190 results about "Regenerative energy" patented technology

The invention discloses a variable frequency driving device energy recovery control system based on direct power supply of a high-voltage power grid, and relates to the technical field of electrical transmission and energy recovery control. Updating the power grid impedance model in real time by using a complex impedance calculation method; load operation state parameters are dynamically adjusted in combination with motor end output power, rotating speed change and torque calculation; according to the method, regenerative energy is accurately calculated, a feedback path is adjusted according to voltage fluctuation and frequency deviation of a power grid, a feedback current fluctuation ratio and a power factor are monitored, a feedback path conduction proportion is optimized in real time, when the current is unstable or the power factor is abnormal, a suboptimal path is automatically switched, and continuous and stable operation of a system is guaranteed; according to the invention, the energy feedback efficiency and the power grid compatibility of the high-voltage power grid variable-frequency driving device are effectively improved, and the method is suitable for energy feedback application of a high-power motor driving system.

The invention relates to a cooperative braking control method and device based on a road adhesion coefficient and energy recovery. The method comprises the steps that vehicle state parameters of a current control period are obtained, and the vehicle state parameters comprise the vehicle longitudinal speed, the vehicle transverse speed, the vehicle yaw velocity and the angular velocity of each wheel; a preset prediction model is solved according to the vehicle state parameters and the constraint conditions, and the control quantity of each wheel in the next control period is obtained; wherein the prediction model takes closer actual longitudinal speed to expected longitudinal speed, maximization of regenerated energy, stable change of controlled quantity and convergence of slip rate of each wheel as targets, and the constraint conditions comprise a wheel constraint condition, a motor hydraulic system constraint condition, a battery charging power constraint condition and a braking force constraint condition. The wheel constraint condition is related to the road adhesion coefficient corresponding to each wheel. By the adoption of the method, the energy recovery efficiency can be maximized, and the stability and safety of the vehicle are guaranteed.

The invention discloses a domestic high-power IGBT rectification system and method, and relates to the technical field of IGBT rectification, and the method comprises the steps: constructing an active front-end rectification main circuit; a direct current side hybrid harmonic modulation auxiliary circuit is integrated; performing multiple delay signal elimination operation on the sampled signal, filtering out a harmonic interference signal, and locking the frequency and phase of the fundamental voltage of the power grid through a phase-locked loop; establishing a control structure of a voltage outer loop and a current inner loop, generating an instruction amplitude of a grid-side active current and an ideal sinusoidal current reference waveform, and controlling an IGBT in an active front-end rectification main circuit in real time; real-time fast Fourier transform analysis is carried out on the actual input current of the grid side, and residual harmonic components are identified; and feedback management of regenerated energy is realized. The invention provides a fused high-adaptability active front-end IGBT (Insulated Gate Bipolar Translator) rectification method and system which can stably operate under the condition of power grid voltage distortion and realize deep harmonic suppression and efficient energy bidirectional flow.

A variable-frequency drive includes a rectifier, a filter, an inverter, a capacitor bank, and control circuitry. The rectifier converts AC power from a power source to DC power on a DC bus for filtering by the filter. The inverter converts the DC power to three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. The capacitor bank can store regenerative power on the DC bus from the inverter and can supply the stored DC power to the DC bus for conversion to the three-phase AC power to drive the electric motor. The control circuitry pre-charges the capacitor bank from the AC power of the power source. The control circuitry monitors one or more parameters of the variable-frequency drive and detects one or more fault conditions associated with the one or more monitored parameters.

The invention provides an energy management method and device for an elevator energy supply system. The method is executed by a cloud server and a local controller which work cooperatively. A cloud server obtains historical and real-time operation data of an energy supply system, predicts the available output power of a photovoltaic unit and the comprehensive power demand of an elevator load in a first time period in the future, generates an energy scheduling strategy of the first time period through optimization calculation, and issues the energy scheduling strategy to a local controller; the local controller collects the local real-time operation state of the energy supply system, selects the current execution strategy and controls the energy flow path of each unit so as to supply power to the elevator load or recover the regenerated energy of the elevator load. According to the method, the energy-saving economy can be improved, the two free energy sources including photovoltaic power generation and elevator regeneration energy are preferentially utilized to the maximum extent through cloud collaborative scheduling, the energy storage charging and discharging strategy is optimized to make full use of the commercial power peak-valley price difference, and the overall operation electric charge of an elevator system is remarkably reduced.

