extremely variable torque and RPM conditions. In accordance with various embodiments, the disclosed system is operable to: dynamically change the output size of the motor/generator by modularly engaging and disengaging rotor/stator sets as power demands increase or decrease; activate one stator or another within the rotor/stator sets as torque/RPM or amperage/voltage requirements change; and/or change from parallel to series winding configurations or the reverse through sets of 2, 4, 6 or more parallel, three-phase, non-twisted coil windings with switchable separated center tap to efficiently meet torque/RPM or amperage/voltage requirements.

A machine having a series electric drivetrain system includes an engine to provide mechanical energy to an electric generator, the electric generator able to convert the mechanical energy received from the engine into electrical energy, the electric generator including an input shaft extending through the electric generator, a rotor to rotate on the input shaft, and the input shaft is able to rotate an input gear, an idler gear, a pump drive gear, and a rotor gear, a motor to receive the electrical energy and to produce a rotational output, a single speed ratio direct drive to transfer the rotational output of the motor to a torque output to deliver to a drive shaft, and power electronics to control the electrical energy between the electric generator and the motor and to regulate the rotational output of the motor.

A power control method of an electric storage apparatus that includes an output terminal, an electric storage device connected to the output terminal via a power supply route in the electric storage apparatus, and a monitoring apparatus including a detector, a communication unit, and a controller, includes detecting a variation value corresponding to an amount of charge of the electric storage device, shutting down the power supply route in the electric storage apparatus, which connects the electric storage device to the output terminal, and causing the communication unit to receives an input signal from outside.

The purpose of the present invention is to provide a torque command generation device for generating a motor-generated-torque command that makes it possible to maximize excitation force while ensuring necessary acceleration, and the like, within a limited motor torque range. A torque command generation device (6) is provided with: a maximum torque calculation unit (633) for calculating, according to a motor speed, a maximum torque value for a motor-generated-torque-command signal value; a DC component limiter (635) for calculating a DC signal value; a surplus amplitude calculation unit (637) for calculating a surplus amplitude by subtracting the maximum torque value from the sum of the DC component value calculated by the DC component limiter (635) and an externally input excitation amplitude; a sine-wave transmitter (639) for generating a sine wave having an amplitude obtained by subtracting the surplus amplitude from a base amplitude; and a summing unit (640) for calculating the motor-generated-torque-command signal value by adding the DC component value and the sine wave value.

A motor/generator/transmission system includes: an axle; a stator ring having a plurality of stator coils disposed around the periphery of the stator ring, wherein each phase of the plurality of stator coils includes a respective set of multiple parallel non-twisted wires separated at the center tap with electronic switches for connecting the parallel non-twisted wires of each phase of the stator coils all in series, all in parallel, or in a combination of series and parallel; a rotor support structure coupled to the axle; a first rotor ring and a second rotor ring each having an axis of rotation coincident with the axis of rotation of the axle, at least one of the first rotor ring or the second rotor ring being slidably coupled to the rotor support structure and configured to translate along the rotor support structure in a first axial direction or in a second axial direction.

A method for operating a motor vehicle includes operating the motor vehicle in a drive mode, a recuperation mode or a charging mode, wherein when operating the motor vehicle in the recuperation mode, a recuperation driving route driven during the recuperation mode and an associated recuperation energy amount are determined and are stored as driving route data in a driving route memory and/or are transmitted to an external data storage device; wherein when switching into the charging mode or when operating the motor vehicle in the charging mode an expected driving route of the motor vehicle is predictively determined and for the expected driving route the driving route data are read out from the driving route memory and/or are requested from external data storage device; wherein the target state of charge is set to a value which is determined from a maximal state of charge of the energy storage and the recuperation energy amount stored in the driving route data.

A shovel is provided that includes a lower running body, an upper turning body pivotally mounted on the lower running body, an engine mounted on the upper turning body, a motor generator driven by the engine, a power storage device for storing electric power generated by the motor generator, an electric motor for supplying regenerative electric power to the power storage device, a selective reduction catalyst system for purifying exhaust gas by injecting a reducing agent stored in a reducing agent storage tank into an exhaust pipe of the engine, an abnormality detection unit for detecting an abnormality of the selective reduction catalyst system, and a control device that performs abnormality determination on the selective reduction catalyst system based on a detection result of the abnormality detection unit. The control device continues to control the electric motor before and after the abnormality determination.

A vehicle power management device managing: a vehicle path information generation device generating a vehicle travel path; a drive assembly consuming power to drive the vehicle; a power generator; an electrical load device group; a high-voltage storage device storing power for driving the vehicle; a low-voltage storage device storing power for operating the electrical load device group; and a DC voltage conversion and output device converting voltage of power stored in the high-voltage storage device to generate DC voltage for operating the electrical load device group, and outputting the DC voltage, and controlling electric energy flow in the vehicle. The vehicle power management device controls output of the DC voltage conversion and output device so that a filling rate of the low-voltage storage device is between lower and upper limits of a range in which a charge and discharge speed is equal to or higher than a predetermined value.

A driving device for motors for drive wheels of a vehicle includes a plurality of in-wheel motor assemblies and motor drivers. The motor drivers include a smoothing circuit, an inverter unit to convert the direct current power, inputted through the smoothing circuit, into a three phase alternating current power, an inverter control unit for controlling the inverter unit, and a cooler for cooling the inverter unit. The plurality of the motor drivers are disposed within a single common casing and the plurality of the motor drivers share the smoothing circuit. The inverter control unit of the plurality of the motor drivers is of a control type capable of driving the driving element of the inverter unit according to the PWM scheme and the plurality of the motor drivers have equal cycles of PWM relative to each other and are configured to displace ON and OFF timings of the driving element.