A work vehicle includes a hybrid transmission to vary power from an engine and output the power to a travel device, the hybrid transmission including an electric transmission including a motor generator and a gear transmission including a gear driver. The work vehicle includes an inverter to drive the motor generator. The work vehicle includes a pump to cool the inverter by supplying, to the inverter, a refrigerant to cool the motor generator.

Proposed is a motor drive apparatus driving first and second motors having first wirings and second wirings, respectively, including a first inverter including first switching elements, an alternating-current terminal of the first inverter being connected to a first terminal of each of the first wirings, a second inverter including second switching elements, a first change-over switch including third switching elements, first-side terminals thereof being connected to second terminals of the first wirings, respectively, and second-side terminals being connected, a second change-over switch including fourth switching elements, first-side terminals thereof being connected to the second terminals, respectively, and second-side terminals being connected to an alternating-current terminal of the second inverter, a third change-over switch including fifth switching elements, first-side terminals thereof being connected to the alternating-current terminal, and second-side terminals being connected to the second wirings, respectively, and a controller controlling turned-on and -off states of the first to fifth switching elements.

There has been a drawback in that current command values need to be set for a current command unit of a power conversion device in accordance with efficiency, and thus the number of operation steps increases. In the power conversion device connected between a three-phase AC rotating machine and a DC power supply and configured to convert DC power into AC power, a DC voltage value, of the DC power supply, that is to be inputted to a current command unit of the power conversion device is corrected on the basis of an efficiency index, and a current command value to be outputted by the current command unit is changed on the basis of the corrected DC voltage value and a torque command value, whereby the efficiencies of the power conversion device and the three-phase AC rotating machine are controlled.

Lightweight high-efficiency, high temperature electric drive system is disclosed herein. An example electric drive system including an electric motor including an output shaft. The example electric drive system including power electronics electrically coupled to the electric motor, wherein the power electronic include an inverter. The example electric drive system including a gearbox coupled to the output shaft. The example electric drive system including a first heat exchanger coupled to a surface of the electric motor, the first heat exchanger including coolant. The example electric drive system including a second heat exchanger coupled to a surface of the power electronics, the second heat exchanger including the coolant.

A vehicle lower structure includes: first and second battery units that are arranged under a floor panel and on both sides in a vehicle width direction of a propeller shaft; right and left floor frames disposed on a lower surface side of the floor panel. The floor frame has a front inclined section and a width increased section. The first and second battery units are arranged between the width increased sections 52 of the right and left floor frames. A battery-related electrical component, a width of each of which in the vehicle width direction is less than a width of each of the first and second battery units, is arranged between the front inclined sections.

A drive block, i.e. a block-like electric drive, includes two drives for driving respective wheels. Each of the two drives can be driven by a separate electric machine, i.e. by a first electric machine and a second electric machine, respectively. The drive block further includes an inverter block and a parking lock. The inverter block and the parking lock can be situated on different sides of a structural plane defined through centers of rotation of the first and second electric machines.

An electrically powered, self-propelled cart for safely delivering heavy loads, such as concrete, within job sites with unlevel, irregular, or sloped terrain. A cargo bucket is tiltable over front drive wheels for transporting and dumping cargo. Electric drive motors associated with a transaxle propel wheels at a selectable speed in response to an electric control module. A steering column rotates in response to manually operated handle bars and activates a sensor to generate signals delivered to the control module for throttle adjustments. The sensor may be a linear potentiometer, a rotary differential transformer or a rotary encoder or shaft encoder measuring angular displacement. Extreme steering displacements will electrically reduce cart speed notwithstanding the previous speed setting chosen by the operator through the steering column.

Methods and systems are provided for an electric heavy-duty vehicle. In one example, the vehicle includes a battery pack for supplying current to an electric motor of the vehicle, the battery pack arranged in a chassis of the vehicle and configured to form part of a floor of the vehicle. The vehicle also includes a motor coupled to front wheels of the vehicle, the front wheels having hub assemblies housing drive shaft adapters configured to permanently couple the hub assemblies to drive shafts of the front wheels, and a cradle configured to be mounted with electrical sub-systems of the vehicle.

An electrified vehicle may include an engine, an electric machine selectively coupled to the engine, a high-voltage traction battery electrically coupled to the electric machine and configured to selectively propel the electrified vehicle, an on-board generator including an inverter electrically coupled to the high-voltage traction battery and configured to convert direct current input to alternating current output, power outlets configured to receive power from the inverter of the on-board generator, a user interface, and a controller programmed to control the engine, the electric machine, and the high-voltage traction battery to provide power to on-board generator and to control the inverter to limit the power output by the inverter to the power outlets to one of a user-specified power limit based on input from the user interface, a powertrain power limit associated with the engine, the electric machine, and the high-voltage traction battery, and an inverter hardware power limit.

A tire/wheel assembly includes a wheel including a disk and a rim, the wheel having a power reception device attached to an outer peripheral surface of the rim to receive electric power supplied wirelessly from farther outward in a radial direction of the wheel than the rim, and a tire attached so as to cover an outer peripheral surface of the wheel and including a pair of sidewall portions. A gauge of the sidewall portions is 1.5 mm or more.