The invention discloses an urban rail energy consumption scheduling method based on artificial intelligence multi-objective optimization, and the method comprises the steps: effectively solving a problem of scheduling decision limitation caused by a single optimization objective in the prior art through comprehensive real-time data processing, multi-objective collaborative optimization and intelligent algorithm iteration solution; the optimal control of the overall operation energy consumption of the rail transit system is realized; the train operation energy efficiency, the regenerated energy utilization rate and the operation punctuality rate are effectively improved, meanwhile, the peak load of a traction power supply system is reduced, the overall energy utilization efficiency and the operation performance of rail transit are remarkably improved, and the dual purposes of energy conservation, consumption reduction and efficient operation of the system are achieved.

A system and method for regulating an operating temperature of an energy storage system configured to provide power to a vehicle. The system may comprise a TMS and a controller. The controller may be configured to receive route information, vehicle speed and / or payload and determine aggregate power demand and aggregate regeneration energy, and estimated charging / discharging current. The controller may be furthered configured to initiate a ramp-up procedure based on the estimated discharging current associated with the next sequential incoming segment and a preparation time, and / or to initiate a ramp-up procedure based on the estimated charging current associated with the next sequential incoming segment and a preparation time.

A container-handling vehicle for handling storage containers in a three-dimensional grid of an underlying storage system, comprising: at least one lifting device for lifting storage containers from and lowering storage containers to the underlying storage system, said lifting device comprises a lifting frame for gripping a storage container, a winch system for lifting and lowering the lifting frame, a motor to drive the winch system and a driver circuit with a controller controlling the motor; and at least first and second rechargeable power sources for providing power to the motor, wherein the driver circuit further comprises a regenerative energy circuit configured to harvest energy from the motor when the lifting frame is lowered 10 into the storage system and where the driver circuit is configured to direct harvested energy to the rechargeable power sources according to levels of charge in the rechargeable power sources.

The present invention discloses a port electromagnetic crane and a method and application for recycling and utilizing regenerative energy. This solution cleverly monitors the voltage changes of the common DC bus between the variable frequency motor and the frequency converter to determine in real time whether the variable frequency motor is in the electric state or the power generation state. At the same time, this solution also monitors the state of the energy storage unit and uses the energy storage unit to charge and discharge the auxiliary motor to avoid its negative impact on the system circuit. This solution switches the working state of the energy storage unit to different states through the energy manager based on the motor state information and the energy storage state information of the energy storage unit. This solution can be applied to the working control method of the port electromagnetic crane to realize energy recovery and reuse when the crane's lifting motor is working. At the same time, because the regenerative energy generated by the lifting motor is not fed back to the power grid, it will not cause impact on the power grid and will not cause pollution problems such as harmonics and flicker to the power grid.

The invention relates to the technical field of port automation control, and discloses a container yard equipment collaborative scheduling system based on digital twinning, which comprises a global physical sensing and mapping module, a super real-time shadow rehearsal module, a dynamic coupling rigidity analysis module, a micro power collaborative scheduling module and an instruction generation and closed-loop control module. The global physical sensing module constructs and calibrates a digital twinborn model in real time; the super real-time rehearsal module predicts a task time window and an energy state by utilizing dynamics simulation; and the dynamic coupling stiffness analysis module calculates collaborative matching parameters among the devices. According to the method, through a model predictive control framework, the dynamic coupling rigidity is taken as a weight to adjust the microscopic track of the equipment, so that the power demand window of the automatic guided vehicle is aligned with the track-mounted gantry crane regenerative energy feedback window in a time sequence, and through the dynamic inverse model closed-loop control based on the safety envelope, the power demand window of the automatic guided vehicle is optimized. And high-energy-efficiency collaborative operation and equipment safe operation in a physical disturbance environment are realized.

