1741results about "Modifications for power electronics" patented technology

The invention discloses a heat dissipation control method and system for stable operation of a photovoltaic inverter, and relates to the technical field of photovoltaic inverter control, and the method comprises the steps: collecting the multi-source data of heat dissipation equipment and elements in the use of the photovoltaic inverter; constructing a feature relation model and an LSTM neural network prediction model based on data acquisition; and through the constructed feature relation model and the LSTM neural network prediction model, analysis is carried out to compare different levels of heat dissipation power with the inverter efficiency improvement degree under different environment temperatures and power levels, a predicted temperature is formed, risk levels are divided, and the optimal heat dissipation level is determined. According to the method, the predicted temperature is graded by utilizing synchronous acquisition of multi-source data and constructing the feature relation model and the LSTM neural network prediction model, and the multi-mode heat dissipation strategy is formulated, so that the heat dissipation strategy is adaptively adjusted according to the state of the photovoltaic inverter to perform adaptive heat dissipation, and the heat dissipation efficiency is improved. And the heat dissipation effect of the photovoltaic inverter is further improved.

The invention discloses a heat dissipation optimization method and system for a power device based on heat flow path reconstruction, and aims to improve the heat dissipation efficiency of the power device in the working process and reduce the adverse effect of thermal stress on the performance and service life of the device. The method comprises the following steps: firstly, acquiring real-time temperature field distribution data of a target power module during the working period of a power device, and determining an initial heat flow path of the module based on the data; performing heat sensitivity analysis on each component in the target power module; identifying a heat flow shielding area according to the heat sensitive data, and reconstructing the initial heat flow path on this basis to generate an optimized heat flow path; and finally, an efficient heat dissipation channel is constructed according to the optimized heat flow path, so that effective heat dissipation optimization of the power device is realized. The method can dynamically identify the thermal bottleneck and actively optimize the heat dissipation path, is suitable for thermal management design of high-power-density electronic equipment, and has high engineering practical value.

The invention relates to the technical field of adaptive control, in particular to an adaptive control method and system for a power conversion system driven by a multi-mode neural network. The method comprises the following steps: extracting a high-order transient feature vector of a load path and a high-order transient feature vector of a voltage path based on a dual-path nonlinear coupling model, and jointly inputting the high-order transient feature vector and the high-order transient feature vector into a multi-modal neural network in combination with an aging index of a power supply for feature fusion to generate an initial switching frequency demand currently required by the power supply; evaluating the heat dissipation capability, inputting the heat dissipation capability into a preset heat dissipation capability three-state model to determine a heat dissipation state, performing temperature compensation and amplitude limiting processing on the initial switching frequency demand, and outputting the corrected switching frequency demand; according to the method and system, the frequency range can be dynamically adjusted according to the real-time heat dissipation capacity, overheating is avoided when heat dissipation is insufficient, efficient operation is kept when heat dissipation is sufficient, the magnetic saturation risk can be restrained in an emergency state, and frequency out-of-control is avoided.

The invention relates to the technical field of energy storage, and provides an energy storage converter which is at least beneficial to improving the heat dissipation efficiency of the energy storage converter. The energy storage converter comprises a box body, a partition plate, a radiator and a fan assembly, and the first partition plate divides a high-voltage area of the box body into an upper-layer high-voltage area and a lower-layer high-voltage area which are arranged up and down; the second partition plate and the third partition plate divide the low-voltage area of the box body into an upper-layer low-voltage area, a middle-layer low-voltage area and a lower-layer low-voltage area which are sequentially arranged from top to bottom; the radiator is located between the lower-layer low-voltage area and the lower-layer high-voltage The fan assembly is located in the lower-layer high-voltage area. Cooling air passes through the radiator from the air inlet to the lower-layer low-pressure area through the fan assembly and then is exhausted from the air outlet, so that a first air flow channel is formed; a plurality of ventilation holes are formed in the side, close to the radiator, of the first partition plate, and cooling air flows to the middle-layer low-pressure area from the air inlet through the fan assembly and the ventilation holes to form a second air flow channel; the air flow rate of the first air flow channel is larger than that of the second air flow channel.

