115results about "Energy regeneration from auxillary" patented technology

Described herein are improved capabilities for a system and method for wireless energy distribution across a vehicle compartment of defined area, comprising a source resonator coupled to an energy source of a vehicle and generating an oscillating magnetic field with a frequency, and at least one repeater resonator positioned along the vehicle compartment, the at least one repeater resonator positioned in proximity to the source resonator, the at least one repeater resonator having a resonant frequency and comprising a high-conductivity material adapted and located between the at least one repeater resonator and a vehicle surface to direct the oscillating magnetic field away from the vehicle surface, wherein the at least one repeater resonator provides an effective wireless energy transfer area within the defined area.

A hybrid machine with a hydraulic drive device having hydraulic actuators allowed to operate against and by external loads is provided. To this end, the hybrid machine comprises hydraulic cylinders (7), first hydraulic pumps (P1) connected, with closed circuits, to head side pressure receiving chambers (7S) and bottom side pressure receiving chambers (7L) of the hydraulic cylinders (7), and second hydraulic pumps (P2) connected, with open circuits, to the bottom side pressure receiving chambers (7L) and an external oil chamber (10), wherein the first and second hydraulic pumps (P1, P2) are connected to electric motors (M) so as to be driven.

A lift truck power source includes a hybrid power supply including a storage battery, a capacitor bank, and optionally a fuel cell. The capacitor bank stores power produced during regeneration by either the truck traction system or the lift system and delivers current when current demand exceeds that delivered by the fuel cell. The storage battery or fuel cell acts as a main power supply to deliver current at a rate sufficient to power the lift truck. When the fuel cell is the main power supply, the storage battery stores power during times when current demand is less than that delivered by the fuel cell and delivers current at times when current demand is greater than that delivered by the fuel cell. When the storage battery is the main power supply, the fuel cell supplements the power delivered by the storage battery, and can also recharge the storage battery.

A method is provided for controlling a work machine during operation in a repeated work cycle including controlling transfer of power to and from an energy storage arrangement in the work machine according to a predetermined control strategy, which is adapted for the characteristics of the work cycle.

A lift truck power source includes a hybrid power supply including a storage battery, a capacitor bank, and optionally a fuel cell. The capacitor bank stores power produced during regeneration by either the truck traction system or the lift system and delivers current when current demand exceeds that delivered by the fuel cell. The storage battery or fuel cell acts as a main power supply to deliver current at a rate sufficient to power the lift truck. When the fuel cell is the main power supply, the storage battery stores power during times when current demand is less than that delivered by the fuel cell and delivers current at times when current demand is greater than that delivered by the fuel cell. When the storage battery is the main power supply, the fuel cell supplements the power delivered by the storage battery, and can also recharge the storage battery.

A display device of a hybrid cargo handling vehicle and a hybrid cargo handling vehicle equipped with the display device are provided, with which whether operation is performed by engine drive or motor drive or engine plus motor drive and whether driving operation, i.e. energy consuming operation or energy recovering operation is performed is indicated on a monitor screen, and also fuel consumption rate of the engine, state of charge of the battery, and position of center of gravity of the vehicle are indicated on the monitor screen in both traveling and cargo handling operations, so that the operator is possible by monitoring the displayed indications to perform safe operation of the cargo handling vehicle with high efficiency and high cargo handling power without occurrence of slip down of the cargo or fall down of the vehicle.

An electrical system architecture is disclosed. The architecture has a power source configured to generate a first power, and a first bus configured to receive the first power from the power source. The architecture also has a converter configured to receive the first power from the first bus and convert the first power to a second power, wherein a voltage of the second power is greater than a voltage of the first power, and a second bus configured to receive the second power from the converter. The architecture further has a power storage device configured to receive the second power from the second bus and deliver the second power to the second bus, a propulsion motor configured to receive the second power from the second bus, and an accessory motor configured to receive the second power from the second bus.

A control method for an industrial vehicle can appropriately set a charge amount for a battery, and an industrial vehicle are provided. The control method includes an estimation step that estimates the charge rate of a battery by calculating the current that is charged to the battery and the current that is discharged from the battery; a charge amount determining step that determines the charge amount of the battery based on the estimated charge rate; a correction amount determining step that determines the charge power that is necessary for motors to generate the determined charge amount as a correction amount for the power that is supplied by the engine; and an addition step that adds the charge power to the supplied power of the engine that has been determined based on the state of the traveling and load-handling.

