186 results about "Load shifting" patented technology

Power generation systems and methods are provided with features directed to various innovations including ones relating to the conversion of concentrated solar and biomass energy to electricity, load-shifting of electrical power supply systems, gas turbine devices and cycles, and power plant control systems.

A material handling system for use in storing and moving goods within multi-level storage warehouses, ocean going vessels and the like wherein storage areas are provided on at least one of the levels and wherein goods are automatically transferred to and from the storage areas and between the various levels by self-propelled load transfer vehicles. The load transfer vehicles move across the surface of the various levels and are also movable under their own power within open vertical trunks between the levels to thereby move goods to any desired area within the system, warehouse or vessel.

An exoskeleton, configurable to be coupled to a person, includes an exoskeleton trunk connected to first and second leg supports at respective hip joints, which allow for flexion and extension about respective hip axes. A counterweight device including an auxiliary mass is connected to the exoskeleton trunk through an actuator such that the auxiliary mass extends in a position behind the exoskeleton trunk. A front load is supported by the exoskeleton through a load bearing device including a load shifting device for selectively operating powered reel mechanisms to raise or lower the front load with respect to the exoskeleton trunk. The auxiliary mass can be selectively shifted with respect to the exoskeleton trunk to balance the moment created about the hip axes by the auxiliary mass and the moment created by a downward force of the load on the load bearing device.

The invention is based on a toothed gear transmission in which an input shaft is connected to an output shaft by a first and a second partial transmission, which are disposed parallel to each other in the power flow and which both have a frictionally engaged load shifting clutch and an intermediate shaft, in which each of the intermediate shafts can be effectively connected to the input shaft through the load shifting clutch, and with at least one first transmission constant. It is proposed that for starting, the first load shifting clutch can be placed in effective connection with the output shaft through a transmission constant and the second load shifting clutch can be placed in effective connection with the output shaft through a transmission constant, each at a gear ratio of the lowest gear speed.

The invention discloses a user selection switching method based on a moving load balancing mechanism, mainly solving the problems of interrupted communication or Ping-Pong switching caused by rapidly descensive signal quality easily appearing in the prior method under the circumstance that a user moves at high speed. The user selection switching method has the specific process that a source base station detects the load condition of a cell and decides whether the load balancing mechanism is started or not; the source base station and an adjacent base station exchange load information by an X2 interface and determine an objective cell to which the load is transferred according to the obtained load information of the cell and an adjacent cell; the source base station and an objective base station consult to update respective switching parameter; the source base station makes the reselection on users satisfying switching toggle conditions after the switching parameters are altered so as to determine non real-time service users moving in the manner of deviating from the direction of the base station as final users to be switched; and the users to be switched are switched to the objective cell so as to realize the intra-cell load balancing. The invention greatly increases the probability of normal conversation after the switching is finished, ensures the continuity of user service and improves the user service quality and the system performance and is used for the moving load balancing mechanism of the next-generation mobile communication system.

A soft-load power distribution system includes a transfer switch having a first input to a utility power source with a utility alternating current (AC) voltage, a second input to a generator power source with a generator AC voltage, and an output to a load. A first switch is electrically connected between the first input and the output and a second switch is electrically connected between the second input and the output. The transfer switch has a third input, such as a go to emergency input, controlling the first and second switches. A bypass switch is electrically connected between the second input and the output. First and second sensors, such as potential transformers, sense the utility and generator AC voltages, respectively. A controller closes the bypass switch when the utility AC voltage is within a predetermined range of the generator AC voltage, and includes an output controlling the third input.

A system and method for shifting power load on a power distribution network with multiple power loads, each of which draws power from the power distribution network. The system includes a controller communicatively coupled to an energy storage system and power load on the power distribution network. The controller is configured to receive a load-shifting signal, determine a load-shifting procedure, and switch one or more of the communicatively coupled power loads from drawing power from the power distribution network to drawing power from the energy storage system according to a load-shifting algorithm.

The invention discloses a method for optimizing demand-side time-of-use power price based on photovoltaic grid-connected uncertainty. The method comprises the following steps: obtaining the daily load data after distributed energy is connected, and determining load peak-valley periods according to a fuzzy membership function; determining the objective function and the constraint condition of the optimization method of the demand-side peak-valley time-of-use power price in an operation cycle, and creating a peak-valley time-of-use power price optimizing model; by using a chance constraint theory, converting power balance constraint into deterministic equality constraint; and obtaining optimal peak-valley time-of-use power price by using a particle swarm optimization algorithm. The method provided by the present invention, based on peak shaving and load shifting adjustment of a power distribution network demand side according to the peak-valley time-of-use price optimization model, takes account of the connection of distributed power. At the same time, the optimization method adopts the chance constraint theory to solve the problem of prediction uncertainty of distributed power grid-connected power, reduces the decision risk caused by uncertainty and improves the pricing rationality of peak-valley time-of-use price.