The embodiments of the present disclosure involve the technical field of unmanned aerial vehicles, and disclose an unmanned aerial vehicle base station and an unmanned aerial vehicle system. The unmanned aerial vehicle base station includes a bracket, a tarmac, a charging component, and a temperature adjusting component. The bracket is provided with an accommodating cavity, the tarmac separates the accommodating cavity into an upper compartment chamber and a lower compartment chamber, the temperature adjusting component includes a semiconductor module, a first ventilation assembly, a second ventilation assembly, and a third ventilation assembly, and the semiconductor module is partially provided on the first ventilation assembly and partially provided on the second ventilation assembly.

The invention discloses a fan cooling system, a control method and an inverter. The fan cooling system comprises a fan assembly, a controller, a power source, a radiator, a shell, a temperature monitoring module and a cover body. The rotating direction of the fan is changed in a specific mode, forward rotation and reverse rotation of the fan are achieved, accordingly, the airflow direction is changed, dust and sundries on the fan and the radiator can be automatically cleaned, the normal working time of a heat dissipation system is prolonged, the manual maintenance cost is reduced, and the product reliability is improved.

The invention provides a distributed AC / DC uninterruptible power supply system, which comprises a PLC main control module and a power supply monitoring controller, the AC-DC rectifier module provides a main power supply for the system; the alternating-current and direct-current inverter is used for current conversion and providing an uninterrupted alternating-current power supply; the static switch performs power supply switching between the battery pack and the commercial power; the direct-current starting module activates a direct-current starting function and realizes alternating-current and direct-current uninterruptible power supply; the four-port isolation module realizes current single-phase flow of the battery pack and the intelligent charger; the battery management module is used for uninterruptedly supplying power; the intelligent heat dissipation module is used for automatically dissipating heat in a high-power operation state; and the human-computer interface and the configuration software are used for displaying the operation data and the operation state in real time and carrying out remote management. The battery pack is in an off-line mode; a high-speed switch is adopted for switching, a complete battery management system is adopted, the service life of a battery pack is prolonged, reliable alternating-current and direct-current uninterruptible power supply is achieved, faults are reduced, and intelligent power supply management is achieved.

The invention discloses an intelligent heat dissipation control method and system of a photovoltaic inverter, and relates to the technical field of heat dissipation control of photovoltaic inverters, and the method comprises the following steps: collecting the temperature of parts in the photovoltaic inverter and the temperature of the environment in the photovoltaic inverter through a temperature sensor, collecting an internal thermal imaging image, and carrying out the first screening processing; establishing a thermal imaging temperature correction model; performing temperature correction processing on the thermal imaging image in the photovoltaic inverter to obtain corrected thermal imaging temperature data; dynamically controlling a cooling fan of the photovoltaic inverter; the method is used for solving the problems that when heat dissipation control is carried out by measuring the internal temperature of the photovoltaic inverter in an existing photovoltaic inverter heat dissipation control technology, error correction cannot be carried out on a thermal imaging image through the thermal imaging image and a temperature sensor, accurate internal overall temperature information of the photovoltaic inverter cannot be obtained, and then heat dissipation control cannot be carried out.

The invention provides a cooperative distribution method, system and device for vehicle-mounted double-loop liquid cooling refrigerating capacity and a medium, and relates to the technical field of electric vehicle liquid cooling. Determining the confidence value of the refrigerating capacity in the battery cell cooling loop according to the thermal power net increment in the electric vehicle and the temperature distribution gradient in the battery cell; when the temperature of the power device in the power conversion module is larger than a preset safety threshold value, balance adjustment is conducted on the real-time refrigerating capacity of the power conversion module, and the balance characteristic of the refrigerating capacity in a cooling loop of the power conversion module is obtained; and the liquid cooling refrigerating capacity in the double cooling loops is cooperatively redistributed according to the balance characteristic of the refrigerating capacity in the cooling loops of the power conversion module and the confidence value of the refrigerating capacity in the battery cell cooling loops. Based on the scheme, balanced distribution of the refrigerating capacity between the battery cell cooling loop and the power conversion module cooling loop in the electric automobile can be achieved.