An electric drive system is provided for use in a vehicle that is operated in environments with stringent emissions and ventilation regulations. In one embodiment, the electric drive system comprises a motor capable of propelling the vehicle and an energy storage device coupled to the motor, and selectively couplable to a catenary line, wherein the catenary line is capable of supplying electrical power to the vehicle and to the energy storage device. Additionally, the vehicle includes a mining device that is operable to be powered by energy from one or more of the catenary line and the energy storage device.

A construction machine or industrial vehicle having a power supply system which includes a chargeable and dischargeable capacitor and a feeder circuit connecting a battery and the capacitor to a load capable of power running and regeneration. The capacitor is connected through a DC / DC converter which includes a controller that controls energy charged or discharged by the capacitor through the DC / DC converter to the load. The controller includes a power running / regeneration operation estimater which estimates an operation pattern including a point of change between power running and regeneration modes of the motor, or DC current supplied to an inverter, or control lever information and previously stored operation pattern information, and a capacitor target voltage calculator which controls an output command value of the DC / DC converter according to the estimated operation pattern so that a capacitor target voltage sequentially decreases in power running and sequentially increases in regeneration.

A dual purpose mobile machine is disclosed. The mobile machine may have a power source configured to propel the mobile machine and generate electrical power for use offboard the mobile machine. The machine may also have a work tool driven by the power source.

An electrical system architecture is disclosed. The architecture has a power source configured to generate a first power, and a first bus configured to receive the first power from the power source. The architecture also has a converter configured to receive the first power from the first bus and convert the first power to a second power, wherein a voltage of the second power is greater than a voltage of the first power, and a second bus configured to receive the second power from the converter. The architecture further has a power storage device configured to receive the second power from the second bus and deliver the second power to the second bus, a propulsion motor configured to receive the second power from the second bus, and an accessory motor configured to receive the second power from the second bus.

A construction machine or industrial vehicle having a power supply system which includes a chargeable and dischargeable capacitor and a feeder circuit connecting a battery and the capacitor to a load capable of power running and regeneration. The capacitor is connected through a DC / DC converter which includes a controller that controls energy charged or discharged by the capacitor through the DC / DC converter to the load. The controller includes a power running / regeneration operation estimater which estimates an operation pattern including a point of change between power running and regeneration modes of the motor, or DC current supplied to an inverter, or control lever information and previously stored operation pattern information, and a capacitor target voltage calculator which controls an output command value of the DC / DC converter according to the estimated operation pattern so that a capacitor target voltage sequentially decreases in power running and sequentially increases in regeneration.

An energy harvesting system for a vehicle includes a vehicle component having an outer surface facing an exterior of the vehicle and an inner surface facing an interior compartment of the vehicle, and an energy harvesting module disposed in the vehicle component. The energy harvesting module includes an accessory battery and first and second energy harvesting devices. The accessory battery is configured to supply power to a vehicle accessory. The first energy harvesting device is electrically coupled to the accessory battery and is configured to harvest ambient energy collected from the exterior of the vehicle. The second energy harvesting device is electrically coupled to the accessory battery and is configured to harvest ambient energy collected from the interior of the vehicle. The energy harvesting module converts the harvested ambient energy to electrical energy.

An electric drive system is provided for use in a vehicle that is operated in environments with stringent emissions and ventilation regulations. In one embodiment, the electric drive system comprises a motor capable of propelling the vehicle and an energy storage device coupled to the motor, and selectively couplable to a catenary line, wherein the catenary line is capable of supplying electrical power to the vehicle and to the energy storage device. Additionally, the vehicle includes a mining device that is operable to be powered by energy from one or more of the catenary line and the energy storage device.

A hybrid system working machine, during a normal working time, operated by a normal operation mode that the output of a power generator and the accumulated power of a capacitor are used while the engine is operated over a high-efficiency range at a low output. Switching of a selector switch to a high-speed running mode position and running operation enable long-distance and high-speed running of an increase in engine output by a high-output operation mode.