The invention provides a vehicle abrupt slope slow descent control method and system. The method comprises the following steps that whether a vehicle is in a regenerated energy recovery state in a single-pedal mode or not is judged; if yes, whether the abrupt slope slow descent control system is in a triggered state or not is judged, and the road surface gradient is collected; in response to the situation that the abrupt slope slow descent control system is in a trigger state, current residual regenerative braking force and vehicle speed are collected in real time, and the target vehicle speed of abrupt slope slow descent control is determined according to the current residual regenerative braking force, the road surface gradient, the vehicle gravity and the vehicle speed; and controlling the abrupt slope slow descent control system to adjust the braking force of the vehicle according to the target vehicle speed so as to stabilize the vehicle speed at the target vehicle speed, the method better realizes abrupt slope slow descent control in a single pedal mode, reduces speed fluctuation and speed rise during abrupt slope slow descent control, and improves the driving comfort and safety of the vehicle.

The invention relates to the technical field of ventilation, in particular to an air treatment system integrating a direct air trapping module and a heating ventilation air conditioning device and a control method of the air treatment system, the system comprises an HVAC module, the HVAC module comprises a fresh air inlet, a filter, a mixing point, a fan, a temperature and humidity adjusting unit and an air supply outlet which are connected in sequence, and the HVAC module further comprises a return air header pipe and an exhaust outlet; and the DAC module is provided with an air inlet, a purified air outlet, a regenerated energy input interface and a CO2 product output port. According to the system provided by the invention, the DAC module and the HVAC are efficiently coupled through wind path coordination and energy coordination, and the target node in the first to fourth nodes is started and adjusted to adjust the air flow direction for different operation modes, so that the dynamic regulation and control of the air flow path are realized, and the capability of improving the indoor air quality of the HVAC module is enhanced.

The invention discloses a vehicle economy and stability energy optimization method based on an HCU, and relates to the technical field of new energy vehicle control and energy management, and the method comprises the following steps: building a bus time frequency observation system, carrying out the phase fusion of a voltage signal and a current signal, and generating an impedance track and an energy spectrum baseline; coherent decomposition is carried out based on the energy spectrum base line, motor regeneration energy feedback pulse characteristics are extracted, a high-voltage accessory start-stop time sequence is identified, and a resonance coupling frequency band is positioned and superposed to an impedance track. Transient disturbance is identified through fusion of an impedance track and an energy spectrum, an interference source is predicted and positioned in combination with resonance frequency band tracking and a risk cone, virtual impedance, amplitude limiting shaping, peak shifting regulation and control and anti-mirror vibration suppression are sequentially applied, a moving damping belt is constructed, bus energy disturbance is accurately weakened, residual energy is rapidly absorbed, and the reliability of the bus energy disturbance is improved. Therefore, the system stability and the energy scheduling efficiency are enhanced.

The present invention is a system and method for recovering the kinetic energy created by movement of a vehicle frame relative to a vehicle suspension to generate electrical energy that may be utilized on-the-fly or stored in order to provide power to an electric vehicle, wherein an embodiment for a regenerative energy system uses a hydraulic system coupled to the shock absorbers of a vehicle or trailer, wherein the captured kinetic energy is transferred to a plurality of gear assemblies to convert movement of the vehicle or trailer to rotary motion that is then amplified in rotational speed by a gear reduction system to cause rotational movement of a shaft of one or more generators in a single rotational direction to thereby generate electricity that may be utilized directly by electrical motors or stored in batteries or supercapacitors.

The present invention discloses an elevator control system. The elevator is equipped with an energy storage device that stores regenerative energy generated by the elevator drive motor in a regenerative state and provides it to the elevator drive motor in an electric state. The elevator control system includes: a prediction module for predicting the passenger flow pattern of the elevator; an acquisition module for acquiring movable body information, the movable body information including at least the floor location and mass of the movable body, the movable body being a device that can accept control instructions from the elevator control system to enter or leave the elevator car; a judgment module for determining whether the passenger flow pattern will cause the elevator drive motor to be in a regenerative state; and a control module for generating a first control instruction when the judgment module determines that the control module determines that the control module is in a regenerative state. The elevator control system of the present invention can minimize the cost and size of the storage device while minimizing the elevator's power consumption.