The present application relates to the field of heat dissipation units, and in particular to a power converter and energy storage system with an air-liquid composite heat dissipation unit. The power converter includes a housing, a power converter and an air-liquid composite heat dissipation unit. Among them, the power conversion circuit includes a circuit board and a power tube, the circuit board and the upper cover plate of the housing are stacked and arranged, and there is a gap for air circulation between the top of the circuit board and the upper cover plate of the housing, and the power tube is located between the bottom of the circuit board and the lower cover plate of the housing. The air-liquid composite heat dissipation unit includes a fan and a cold plate, the cold plate is fitted with the side of the power tube, the fan is arranged between the bottom of the circuit board and the lower cover plate of the housing, and there is a gap for air circulation between the fan and the side plate of the housing. The power converter with an air-liquid composite heat dissipation unit disclosed in the present application dissipates heat for power tubes with high heat dissipation requirements through a cold plate, and dissipates heat for air in the equipment through a fan, which helps to improve heat dissipation efficiency and reduce heat dissipation costs.

A power conversion apparatus is disclosed. The power conversion apparatus according to one aspect of the present disclosure may include: a housing including an upper part, a lower part disposed in parallel with the upper part, a first side part connecting the upper part with the lower part, and a second side part disposed in parallel with the first side part; a plurality of transistors disposed adjacent to the first side part inside the housing; a heat sink disposed on one side of the plurality of transistors and providing a passage through which air introduced from the outside moves; and a plurality of capacitors disposed in front of the heat sink, wherein the plurality of capacitors may be disposed to be spaced apart from each other so that air introduced from the outside of the housing moves to the heat sink.

The invention provides a heat dissipation system and energy storage equipment, and belongs to the technical field of heat dissipation. The heat dissipation system comprises a first air duct structure and a second air duct structure, wherein the first air duct structure comprises first air duct paper with a first air cavity, a first air inlet and a first air outlet; the first air cavity is used for accommodating part of a first heating element; the second air duct structure comprises second air duct paper with a second air cavity, a second air inlet and a second air outlet, and the first air duct paper and the second air duct paper are arranged side by side; the second air cavity is used for containing a second heating piece, and the heating value of the second heating piece is smaller than that of the first heating piece. The air inlet fan is arranged at the first air inlet; the reversing fan is arranged at the downstream of the airflow direction of the first air cavity and the upstream of the airflow direction of the second air cavity; and the air outlet fan is arranged at the second air inlet, and the air outlet fan is used for introducing the air flow into the second air cavity and blowing the air flow out through the second air outlet. According to the invention, the uniformity of heat dissipation can be improved, and the aesthetic property of a corresponding product can be improved.

A multi-level modular datacenter for data processing equipment comprising a lower containment unit configured to house at least one uninterruptible power supply unit, a power distribution cabinet system, and one upper porthole disposed on a roof surface of the lower containment unit; an upper containment unit aligned and vertically disposed directly above the lower containment unit, the upper containment unit configured to house a battery assembly, a transformer, and a one lower porthole disposed on a floor surface of the upper containment unit; an electrical distribution infrastructure comprising electrically-communicative cabling to service the lower and upper containment units and the components disposed therein; and at least one electric conduit component, disposed between the lower and upper containment units configured to be aligned with the upper portholes and the lower portholes to accommodate routing of the electrically-communicative cabling and piping between the lower and upper containment units.

