147 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.

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 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 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 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.

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.

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.

The invention provides a method for protecting a regenerative resistor and a motor control device, which can protect the regenerative resistor which consumes regenerative energy when a motor decelerates without additional hardware resources or a large calculation load. The regenerative transistor provided in series with the regenerative resistor is kept on during a period in which the main circuit voltage reaches the regenerative threshold voltage, and when the regenerative transistor is kept off when the main circuit voltage is lower than the regenerative threshold voltage, the regenerative transistor is turned off according to the resistance value of the regenerative resistor and the regenerative threshold voltage. A regeneration constant S indicating the energy generated by the regeneration resistor in each control cycle is defined (step 102), the regeneration constant S is accumulated in the control cycle in which the regeneration transistor is on (step 105), the accumulated value P of the regeneration constant is reduced in accordance with the time constant in the control cycle in which the regeneration transistor is off, and the state of the regeneration resistor is evaluated on the basis of the accumulated value P. And detecting an abnormality (steps 107, 108, 111).

To protect a regenerative resistor which consumes regenerative energy during deceleration of a motor without requiring additional hardware resources and without requiring a large operation load.SOLUTION: When a regenerative transistor provided in series with a regenerative resistor is maintained in an on-state in a period in which a main circuit voltage reaches a regenerative threshold voltage and the regenerative transistor is maintained in an off-state when the main circuit voltage is lower than the regenerative threshold voltage, A regeneration constant S representing energy generated in a regenerative resistor per control period is defined (step 102), the regeneration constant S is accumulated in a control period in which a regenerative transistor is turned on (step 105), an accumulated value P of the regeneration constant is reduced according to a time constant in a control period in which the regenerative transistor is turned off, and a state of the regenerative resistor is evaluated based on the accumulated value P to detect an abnormality (step 107,108,111).SELECTED DRAWING: Figure 2

The invention provides a catalyst regeneration energy recovery heat pump system, 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 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 the heating furnace through a CO-rich smoke channel, and the heating furnace is further communicated with the outside through a smoke channel via the heat exchanger and the heat source regenerator. The compressor is provided with a circulating working medium channel which is communicated with the expansion machine through the heat exchanger and the heating furnace, the expansion machine is further provided with the circulating working medium channel which is divided into two paths, the first path is communicated with the heat supplier, and the second path is communicated with a high-pressure steam inlet of the ejector. The ejector communicates with the compressor through a medium-pressure cycle working medium channel. And the heat supplier and a heated medium channel, and the evaporator and a low-temperature heat medium channel are respectively communicated with the outside to form a catalyst regeneration energy recovery heat pump system.

The invention provides a catalyst regeneration energy recovery power device, and belongs to the technical field of thermodynamics and thermodynamic. An external air channel is communicated with a 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 source heat exchanger and the heat source regenerator, and the charring-regeneration system is further provided with a CO-rich smoke channel which is communicated with a combustion chamber through a compressor. The outside is communicated with the combustion chamber through a second compressor and a heat source heat exchanger through an air channel, the combustion chamber is communicated with the expansion machine through a smoke channel, the expansion machine is communicated with the outside through a smoke channel and an evaporator, the condenser is communicated with the evaporator through a condensate pipeline and a booster pump, and then the evaporator is communicated with the steam turbine through a steam channel. The steam turbine communicates with the condenser through a low-pressure steam channel. The condenser further communicates with the outside through a cooling medium channel, the expansion machine is connected with the compressor and the second compressor and transmits power, and the catalyst regeneration energy recycling power device is formed.

A regenerative braking system for an electrified vehicle includes a battery system, an electric motor and a regenerative system resistor. The battery system selectively stores and delivers power. 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 in a first mode to the battery system during regenerative braking. The regenerative system resistor is selectively moveable between a first position during the regenerative braking in the first mode and a second position where regenerative power is directed to the regenerative system resistor and dissipated as heat in a second mode.