The hydraulic excavator includes: a power take-off (PTO); an engine connected to the PTO; a swing hydraulic pump connected to the PTO and driven by the engine; a swing hydraulic motor driven by hydraulic oil discharged from the swing hydraulic pump; a first main oil passage connecting the first outlet of the swing hydraulic pump to the first inlet of the swing hydraulic motor; a second main oil passage connecting the second outlet of the swing hydraulic pump to the second inlet of the swing hydraulic motor; a neutral holding valve disposed in the first and second main oil passages for controlling the flow of hydraulic oil; a regenerative energy absorption device connected to the PTO and absorbing regenerative energy generated by the hydraulic oil supplied from the swing hydraulic motor to the swing hydraulic pump via the outlet throttling opening of the neutral holding valve; and a valve control unit that controls the area of ​​the outlet throttling opening based on the state of the regenerative energy absorption device.

According to one aspect of the present invention, there is provided a power plant controller for a renewable energy power plant including a plurality of renewable energy generators. The renewable energy farm is connected to a power network. The farm controller is configured to execute machine-readable instructions to: receive a signal indicative of a voltage level of a power network to which the farm is connected; receiving a plurality of signals from the plurality of renewable energy generators, the Good signal indicating a voltage level of the respective renewable energy generator; and for each of the plurality of renewable energy generators, determining a respective reactive power setpoint based on: an indicated voltage level of the power network; an indicated voltage level of the renewable energy generator; and a reference voltage level based on the indicated voltage levels of the plurality of renewable energy generators; and scheduling each determined reactive power setpoint to a respective local controller associated with a respective renewable energy generator for controlling the renewable energy generator.

A servo driver system capable of inputting voltage in a wide range is characterized in that the servo driver system comprises an alternating current-direct current conversion circuit, the input end of a DC-DC voltage-boosting and voltage-regulating circuit is connected with the alternating current-direct current conversion circuit, the input end of an energy consumption braking circuit is connected with the output end of the DC-DC voltage-boosting and voltage-regulating circuit, the direct current-alternating current conversion circuit is connected to the output end of the energy consumption braking circuit, and the direct current-direct current conversion circuit is connected to the output end of the energy consumption braking circuit. And at least one servo driver is connected to the output DC-AC conversion circuit. When a servo driving system with wide-range input voltage is used, a user turns on a power supply, so that alternating current is input to the alternating current-direct current conversion circuit, and a stable voltage level is maintained through the DC-DC buck-boost circuit; when the servo motor slows down or stops, the energy consumption braking circuit consumes regenerated energy, the DC-DC voltage-boosting and voltage-regulating circuit regulates the grid voltage of the MOSFET tube through the error feedback circuit and the system to form a negative feedback closed loop, and the electric energy is stored in combination with an energy storage element on the DC-DC voltage-boosting and voltage-regulating circuit so as to keep the stability of the output voltage.

An electrical braking system for an electrified vehicle includes a battery system, an electric motor, an electrical energy management module and a controller. The electric motor is powered by the battery system and transfers drive torque to a driveline for propulsion of the vehicle and that selectively directs regenerative power to the battery system during regenerative braking in a first mode. The electrical energy management module has a first energy recovery system that stores additional energy from the regenerative power harnessed from the electric motor in a second mode and a first energy dissipation system that dissipates additional energy from the regenerative power in a third mode. The controller receives an input from a brake pedal indicative of a braking event of the electrified vehicle and, responsive to the input, determines whether to direct the regenerative power in at least one of the first, second and third modes.

The present invention is a system and method for providing a regenerative energy system and method for capturing kinetic energy from wave motion or the relative motion of train cars on tracks to generate electricity, wherein the system uses a hydraulic mechanism coupled to a wave motion capture system or train track components to convert vertical movement into rotational motion, wherein this rotational motion is amplified by a gear reduction assembly, driving one or more generators to produce electrical power. The generated electricity can be utilized in real time by electrical motors, stored in batteries or supercapacitors, or supplied directly to the power grid, wherein the invention integrates hydraulic conversion, motion amplification, and efficient energy transformation to create a durable, scalable system for renewable energy production, and wherein it is designed to harness repetitive, continuous movements, making it applicable for sustainable energy in coastal and transportation infrastructures.