The invention provides an energy storage converter and an energy storage device, and belongs to the technical field of energy storage. The converter adopts a hybrid multi-level topological structure and is formed by connecting a three-level neutral point clamping circuit and a modular multi-level sub-module in parallel, and further comprises a hierarchical coordination control strategy, an upper decision-making layer calculates the priority weight of a charging and discharging mode, and a lower execution layer adopts model prediction control to generate a switch sequence. The heat dissipation system is accurately regulated and controlled based on an IGBT junction temperature prediction model, and cooperates with a battery management system (BMS) for protection, so that rapid data interaction and rapid emergency response are realized. The energy storage device comprises the converter and a battery pack, the battery pack is divided into at least two independent clusters, and the SOC of the standby battery cluster is maintained within the range of + / -5% of the main battery cluster. Through an innovative topological structure, an intelligent control strategy and an efficient heat dissipation system, the problems of wide voltage input adaptation, dynamic performance optimization, heat dissipation management and the like are solved, the efficiency and reliability of an energy storage system are improved, and the service life of the energy storage system is prolonged.

First and second bases are arranged to face each other. An inverter is mounted on either of the first and second bases. A converter is mounted on the first base. A chopper is mounted on the second base. At least some of fins thermally connected to the converter via the first base are thermally connected to the chopper via the second base.

The invention relates to the technical field of motor control, and particularly discloses a motor controller, an electric drive assembly and a vehicle. The motor controller comprises a controller shell and an inverter brick assembly; the inverter brick assembly comprises a shell, a water cooling plate, a filtering assembly and a capacitor assembly, the shell is installed in the controller shell and comprises a first shell part and a second shell part, the second shell part is connected with the first shell part in the first direction, the first shell part is provided with a first containing cavity and a second containing cavity, and the second shell part is provided with a third containing cavity. Specifically, the first containing cavities and the third containing cavities are arranged at intervals in the first direction, and the first containing cavities and the second containing cavities are arranged at intervals in the second direction. The water cooling plate is arranged in the first accommodating cavity, one part of the filtering assembly and the capacitor assembly are integrally encapsulated in the second accommodating cavity, and the other part of the filtering assembly is independently encapsulated in the third accommodating cavity. The motor controller is small in size, and the production difficulty and cost can be reduced.

The invention relates to the technical field of frequency converter heat dissipation, and discloses a generator set frequency converter heat dissipation structure which comprises a cabinet body, a sealing seat arranged at the top of the cabinet body, a detachable sealing cover arranged at the top of the sealing seat, a first convection window arranged at the top of the inner side wall of the cabinet body, and a second convection window arranged at the bottom of the inner side wall of the cabinet body. A detachable water-cooling heat exchanger or an air-cooling heat exchanger is arranged on the outer side wall of the cabinet body, a first convection cavity and a second convection cavity are formed in the positions, facing the outer side wall of the cabinet body, of the water-cooling heat exchanger and the air-cooling heat exchanger respectively, and the first convection window and the second convection window are communicated through the first convection cavity and the second convection cavity. Compared with the prior art, the device has the advantages that the internal heat transfer medium does not need extra power, the heat dissipation efficiency is high, contact with cooling water can be avoided, the air tightness is good, invasion of salt mist or dust is reduced, fluorinated liquid is allowed to serve as the internal heat transfer medium, and the phase change latent heat of the fluorinated liquid can be used for coping with high-temperature transient loads.

Disclosed is a power conversion apparatus. The power conversion apparatus according to one aspect of the present disclosure may include: a housing comprising an upper part, a lower part disposed in parallel with the upper part, a first side part connecting the upper part and the lower part, and a second side part disposed in parallel with the first side part; a transistor provided below the upper part inside the housing; a heat sink provided below the transistor and providing a passage through which air introduced from the outside moves; a first air blocking unit provided on a side surface of the heat sink and disposed in parallel with the first side part; a plurality of capacitors disposed between the first air blocking unit and the second side part; and a transformer disposed to be spaced apart from the heat sink, wherein the upper part may be provided with a discharge part formed above the transformer such that air that has passed through the passage is discharged to the outside of the housing.

