A method of controlling a drive system torque of an electric vehicle for generating a torque by evading a backlash band to prevent the occurrence of backlash in the drive system includes determining, by a controller, whether a plurality of predetermined entry conditions for entering a responsiveness priority mode of the vehicle are satisfied in a predetermined order based on vehicle driving information in a state in which control of a power priority mode is performed, and transitioning, by the controller, a mode to the responsiveness priority mode when it is determined that the plurality of entry conditions are sequentially satisfied and performing control of the responsiveness priority mode.

A control system for a vehicle drive motor includes a motor torque obtaining portion, a current distributing state obtaining portion obtaining a state of current distribution to coils of respective phases of a stator of the motor, a temperature sensor detecting temperature of a specific phase coil, a motor torque control portion updating other phase estimated temperatures by using the coil sensor temperature and an added-up value of a temperature rise per unit time of each of other phase coils at each time point, the motor torque control portion controlling the motor torque by using the other phase estimated temperatures, wherein the temperature rise per unit time of each of the other phase coils at each time point is determined by the motor torque control portion in accordance with a combination of the motor torque and the state of current distribution at each time point.

A control system for a vehicle drive motor includes a motor torque obtaining portion, a current distributing state obtaining portion obtaining a state of current distribution to coils of respective phases of a stator of the motor, a temperature sensor detecting temperature of a specific phase coil, a motor torque control portion updating other phase estimated temperatures by using the coil sensor temperature and an added-up value of a temperature rise per unit time of each of other phase coils at each time point, the motor torque control portion controlling the motor torque by using the other phase estimated temperatures, wherein the temperature rise per unit time of each of the other phase coils at each time point is determined by the motor torque control portion in accordance with a combination of the motor torque and the state of current distribution at each time point.

A locomotive propelled by a hybrid power system includes a boost mode of operation accessible on-demand by the operator. When a throttle is set to deliver maximum power from a diesel-electric engine, an operator can select actuators separate from the throttle to request that a control module deliver additional electrical power from batteries. The actuators may be soft keys or a touchscreen on a computer monitor or mechanical switches as part of the locomotive cab. The actuators provide boost notches of additional power beyond the typical eight notches on the throttle at least for transient conditions, and existing locomotives may be easily and inexpensively retrofitted with the actuators.

A method of controlling a torque of a drive system of an electric vehicle, includes determining, by a controller, a total torque command based on required torque according to a vehicle driving state while driving of the vehicle, determining whether a backlash band evasion mode is in an ON state or an OFF state, front wheel torque control or rear wheel torque control for evading a backlash band being performed in the mode, determining whether transition of the vehicle driving state to the ON state of the backlash band evasion mode is allowed when the backlash band evasion mode is in the OFF state, and controlling the backlash band evasion mode using a front wheel torque command and a rear wheel torque command determined from the total torque command in the ON state of the backlash band evasion mode when the transition is allowed.

A method of controlling a torque of a drive system of an electric vehicle, includes determining, by a controller, a total torque command based on required torque according to a vehicle driving state while driving of the vehicle, determining whether a backlash band evasion mode is in an ON state or an OFF state, front wheel torque control or rear wheel torque control for evading a backlash band being performed in the mode, determining whether transition of the vehicle driving state to the ON state of the backlash band evasion mode is allowed when the backlash band evasion mode is in the OFF state, and controlling the backlash band evasion mode using a front wheel torque command and a rear wheel torque command determined from the total torque command in the ON state of the backlash band evasion mode when the transition is allowed.

An electric vehicle includes a motor unit configured to drive a wheel, the motor unit including motor coils; a control system including an inverter; a temperature sensor configured to sense temperature of the motor coils or the inverter; and a limiter configured to, if the temperature sensed by the temperature sensor is equal to or greater than a motor coils temperature threshold, reduce a motor current of the motor unit until a derivative dTmc/dt of the sensed temperature with time drops to zero or below, or to, if the temperature sensed by the temperature sensor is equal to or greater than an inverter temperature threshold, limit a current command to the inverter until a derivative dTic/dt of the sensed temperature with time drops to zero or below. The limiter is further configured to stop reducing a motor current of the motor or limiting the current command to the inverter.

An electric vehicle includes a motor unit configured to drive a wheel, the motor unit including motor coils; a control system including an inverter; a temperature sensor configured to sense temperature of the motor coils or the inverter; and a limiter configured to, if the temperature sensed by the temperature sensor is equal to or greater than a motor coils temperature threshold, reduce a motor current of the motor unit until a derivative dTmc/dt of the sensed temperature with time drops to zero or below, or to, if the temperature sensed by the temperature sensor is equal to or greater than an inverter temperature threshold, limit a current command to the inverter until a derivative dTic/dt of the sensed temperature with time drops to zero or below. The limiter is further configured to stop reducing a motor current of the motor or limiting the current command to the inverter.

Method for operating an assistance system of a vehicle with at least one electrical energy store, comprising the following steps:detecting a temperature of the electrical energy store of the vehicle by means of at least one first sensor,identifying an operating state of the electrical energy store by means of the detected temperature of the electrical energy store by a control unit,determining the position of the vehicle and/or detecting an operating parameter of the vehicle more particularly by means of at least one second sensor, communicating the operating state to the assistance system of the vehicle, wherein at least one signal is generated by the assistance system in the case of an abnormal operating state of the electrical energy store if the position of the vehicle is within a predefinable geographical area.

A construction machine is disclosed having a body, one or more movement elements, and a control panel comprising a propulsion controller operable between a lower propulsion controller limit and an upper propulsion controller limit. The construction machine further comprises: a propulsion electric motor adapted to drive the one or more movement elements, one or more batteries adapted to power the propulsion electric motor, a control circuit adapted to receive a propulsion controller input indicative of a state of the propulsion controller between the lower propulsion controller limit and the upper propulsion controller limit, and to operate the propulsion electric motor in accordance with a propulsion variable based on the propulsion controller input. While operating the propulsion electric motor in accordance with the propulsion variable, the control circuit is further adapted to: receive a propulsion current signal indicative of an amount of current drawn by the propulsion electric motor, and in accordance with the propulsion current signal satisfying propulsion reduction criteria, reduce the propulsion variable by a propulsion reduction amount such that the propulsion variable is below a maximum propulsion variable.