1301results 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 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 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 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.

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 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.

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 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.

The invention discloses an immersion phase change cooling device and cooling method for a net-forming type energy storage converter. The device comprises a power module phase change cooling unit, a condensation module, a liquid storage tank and a heat exchanger, the power module heating element is soaked in a refrigerant of the power module phase change cooling unit, the refrigerant absorbs heat and is heated to generate phase change vaporization, and a liquid refrigerant is converted into a gas refrigerant to be used for reducing the temperature of the power module heating element. A gaseous refrigerant flows to a condensation module, the condensation module exchanges heat with the gaseous refrigerant, so that the gaseous refrigerant is converted into a liquid refrigerant through phase change, and the liquid refrigerant flows to a heat exchanger and exchanges heat with air in the cabinet to reduce the temperature of elements in the cabinet; and the liquid refrigerant continues to flow into the power module phase change cooling unit to cool the power module, so that the immersion phase change cooling circulation process of the structure network type energy storage converter is realized. According to the invention, through phase-change heat exchange, the heat dissipation problem of sudden increase of heat consumption caused by short-time multi-time overload of the grid-forming type energy storage converter is solved, and the heat dissipation efficiency and reliability are improved.

A wireless charger is configured to charge a mobile device and be connected to an air conditioner. The wireless charger includes a casing, a wireless charging module, and a valve assembly. The casing includes a first accommodation space, a second accommodation space, and an air inlet. The first accommodation space is in fluid communication with the second accommodation space, the first accommodation space is configured to accommodate the mobile device, and the air inlet is in fluid communication with the first accommodation space and the second accommodation space. The wireless charging module is located in the second accommodation space and configured to charge the mobile device. The valve assembly is mounted to the air inlet and configured to be connected to the air conditioner.

The invention discloses a phase change integrated heat dissipation transformation method for improving the short-time overload capacity of ANPC topology. In order to solve the problems of high cost and poor compatibility caused by the fact that the overload capacity of the existing ANPC topology needs to depend on additional static redundancy capacity and additional devices, a phase change material integrated device is selected to be combined with a conventional device according to the loss characteristics of the devices at different positions. By utilizing the isothermal heat absorption characteristic of the phase change material at a specific temperature, the rapid rise of the junction temperature of the high-loss device during overload operation is effectively inhibited, the junction temperature ranges of the high-loss device and the low-loss device tend to be consistent, and the short-time overload operation capability of the system is remarkably improved.

The present application relates to a kind of outdoor energy storage device, including cover, lower shell, panel frame, inverter module, power management module, battery assembly, cover covers lower shell, panel frame is installed in lower shell and with the outer wall of lower shell flush, cover, panel frame and lower shell are enclosed to form the accommodation space for accommodating inverter module, power management module and battery assembly;Battery assembly is installed in the bottom wall of lower shell, power management module is installed in battery assembly, and for adjusting the power supply power of battery assembly, power management module is electrically connected with battery assembly, inverter module is installed in the shell of battery assembly and is stacked with battery assembly, inverter module is connected to power management module, panel frame is electrically connected to inverter module, panel frame is connected to power management module.Communication.Such setting, outdoor energy storage device is smaller, power supply is safe, and outer surface is flat, and it is convenient to carry.

A battery charger and a method of operating a battery charger. The charger may include a housing defining an air inlet and an air outlet; a charging circuit operable to output a charging current to charge a battery couplable to the battery charger; a tubular heat sink; and a fan operable to cause air flow from the air inlet to the air outlet and along the heat sink. The charger may include a first switch operable to electrically connect the charging circuit to a power source when the battery engages the charger; and a second switch operable to electrically connect the charging circuit to a battery terminal after the charger terminal is electrically connected to the battery terminal. The charging current or a fan speed may be adjusted based on at least one of the temperature of the charger or a temperature of the battery.

The present invention relates to an arrangement for cooling (10) a heat pump converter with air, wherein the cooling arrangement (10) comprises at least one metallic heat sink (30) formed with cooling fins (32) that is thermally conductively connected to electronic components (12) of the heat pump converter, an air duct cooling channel (20) in which the heat sink (30) is arranged, an air inlet opening (22) into the air duct cooling channel (20), and an air outlet opening (24) from the air duct cooling channel (20). The air inlet opening (22) is arranged such that outside air can flow in, and the air outlet opening (24) has a connection to a fan interior (40), wherein the fan interior (40) is arranged on the suction side (42s) of a fan (42).