A power arrangement and cooling system for electronic devices includes a processing unit electrically interconnected and disposed to a first side of a printed circuit board and a power converter electrically interconnected and disposed on a second side of the printed circuit board. The power converter includes a thermally conductive material layer that transfers heat generated by the power converter during operation away from the power converter toward a heatsink that is disposed adjacent the second side of the printed circuit board. Heat generated by the processing unit is absorbed by a heatsink disposed adjacent the first side of the printed circuit board. Power for the processing unit is provided, by the power converter, through a thickness of the printed circuit board.

A power supply switching system includes a switch controlling apparatus, at least two switch apparatuses, alternating current (AC) powers, and a power shelf. The power shelf includes at least two AC inputting ends. Each of the at least two switch apparatuses is electrically connected between one of the AC inputting ends and the AC powers. A number of the AC powers is less than a number of the at least two AC inputting ends. The switch controlling apparatus is electrically connected with each of the at least two switch apparatuses, and controls the at least two switch apparatuses to turn on or turn off. The power supply switching system saves a number of the AC powers while executing an ATS test, thus an efficiency of the power shelf is improved. A switch apparatus is also provided.

A current sensor includes busbars through which a current to be measured flows, magnetic detectors capable of detecting a magnetic field generated when the current to be measured flows through the busbars, a storage space storing the magnetic detectors, and a housing with which part of the busbars is integrated. Ends of the busbars are connected to an external first unit including a cooling device, and other ends of the busbars are connected to an external second unit whose temperature becomes higher than that of the first unit when the current to be measured flows. In the current sensor, which is capable of measuring a current value of the current to be measured from a result of the detection performed by the magnetic detectors, the housing has first vents penetrating from the inside of the storage space to the outside on a side facing the first unit.

The present invention relates to a ceramic substrate unit and a method for manufacturing same, the ceramic substrate unit comprising: a ceramic substrate comprising a ceramic base material and metal layers provided at the upper and lower surfaces of the ceramic base material; an upper electrode bonded to the upper metal layer of the ceramic substrate, formed to be mounted with a semiconductor chip, and having a first stepped protrusion formed at the outer circumferential surface thereof; and a heat sink bonded to the lower metal layer of the ceramic substrate and having a second stepped protrusion formed at the outer circumferential surface thereof. Accordingly, the present invention can relieve thermal stress.

The invention discloses a wireless charging device with temperature control, which comprises a surface shell, a bottom shell, a temperature adjusting module, a wireless charging module and a magnet assembly, and is characterized in that the surface shell is mounted on the bottom shell, a cavity is formed between the surface shell and the bottom shell, and the temperature adjusting module and the wireless charging module are mounted in the cavity; the temperature adjusting module is electrically connected with the wireless charging module. When the charging device main body is used, a mobile phone is placed on the surface shell, the magnetic attraction area surface can attract the mobile phone, the wireless charging module wirelessly charges the mobile phone, then the wireless charging module emits heat, and after the temperature adjusting module is started, heat in the cavity is discharged outwards. And meanwhile, external air enters the cavity through the surface shell, so that the temperature in the charging device main body is lower than the temperature of the mobile phone, heat generated by working in the charging device main body is prevented from being conducted to electronic equipment such as the mobile phone, the refrigeration effect is achieved, and charging use is facilitated.

A five-in-one wireless charger is provided, including a base. The base is provided with a storage groove, the storage groove is provided with a first charging module, a second charging module is arranged on a back of the first charging module, and the second charging module is configured to extend out of the storage groove when the back of the first charging module is abutted against a bottom surface of the storage groove. The base is provided with a third charging module and a charging end of the third charging module is configured to fit with a surface of the base to form a connecting seat. The base is provided with a fourth charging module and a charging end of the fourth charging module is configured to cooperate with the surface of the base to form a concavely charging groove. The base is internally provided with a connecting component.

The present disclosure relates to a water-cooled integrated charger and discharger, which provides a charger and discharger comprising: a charging and discharging jig configured to charge and discharge a battery; a water-cooled power supply part configured to supply a power source to the charging and discharging jig and configured to be cooled with water; and a chiller connected to the water-cooled power supply part through a water-supply pipe and a drainpipe, and configured to release heat energy generated from the water-cooled power supply part to an exterior environment.