The invention provides a catalyst regeneration energy recovery heat pump system, and belongs to the technical field of heat pumps. An external air channel is communicated with the charring-regeneration system through a heat source regenerator, the charring-regeneration system is further provided with a flue gas channel which is communicated with the outside through a heat exchanger and the heat source regenerator, the charring-regeneration system is further provided with a CO-rich flue gas channel which is communicated with a combustion chamber through a compressor, and the external air channel is communicated with a second compressor. The second expansion machine is communicated with a heat regenerator through an air channel and then communicated with a second compressor through a middle port, the second compressor is communicated with a combustion chamber through an air channel and a heat exchanger, and the combustion chamber is communicated with the expansion machine through a gas channel. The expansion machine is divided into two paths after being communicated with a heat supply device through a gas channel, the first path is communicated with a second expansion machine, the second path is communicated with a heat regenerator, and the heat regenerator is communicated with the outside through a gas channel via a third expansion machine; and the heat supplier is communicated with the outside through a heated medium channel to form a catalyst regeneration energy recovery heat pump system.

The application discloses a kind of high-power IGBT rectifying system and method, it is related to the technical field of IGBT rectification, including active front-end rectification main circuit is constructed;Integrated dc side hybrid harmonic modulation auxiliary circuit;Multiple delay signal elimination operation is carried out to the signal obtained by sampling, filter harmonic interference signal, the frequency and phase of grid fundamental voltage are locked by phase-locked loop;Establish the control structure of voltage outer loop and current inner loop, generate the instruction amplitude of net side active current and ideal sine current reference waveform, and real-time control IGBT in active front-end rectification main circuit;Actual input current of net side is analyzed in real time by fast fourier transform, and residual harmonic component is identified;Realize the feedback management of regenerative energy.The application proposes a kind of active front-end IGBT rectification method and system with high adaptability of fusion type, which can operate stably under grid voltage distortion conditions, and realize deep harmonic suppression and high efficient energy bidirectional flow.

Briefly, embodiments, such as estimating energy utilization based at least in part on estimated regenerative energy production to select one or more preferred routes for an electric vehicle out of a network of routes, for example, are described.

The invention provides a dynamic cooperative control method for regenerative energy of a traction power supply system fused with power prediction, and relates to the technical field of traction power supply systems, and the method comprises the steps: obtaining a plurality of train position vectors of a plurality of running trains; executing dual-thread asynchronous matching to obtain a plurality of line environment characteristic parameters and a plurality of multi-source sensor dynamic fusion weights; multiple pieces of train operation state data are collected; constructing a plurality of spatio-temporal joint feature vectors; working condition migration probability prediction is carried out, and a plurality of ultra-short-term net power demands are output; power supply interval topology affiliation prediction is carried out, and a plurality of power supply interval topology codes are positioned; and according to the space-time coupling relationship, executing the dynamic closed-loop cooperative control of the regenerated energy of the far-end traction power supply system. The technical problem that a traction power supply system in the prior art depends on a simple load distribution rule and cannot respond to severe load fluctuation in time, so that power distribution is uneven, and the stability of a power grid is affected is solved.

A variable frequency drive to drive an electric motor for a reciprocating pumping unit includes a rectifier, a filter, an inverter, and a capacitor bank. The rectifier converts AC power to DC power 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 passed from the motor through the inverter and can supply the stored DC power to the DC bus to drive the electric motor. Control circuitry can control the speed of the electric motor provided by the variable frequency drive during strokes of the pumping unit. The control circuitry can pre-charge the capacitor bank from AC power. The control circuitry can detect any fault condition.

Systems and methods to predict and apply regenerative braking using GPS (global positioning system) and IMU (inertial measurement unit) data. Techniques described herein may be utilized to use a vehicle's current GPS position and IMU sensor data to determine charging availability for electric or hybrid vehicles. IMU and / or GPS data is used to determine a next path prediction and detect next route elevation level. If the next route elevation level is above a threshold, value, the vehicle's motor may be automatically swapped for regenerating energy. Accordingly, recharging operations may be performed in a wide change of scenarios, including those where a driver has not engaged the brake pedal.