The utility model provides a modularized uninterruptible power supply. The modularized uninterruptible power supply comprises a power cabinet and a module assembly arranged in the power cabinet, the interior of the power cabinet is divided into an upper space and a lower space, the module assembly is arranged in the lower space, the lower space is divided into a power area and a bypass area, and the module assembly comprises a power module and a bypass assembly. According to the modularized uninterruptible power supply provided by the utility model, the interior of the power cabinet is divided into the upper space and the lower space, and the upper outgoing line wiring copper bar is arranged in the upper space, so that the operation that a cable is connected to the upper outgoing line wiring copper bar through the top of the power cabinet by a client can be realized; and the module assembly is arranged in the lower space, and the lower space is divided into the power area and the bypass area, so that the rationality of the modularized uninterruptible power supply can be effectively improved, and the maintainability and reliability of the whole machine are improved.

The invention relates to the technical field of inverter shells, in particular to an inverter shell device with self-locking cooling air flues, which comprises a shell, a plurality of cooling fins are fixed on two sides of the shell at equal intervals, the air flues are mounted on the inner sides of two sides of an opening of the shell, and each air flue comprises a fan assembly fixedly mounted with the shell. The air outlet end of the fan assembly is fixedly communicated with a rectangular pipeline, one end of the rectangular pipeline is sealed and fixed to the inner side of the shell, a plurality of second air outlet holes are formed in the bottom face of the rectangular pipeline, and baffles are rotationally connected into the second air outlet holes. According to the invention, the two air ducts are installed at the opening of the inverter, the bottom surface of the rectangular pipeline of each air duct is provided with the second air outlet hole which is locked or opened through the baffle plate, and each second air outlet hole can separately blow dispersed heat to an area with a fast temperature rise or a high temperature, thereby facilitating the reduction of the local overheating risk, and improving the reliability of the inverter. And the heat dissipation efficiency of the inverter shell can be improved.

Changing electrical power needs for buildings often requires the upgrade of the electrical panel, the addition of extra panels, or both. Herein, a single electrical panel hosts power interface modules that connect to multiple power rails within the panel. The modules, which plug into the panel, convert power between the rails, or make and break connections between the rails, under the command of a system controller. The rails are connected to switchgear to which a variety of external power sources and loads can be connected. The modules are cooled by a heat exchanger and the waste heat may be directed outside or used to heat inside the building or heat domestic water.

According to the energy storage power supply device with the temperature control function, under the conventional working condition, a collecting box introduces cooling media such as rainwater into a circulation column through a drainage pipe, a large-area and high-efficiency heat exchange channel is formed, an electric fan in an energy storage power supply box is matched, air convection and water-cooling heat dissipation are enhanced, stable operation of equipment is guaranteed, and the service life of the equipment is prolonged. In extreme weather such as rainstorm, a bidirectional electric push rod is adopted to drive a diversion ball and a Z-shaped groove structure, heat dissipation holes can be actively blocked, rainwater infiltration can be effectively prevented, self-cleaning of ventilation holes is achieved by means of flushing of rainwater to the diversion ball and a dustproof net, and a channel is kept unblocked; the heat conduction feedback rod can sense the water temperature change and drive the shape memory alloy elastic strip to release the cooling particles to the circulation column, the cooling particles rapidly absorb heat and dissolve, the cooling efficiency is greatly improved, the high-temperature working condition is timely dealt with, and safe and reliable operation of equipment is guaranteed.

An induction cooktop comprises a cooktop surface, induction heating coils beneath it, a power supply with power semiconductors for the induction heating coils, and an external electrical connection. The power supply is located on a power circuit board, and the electrical connection is located on a connection circuit board. At least one cooling device is also provided, comprising at least one fan with a fan inlet for intake and a fan outlet for exhaust air to cool the power supply, a cooling air duct, and at least one heat sink to which the cooling air duct leads. In a vertical direction perpendicular to the cooktop surface and to one of the circuit boards, the fan is positioned lower than the heat sink.The connection circuit board runs below the power circuit board, the connection circuit board has an electrical connection to the outside, and the cooling air duct runs with a bend and deflection of 90° or 180° between the fan outlet and the heat sink.

The present disclosure relates to the technical field of energy storage, and, in particular, to an energy storage converter and an energy storage system. In embodiments of the present disclosure, a first cavity of a housing is configured to include a first region and a second region which are arranged along a first direction, an airflow generation apparatus can generate a first airflow flowing through the first region and a second airflow flowing through the second region, and the first airflow and the second airflow both flow in from a first side of the first cavity and flow out from a second side of the first cavity, so that the first region can be subjected to heat management by using the first airflow, and the second region can be subjected to heat management by using the second airflow. Meanwhile, since an average heat generation of devices arranged in the first region is greater than an average heat generation of devices arranged in the second region, more of the first airflow can flow into and flow out of a first channel defined by a cover by arranging the cover in the first region, so that a heat management effect of the first region can be improved, and then, a heat management effect can be improved on the whole.