An operating machine comprises a first electric motor used for operations, a second electric motor used for applications other than the operations, a first inverter circuit connected to the first electric motor, a second inverter circuit connected to the second electric motor, a secondary battery connected to the first and second inverter circuits, and a controller for driving the first and second inverter circuits. The controller has a discharge mode for discharging electric power stored in the secondary battery. In the discharge mode, the controller disables the first inverter circuit and drives the second inverter circuit to electrically operate the second electric motor, thereby discharging the secondary battery. This makes it possible to reduce the changing rate and achieve the extension of the life of the capacitor.

A hybrid construction machine includes an engine (11), a hydraulic pump (14) driven by the engine (11), an electric motor (12) for assisting drive of the engine (11), and an electricity generator (12) driven by the engine (11) to generate electricity. The speed of the engine (11) is changed according to the magnitude of a load to the engine (11). When the load demanded by the engine (11) is reduced, electricity is generated by the electricity generator (12) to reduce the rotational speed of the engine (11). When the load demanded by the engine (11) is increased, the electric motor (12) is driven to accelerate the engine (11) by assisting the engine (11).

A hybrid construction machine is provided with a motor-generator system connected to an internal combustion engine and performing electric power generation by a motor-generator, an electricity storage system connected to the motor-generator system, load drive systems connected to the electricity storage system and driven by electricity, abnormality detection sections provided to the motor-generator system, the electricity storage system, and the load drive systems, and a main control section for determining, on the basis of a value detected by the abnormality detection section, whether or not an abnormality has occurred. When the abnormality determination section determines that an abnormality has occurred, the main control section stops drive of a load drive system, among the load drive systems, in which the abnormality is detected.

A dual purpose mobile machine is disclosed. The mobile machine may have a power source configured to propel the mobile machine and generate electrical power for use offboard the mobile machine. The machine may also have a work tool driven by the power source.

To stop, in an emergency, a revolving superstructure quickly from rotating while preventing damage of a mechanical brake. A revolving superstructure is driven swiveling using a permanent magnetic-type swiveling electric motor; in an emergency, such as a malfunction in a drive or control system for the swiveling electric motor, allowing electric power generated in the electric motor due to inertial rotation to be consumed in an external braking resistor so as to make an electric braking action; and a mechanical brake is activated to stop the rotation and hold the stopped revolving superstructure when a rotation speed of the revolving superstructure becomes equal to or lower than a preset value.

Power systems, heat exchanger systems, electrical regeneration systems and air drag reduction systems for a wheeled vehicle are provided. The systems comprise a vehicle that includes a compressed air system and electrical system. The power and drag reduction system also comprises a plurality of pneumatic motors, one each connected to each wheel, the pneumatic motors using compressed air to drive each wheel. The electrical system supports vehicle braking and regenerates electricity for vehicle batteries. A heat exchanger heats expanding air and is configured to substantially evenly distribute said heated air to the pneumatic motors. Air from a front grill is diverted to impellers that turn electric generators to regenerate power and reduce drag. A drag reducing arrangement blending mirrors with camera into the vehicle body is included as is a plug-in 120-volt trickle charge system and a quick charge (DC) system for battery charging.

An electrical system and method include a DC link, a controlled rectifier connected between the DC link and a power source, an energy storage, a DC to DC converter connected between the DC link and the energy storage, a motor, and a DC to AC converter connected between the DC link and the motor. The converters are configured to transfer power in both directions. The rectifier controls the DC voltage of the DC link when the DC link voltage is in a first voltage range. The DC to DC converter controls the DC voltage of the DC link by charging the energy storage when the DC link voltage is in a second voltage range, which has higher voltage values than the first voltage range, or by discharging the energy storage when the DC link voltage is in a third voltage range, which has lower voltages than the first voltage range.

An auxiliary power supply device for vehicle includes a capacitor unit, a temperature detector, and a charge controller. The capacitor unit includes at least one electric double layer capacitor. The temperature detector detects temperature in vicinity of the capacitor unit. The charge controller controls charging voltage of the capacitor unit based on a detection result of the temperature detector.