A distributed and collaborative load balancing method is disclosed that uses a utility's existing transmission and distribution system to charge an Electric Vehicle (EV) using load shifting over time and minimizes the overall cost of energy usage to charge EVs. The collaborative load balancing ensures grid reliability.

An automated multi-group standard transmission, for a utility vehicle, and a process for changing gears in the multi-group transmission. The multi-group transmission includes at least two multi-speed transmission groups arranged one after the other, such that a multitude of gears can be shifted. A transmission input shaft that can be connected to an engine, via a startup element, is associated with a first transmission group and a second transmission main shaft is associated with a second transmission group. Load shifting mechanisms produce a temporary direct connection between the transmission input shaft and the transmission main shaft such that an intermediate gear can be shifted during a gear change from an original gear into a target gear. The load shifting mechanism enables gear changes that are virtually free of interruptions in load transfer during a gear change from a lower to a higher gear, thus increasing a high operational comfort.

A simple, adjustable lift system to load a cot bearing a patient into and out of an ambulance and a method of transferring a load on a transport into a vehicle is provided. More specifically, the lift system provides a pair of rails that may be adjusted to accommodate any cot currently in use by an ambulance. The rail system is extendable and is operated by a linear actuator to couple to a cot or other transport and lift the cot or other transport to a height from which the cot may be laterally inserted into the ambulance without undue strain on the EMT, firefighter, or other user.

A vehicle comprising a frame assembly supported for movement by a centrally located driving track assembly and a pair of flanking driving and steering wheels. An engine is assembly carried by the frame assembly which is constructed and arranged to generate and supply power for the vehicle. The driving track assembly includes a track frame structure forming a part of the frame assembly, a series of rollers carried by the track frame structure including a driver roller and an endless track trained about the rollers so as to provide an operative ground engaging flight extending in a straight vehicle driving direction. A power operated track moving structure is operatively connected to the driver roller using power supplied from said engine assembly to move said track in driving relation to the ground. A wheel mounting assembly is provided for each wheel including wheel mounting structure constructed and arranged to mount an associated wheel for rotational movement about a generally transversely horizontally extending rotational axis and a parallel linkage mechanism operatively connected with the frame assembly extending laterally outwardly in connected relation to the wheel mounting structure constructed and arranged to enable the wheel mounting structure to be vertically moved in such a way as to effect a vertical translational movement of the rotational axis. A power operated wheel driving structure is operatively connected with each wheel and uses power supplied by the engine assembly to rotate an associated wheel about the rotational axis thereof. A power operated retractable and extendible unit is operatively connected between the track frame structure and each wheel which is constructed and arranged to effect a relative vertical movement of an associated wheel with respect to the track frame structure between retracted and extended positions.

A system for shifting energy demand from on-peak time windows to off-peak time windows by using hot water heater load shifting, while providing the end user with the level of service (i.e., availability of hot water) according to the user's customary use described by service quality criteria. The shift is accomplished by a controller located at the end user establishment and in communication with a central control server. The controller monitors local water heater upper and/or lower temperature and controls upper and/or lower water heater heating elements in accordance with a demand shift process commanded by the central control server. The controller may determine usage and remaining capacity for reporting back to the central control server. A volumetric capacity and usage determination is disclosed. The control server may select water heaters according to use patterns and/or measured capacity. Further embodiments may regulate load dependent properties of the power including voltage, phase and/or frequency.

The invention discloses a distribution network three-phase load unbalance adjusting control system which comprises a monitoring subsystem, an intelligent power distribution terminal and an intelligent phase-change switch. The monitoring subsystem and the intelligent power distribution terminal conduct data transmission through a wireless communication network, and the intelligent power distribution terminal and the intelligent phase-change switch conduct data transmission through the wireless communication network. By means of the distribution network three-phase load unbalance adjusting control system, the current and voltage information of a power distribution transformer in a distribution unit-area, three-phase four-wire branch lines and single-phase load can be acquired in real time, the unbalancedness of the distribution network three-phase current is obtained through calculation, on-line phase modulation is conducted according to the unbalanced load, and partial load of a phase of a large current is transferred to a phase of a small current, so that the purpose that the distribution network three-phase load unbalance is adjusted is achieved, the line loss is effectively lowered, and power supply quality is improved.