The solar power system for auxiliary-powered brakes and power system for a tractor-trailer is a supplemental electrical system adapted for use with the trailer of a tractor-trailer. The solar power system for auxiliary-powered brakes and power system for a tractor-trailer is designed to: 1) assist in the acceleration of the trailer; 2) use braking energy to generate and store electricity; 3) supplement the stored energy with a renewable source; and, 4) distribute excess energy to the trailer electrical system. In one potential embodiment of the disclosure, the solar power system for auxiliary-powered brakes and power system for a tractor-trailer provides for tapping into the stored electrical energy for external use. The solar power system for auxiliary-powered brakes and power system for a tractor-trailer comprises a plurality of photovoltaic cells, one or more axle assist devices, an electricity storage device, and a distribution system.

The solar power system for auxiliary-powered brakes and power system for a tractor-trailer is a supplemental electrical system adapted for use with the trailer of a tractor-trailer. The solar power system for auxiliary-powered brakes and power system for a tractor-trailer is designed to: 1) assist in the acceleration of the trailer; 2) use braking energy to generate and store electricity; 3) supplement the stored energy with a renewable source; and, 4) distribute excess energy to the trailer electrical system. In one potential embodiment of the disclosure, the solar power system for auxiliary-powered brakes and power system for a tractor-trailer provides for tapping into the stored electrical energy for external use. The solar power system for auxiliary-powered brakes and power system for a tractor-trailer comprises a plurality of photovoltaic cells, one or more axle assist devices, an electricity storage device, and a distribution system.

In a control apparatus of a walk-behind electric lawn mower equipped with an electric motor, a blade cutter connected to the electric motor, a rechargeable battery connected to the electric motor, a motor driver circuit to adjust supply of operating electric power to the electric motor, ON/OFF of a first switching element disposed in a current path connecting the battery and the electric motor and a second switching element interposed in the current path in series with a braking resistor to allow charge current from the electric motor to the braking resistor, wherein operation of the first and second switching elements are controlled based on detected battery temperature and internal voltage of the motor driver circuit.

An apparatus for controlling operation of a walk-behind electric lawn mower equipped with an electric motor, a blade cutter connected to the electric motor and a rechargeable battery mounted connected to the electric motor and a motor driver circuit. In the apparatus, when an instruction to stop the electric motor is inputted, the operation of the motor driver circuit is controlled to output regenerative electric current from three-phase coils of the electric motor. At that time, it is determined whether a rotational speed of the electric motor is equal to or less than a switching rotational speed and when it is, the motor driver circuit is controlled to switch from the regenerative braking to short-circuit braking that short-circuits the three-phase coils of the electric motor.

Includes electric motor (330) driving driving wheel (610) , speed control unit (300) controlling driving of electric motor (330) based on instructed speed ω.sub.r*, brake control unit (400) controlling hydraulic brake (500) applying mechanical braking to an electromotive vehicle, speed sensor (340) detecting traveling speed ω.sub.r of the electromotive vehicle, and determination unit (200) determining whether the mechanical braking needs to be applied in response to the difference between instructed speed ω.sub.r* and traveling speed ω.sub.r, and controlling operation of brake control unit (400) based on the determination result. Determination unit (200) determines that mechanical braking needs to be applied when instructed speed ω.sub.r* indicates deceleration and traveling speed ω.sub.r is higher than instructed speed ω.sub.r* , and performs control so that brake control unit (400) works hydraulic brake (500) .

Includes electric motor (330) driving driving wheel (610) , speed control unit (300) controlling driving of electric motor (330) based on instructed speed ω.sub.r*, brake control unit (400) controlling hydraulic brake (500) applying mechanical braking to an electromotive vehicle, speed sensor (340) detecting traveling speed ω.sub.r of the electromotive vehicle, and determination unit (200) determining whether the mechanical braking needs to be applied in response to the difference between instructed speed ω.sub.r* and traveling speed ω.sub.r, and controlling operation of brake control unit (400) based on the determination result. Determination unit (200) determines that mechanical braking needs to be applied when instructed speed ω.sub.r* indicates deceleration and traveling speed ω.sub.r is higher than instructed speed ω.sub.r* , and performs control so that brake control unit (400) works hydraulic brake (500) .

A fuel cell system includes a drive motor, a fuel cell, an auxiliary machine, a secondary battery, a temperature sensor, a current sensor, and a control section. The control section controls the secondary battery for discharging by driving the drive motor or the auxiliary machine and for charging through power generation by the fuel cell or regeneration by the drive motor when a temperature measured by the temperature sensor is lower than a specified value.

Systems and methods for mitigating wear of electric vehicles are provided. A method of operating an electric powersport vehicle includes receiving an accelerator command and driving an electric motor of the vehicle based on whether or not the accelerator command is accompanied by a braking command. When the accelerator command exists at a same time as the braking command, the output of the electric motor is limited to a lower output torque value than when the accelerator command exists at a different time as the braking command.

A hybrid vehicle may be a series hybrid or a parallel hybrid vehicle. One embodiment of a parallel hybrid vehicle includes an engine, a transmission coupled to the engine, a front drive coupled to the transmission through a prop shaft, a rear drive coupled to the transmission, a traction motor drivingly coupled to the prop shaft, and a battery to operate the traction motor.

A hybrid vehicle may be a series hybrid or a parallel hybrid vehicle. One embodiment of a parallel hybrid vehicle includes an engine, a transmission coupled to the engine, a front drive coupled to the transmission through a prop shaft, a rear drive coupled to the transmission, a traction motor drivingly coupled to the prop shaft, and a battery to operate the traction motor.