Regenerative energy is recovered with high efficiency, and the voltage of a battery or a capacitor is optimally controlled. A construction machine or an industrial vehicle provided with a power supply system which comprises a chargeable / dischargeable capacitor and a feeder circuit for connecting a chargeable / dischargeable battery, the capacitor, and a load capable of power running and regeneration, and which feeds the energy accumulated in the capacitor to the load via an inverter and charges the regenerative energy of the load to the capacitor via the inverter, wherein the load is an electric motor, and the capacitor is connected to the load via a DC / DC converter, the DC / DC converter being equipped with a control means for controlling the energy charged / discharged by the capacitor via the DC / DC converter, and wherein the control means is equipped with a power running / regenerative operation estimating means for estimating an operation pattern including the change point of the power running / regeneration of the motor on the basis of the rotational speed and torque of the motor, the DC current supplied to the inverter, or control lever information, and operation pattern information including the change point of power running / regeneration in an iterative process, which has been previously held, and a capacitor target voltage calculating means for controlling the output command value of the DC / DC converter in such a manner that the target voltage of the capacitor is gradually lowered in the case of the power running and is gradually lowered in the case of the regeneration on the basis of the change point and operation pattern estimated by the power running / regenerative operation estimating means.

To stop, in an emergency, a revolving superstructure quickly from rotating while preventing damage of a mechanical brake. A revolving superstructure is driven swiveling using a permanent magnetic-type swiveling electric motor; in an emergency, such as a malfunction in a drive or control system for the swiveling electric motor, allowing electric power generated in the electric motor due to inertial rotation to be consumed in an external braking resistor so as to make an electric braking action; and a mechanical brake is activated to stop the rotation and hold the stopped revolving superstructure when a rotation speed of the revolving superstructure becomes equal to or lower than a preset value.

An electric vehicle may include a first drive axle to drive a first wheel of the electric vehicle, a first electric motor mounted directly on the first drive axle, a power supply such as a battery to power the first electric motor, and a controller to control the electric motor. The electric vehicle may include a second drive axle to drive a second wheel and a second electric motor mounted on the second drive axle. The electric motor may be only mounted on the first drive axle. The battery may be formed from an array of batteries.

The invention relates to the technical field of engineering machinery, and discloses a feedback current control device and an overhead working truck. The feedback current control device comprises a feedback current capturing module, a first switch module and a control module, wherein the feedback current capturing module is located on a current capturing circuit and is used for capturing a feedback current; the first switch module is used for conducting or switching off the current capturing circuit; and the control module comprises a first receiving unit and a first control unit, and the first receiving unit is used for receiving a first voltage at one end of a driver on a power supply circuit, a second voltage at one end of a battery and the temperature of the battery, the first controlunit is used for executing the following operation according to the difference value of the first voltage and the second voltage and the temperature of the battery, under the condition that the difference value of the first voltage and the second voltage is greater than a preset voltage and the temperature of the battery is less than or equal to a preset temperature, the current capturing circuitis conducted by controlling the first switch module, and the feedback current is captured by the feedback current capturing module. According to the feedback current control device and the overhead working truck, the probability of lithium precipitation of the battery and the risk of thermal runaway of the battery can be greatly reduced.

Provided is a wind powered system which includes a plurality of wind tunnels, a plurality of rotary fans provided in each wind tunnel, a plurality of alternators connected to the plurality of rotary fans to generate electricity, a transformer connected to the plurality of alternators, electric components connected to the transformer, and a battery connected to the transformer and the electric components. The transformer is supplied with the electricity generated by the alternators and outputs electrical energy with a voltage to be supplied to at least one of the electric components and the battery. The plurality of wind tunnels have a plurality of intake inlets which are separated and apart from each other and a single outlet shared by the plurality of wind tunnels.

A hybrid construction machine includes: a motor generator system connected to an internal combustion engine and performing a motor generator operation; an electric power accumulation system connected to the motor generator system; a load drive system connected to the electric power accumulation system and being driven electrically; an abnormality detection part equipped to the motor generator system, the electric power accumulation system and the load drive system; and a main control part determining whether an abnormality has occurred based on a detection value of the abnormality detection part. When the abnormality determination part determines that an abnormality has occurred, the main control part stops a drive of a drive system in which the abnormality is detected in the load drive system.