A variable frequency drive (VFD) includes a rectifier, a filter, an inverter, a capacitor bank, and a control circuit. The rectifier converts AC power from a power supply into DC power on a DC bus, which is then filtered. The inverter converts the DC power into three-phase AC power for output to the electric motor. The capacitor bank has one or more capacitors connected to the DC bus. This capacitor bank can store regenerative energy on the inverter's DC bus and supply the stored DC power to the DC bus for conversion back to three-phase AC power to drive the electric motor. The control circuit pre-charges the capacitor bank using AC power from the power supply. The control circuit monitors one or more parameters of the VFD and detects one or more fault conditions associated with the monitored parameters.

In order to improve the accuracy of ascertaining the restriction of regenerative braking in consideration of the relationship between the travel position of a railway vehicle and the regenerative energy that can be provided to an overhead power line, the present invention provides a railway system comprising an on-board system mounted in the railway vehicle and a ground-side system that can communicate with the on-board system. The on-board system transmits vehicle regenerative data, which is data relating to regeneration by the railway vehicle, to the ground-side system. The ground-side system has a regenerative braking restriction database that is constructed by accumulating, on the basis of the vehicle regenerative data received from the on-board system, at least data on a travel section of the railway vehicle and data on the regenerative braking restriction of the railway vehicle.

The invention relates to the technical field of hybrid power, and discloses a charging and discharging control method and device of a super capacitor, an operation machine and a storage medium. When it is detected that a hybrid power system is in a target working condition, working condition parameters of the hybrid power system are obtained; according to the method, the charge state protection threshold value and the control strategy of the charge and discharge power of the super capacitor are determined, and then the super capacitor is controlled to charge and discharge based on the charge state protection threshold value and the control strategy of the charge and discharge power of the super capacitor, so that the charge state of the super capacitor is dynamically maintained in a high-efficiency interval; the charging and discharging efficiency of the super capacitor is always kept at a relatively high level, so that the recovery rate of regenerated energy and the utilization rate of auxiliary driving energy of the super capacitor are remarkably improved, the extreme charge state of the super capacitor is effectively avoided, the internal loss and the aging rate of the super capacitor are reduced, and the cycle life of the battery is prolonged.

Some embodiments of the teachings herein include a motor driver with an input end connected to a three-phase power grid, an output end connected to a motor, a rectifying circuit, a DC link circuit; and an inverter circuit. The inverter circuit has three DC / AC conversion branch circuits connected in parallel between positive and negative output ends of the DC link circuit and each conversion branch circuits has six switching devices. The rectifying circuit comprises a rectifier bridge, a first half bridge, three switches, and an inductor. When the motor is operating in a braking regeneration mode, regenerated energy generated during braking of the motor is fed back to a power grid.

This invention provides a catalyst regeneration energy recovery heat pump system, belonging to the field of heat pump technology. An external air channel connects to a coke-regeneration system via a heat source regenerator. The coke-regeneration system has a flue gas channel connecting to the outside via a high-temperature heat exchanger and a heat source regenerator. An external gas channel connects to a compressor, a high-temperature heat exchanger, a high-temperature expander, a high-temperature steam generator, and a low-temperature steam generator. A heater connects to the low-temperature steam generator via a booster pump. The heater connects to an evaporator via a throttling valve. The evaporator connects to the low-pressure port of an ejector. The low-temperature steam generator connects to the high-pressure port of an ejector. The ejector connects to the heater via a second compressor. An external liquid medium pipeline connects to the high-pressure port of a second ejector via a second booster pump and a high-temperature steam generator. An external heated medium channel connects to the low-pressure port of the second ejector via the heater. The second ejector connects to the outside. The evaporator also has a low-temperature heat medium channel connecting to the outside, forming a catalyst regeneration energy recovery heat pump system.

The invention provides a catalyst regeneration energy recovery heat pump system, and belongs to the technical field of thermodynamics and heat pumps. An air channel outside is communicated with a charring-regeneration system through a heat source regenerator, the charring-regeneration system is further communicated with the outside through a smoke channel via a heat exchanger and the heat source regenerator, the charring-regeneration system is further communicated with a combustion chamber through a CO-rich smoke channel, and the combustion chamber is further communicated with the outside through a smoke channel via the heat exchanger and the heat source regenerator. The compressor communicates with the high-temperature expansion machine through a circulating working medium channel via the heat exchanger and the combustion chamber, the high-temperature expansion machine communicates with the low-temperature expansion machine through a circulating working medium channel via the heat supplier, and the low-temperature expansion machine communicates with the compressor through a circulating working medium channel via the low-temperature heat exchanger. The heat supply device communicates with the outside through a heated medium channel, the low-temperature heat exchanger communicates with the outside through a low-temperature heat medium channel, the high-temperature expansion machine and the low-temperature expansion machine are connected with the compressor and transmit power, and the catalyst regeneration energy recovery heat pump system is formed.