An energy storage cabinet and a cabinet-type energy storage device are disclosed. The energy storage cabinet includes a cabinet body, a baffle and an energy converter. A partition is provided in the cabinet body. An internal space of the cabinet body includes a battery chamber and a converter chamber separated by the partition. Side plates of the cabinet body has an air inlet and an air outlet communicated with the converter chamber. The baffle is located in the converter chamber and separates the converter chamber into a cold air cavity and a hot air cavity. The energy storage converter is located in the converter chamber and has a heat-dissipation air duct. The heat-dissipation air duct includes an air inlet port located at an air inlet end of the energy storage converter and an air outlet port located at an air outlet end of the energy storage converter.

The invention relates to the technical field of energy storage systems, and provides an energy storage converter of an energy storage system, the energy storage system and electric equipment. The hyperbaric cabin is located at the position, close to the front panel, of the energy storage converter box; the low-pressure cabin is located at the position, close to the back plate, of the energy storage converter box, the low-pressure cabin comprises a low-pressure cabin upper-layer space and a low-pressure cabin lower-layer space, the upper-layer space comprises a plurality of functional plates, and the lower-layer space comprises a radiator, a plurality of inductors and a capacitor plate. The capacitor plate sinks into the lower-layer space of the low-pressure cabin, so that the layout of the energy storage converter of the energy storage system is more reasonable, and the separation of the high-pressure cabin and the low-pressure cabin is ensured.

The embodiment of the application provides a kind of power conversion equipment, it is related to power electronics field.The power conversion equipment includes shell, circuit board, radiator and first heat exchanger, power cavity is formed in shell, heat dissipation cavity is formed outside shell, shell includes the partition between power cavity and heat dissipation cavity, opening is arranged on the partition, circuit board is arranged in power cavity and the side of opening has first power device;Radiator is arranged in heat dissipation cavity and includes first substrate and first heat dissipation part, first substrate is arranged at opening and is in contact with first power device, first substrate is provided with first gas-liquid passage, first heat dissipation part is provided with second gas-liquid passage communicated with first gas-liquid passage, and cooling working medium for gas-liquid conversion is arranged in first gas-liquid passage;First heat exchanger is located in power cavity or heat dissipation cavity.Through the above technical scheme, the device that can be targeted to heat seriously in power conversion equipment is cooled, so that power conversion equipment is stably operated.

An inverter includes a housing and a heat dissipation apparatus. The housing may include a first cavity and a second cavity, and a power semiconductor device is disposed in the first cavity. The second cavity has a first air inlet and a first air outlet, and a magnetic component is disposed in the second cavity. The heat dissipation apparatus includes a radiator and a first fan. The radiator includes an evaporator and a condenser that are connected to each other. The evaporator is disposed in the second cavity. The power semiconductor device is in thermally conductive contact with the evaporator, to dissipate heat for the power semiconductor device. The first fan is disposed in the second cavity, an air inlet side of the first fan faces the first air inlet, and an air outlet side of the first fan faces the first air outlet.

The invention discloses a precise temperature control water cooling system based on an SVG technology, and relates to the technical field of water cooling systems, and the system comprises an SVG control core module which is used for generating and dynamically adjusting a water cooling system control instruction according to the operation state and heat dissipation demands of an SVG reactive power compensation device; and the multi-dimensional temperature monitoring network is composed of various temperature sensors distributed in the water cooling pipeline, the SVG device heat dissipation terminal and the cooling liquid storage cavity, and is used for collecting temperature data and generating temperature field information. A heat dissipation control logic of an SVG reactive power compensation device is converted into a control instruction, a temperature control target is converted into a control instruction parameter, a corresponding relation between the parameter and a temperature adjustment amplitude is established, and the control instruction parameter is adjusted by using a particle swarm optimization algorithm, so that the control instruction can be dynamically optimized according to an actual operation state of the SVG device; compared with a traditional fixed parameter control mode, the response speed and accuracy of temperature control are remarkably improved.