According to embodiments of the present application, there is provided a material testing apparatus comprising: a guiding mechanism; a sample holding mechanism for holding a sample; a force applying mechanism, the force applying mechanism comprising a first actuator for applying a releasable force to the sample; a crosshead supported on the guiding mechanism and arranged to support at least a portion of one or both of the sample holding mechanism and the force applying mechanism; an energy store arranged to store regenerated energy from at least the first actuator; an energy consumer arranged to at least partially consume energy from the energy store, wherein the energy consumer comprises the first actuator; and a controller configured to control the first actuator to release the force applied to the sample, wherein the first actuator is arranged to output the regenerated energy based on the release of the force.

The invention relates to an intelligent circuit breaker and a regenerated energy recovery system, and the intelligent circuit breaker comprises an adhesion detection module which is connected with a contact of an external control electric appliance, and provides an adhesion test signal for an adhesion detection loop; the insulation detection module is connected with an external insulation loop and provides an insulation test signal for an insulation detection loop; the fast fuse protection module is connected in series in a direct current main loop of the intelligent circuit breaker; the master control module obtains the adhesion sampling signal from the adhesion detection loop, determines an adhesion diagnosis result of the contact according to the adhesion sampling signal, obtains the insulation sampling signal from the insulation detection loop, determines an insulation diagnosis result of the external insulation loop according to the insulation sampling signal, and sends the insulation diagnosis result to the external insulation loop. Monitoring the state of a fuse unit in the fast fuse protection module, and outputting an alarm signal when the fuse unit is monitored to be fused; extreme short circuit fault response, contact adhesion diagnosis of a control electric appliance in the system and insulation state monitoring of the system can be realized.

The invention provides a catalyst regeneration energy recovery heat pump device, and belongs to the technical field of refrigeration and heat pumps. An air channel outside is communicated with the charring-regeneration system through a heat source regenerator, the charring-regeneration system is further provided with a smoke channel which is communicated with the outside through a heat exchanger and the heat source regenerator, and a compressor is provided with a circulating working medium channel which is communicated with an expansion machine through the heat exchanger. The expansion machine is divided into two paths after being communicated with a heat supply device through a circulating working medium channel, the first path is communicated with a heat regenerator through a second expansion machine, the second path is directly communicated with the heat regenerator, then the heat regenerator is communicated with an evaporator through a condensate pipeline and a throttling valve, and the evaporator is communicated with the heat regenerator through a circulating working medium channel; the heat regenerator communicates with the compressor through a cycle working medium channel. The heat supplier communicates with the outside through a heated medium channel, the evaporator communicates with the outside through a low-temperature heat medium channel, the expansion machine and the second expansion machine are connected with the compressor and transmit power, and the catalyst regeneration energy recovery heat pump device is formed.

The invention discloses a train-ground good control method and system for regenerative braking of an urban rail train. A hybrid energy storage framework comprising an energy type ground energy storage system and an energy type railway energy storage system is evaluated. In the planning stage, a multi-objective optimization algorithm is adopted for coordinating and searching for capacity configuration of an optimal vehicle-ground standby system, initial investment is balanced, and energy conservation and high efficiency are achieved. And real-time and good charging time table control: during operation, setting and accessing mutually independent voltage threshold groups with strategic differences for the vehicle-ground energy storage system, and constructing a priority scheduling priority. And online self-adaptive threshold correction: according to the actual energy variation of the energy storage system monitored and counted in real time, dynamically parameters the threshold reference value so as to adapt to the working condition change. Through vehicle-ground coordination, the emergency of a single power grid scheme is overcome, the comprehensive benefit of regenerated energy can be obviously improved, the obtained power grid voltage stability is optimized, and the power grid voltage stability is enhanced.