25 results about "AC module" patented technology

The embodiment of the invention discloses a power control method of a parallel energy storage system and the parallel energy storage system. The method comprises the following steps: an energy storage converter host receives a total battery power scheduling instruction, collects battery side actual power reported by each energy storage converter slave and calculates total actual power; generating a corrected total power instruction based on the scheduling instruction and the total actual power, and distributing the corrected total power instruction to each energy storage converter slave; and each energy storage converter slave generates and executes a power execution instruction of the DC / AC module based on the received power reference instruction and the actual power collected by the energy storage converter slave. The battery side total power is ensured to accurately track the scheduling instruction through the system-level closed-loop control, the efficiency conversion error is eliminated through the single-machine-level closed-loop control, the high-precision control of the battery power is realized, the accurate scheduling of the system total power can still be ensured even under the condition that the single-machine power is limited, and the control precision and reliability of the parallel energy storage system are improved.

The invention relates to the technical field of power supplies, and discloses a bidirectional uninterruptible power supply system with a bus neutral-point balance circuit and a control method, the bidirectional uninterruptible power supply system comprises a static bypass unit, a power conversion unit and a controller, a first end of the static bypass unit is connected to an external power grid, and a second end is used as a power grid output end; the first end of the power conversion unit is connected with the energy storage device, the second end of the power conversion unit is connected with the power grid output end of the static bypass unit to form an alternating-current connecting end connected with a load, the power conversion unit comprises a three-level bidirectional DC / AC module, a direct-current bus and a bus neutral-point balance circuit, and the bus neutral-point balance circuit is coupled with the direct-current bus. The direct-current bus comprises a first capacitor and a second capacitor; the controller is configured to control the operation logic of the bus neutral-point balancing circuit according to the voltage difference between the first capacitor and the second capacitor so as to clamp the neutral-point potential of the DC bus. The architecture topology is simple, and the operation stability and the power supply reliability under multiple working conditions are improved.

The application provides a power supply control circuit, a transformer area voltage control system and method, comprising: an AC-DC module, an input end of which is connected with an AC power supply on a power supply side, and an output end of which is connected with a DC bus; a DC-AC module, an input end of which is connected with the DC bus, and an output end of which is connected with a stable AC power supply on a user side; a first bidirectional DC conversion module, a first end of which is connected with the DC bus, and a second end of which is connected with a first battery; a new energy power generation module, an output end of which is connected with the second end of the first bidirectional DC conversion module, and which is used for generating electric energy and adjusting power generation output power; a second bidirectional DC conversion module, a first end of which is connected with the DC bus, and a second end of which is connected with a second battery; and a control module, which controls each bidirectional DC conversion module. The application can obtain a stable AC power supply on the user side, can normally work even if the voltage on the input side is too low, has low demand for power grid power, and fully utilizes new energy to improve environmental protection, economy and efficiency.

The utility model discloses a ground wire pulling-free modularized power supply and a computer case, which comprise a rear side plate, the lower end of the rear side plate is connected with a bottom plate which extends forwards, the rear side plate is provided with a first mounting through hole and a second mounting through hole which are arranged at an interval up and down, and the front side surface of the rear side plate is connected with an internal thread column which extends forwards; a threaded connector is formed in the front end of the internal threaded column; the PCB is transversely arranged at the top of the bottom plate; the AC module comprises a male seat, an I / O switch, an AC board and a grounding screw; the male seat and the I / O switch are fixed on the AC board, pins of the male seat and the I / O switch are electrically connected with the AC board respectively, a locking through hole extending front and back is formed in the AC board, and a ground wire pin of the male seat is connected to the position where the locking through hole is located through a circuit on the AC board; the AC module is installed on the rear side plate from front to back, the male seat and the I / O switch are arranged at the rear ends of the corresponding first installation through hole and the second installation through hole in an exposed mode, the locking through hole directly faces the front side of the threaded connection port, and pulling-free ground wire is achieved.

The utility model relates to an off-grid inverter, which belongs to the technical field of inversion devices and comprises a casing and a main board arranged on the bottom wall of the casing, the main board is sequentially provided with a PV module, an inversion module, a DC-DC module and a battery module along the transverse direction, the front side of the PV module is provided with an AC module, the main board is provided with a copper bar jumper wire and a copper sheet, and the DC-DC module is connected with the battery module. The mainboard is connected with the PV module and the AC module through copper bar jumper wires, and the mainboard is connected with the battery module through a copper sheet. Wherein the PV module is a photovoltaic input module, the DC-DC module is a DC transformation module, and the AC module is an AC output module. According to the utility model, the PV module, the inversion module, the DC-DC module and the battery module are sequentially arranged along the transverse direction of the mainboard, the mainboard is connected with the PV module and the AC module through the copper bar jumper wire and is connected with the battery module through the copper sheet, and the inverter adopts a wireless design, has the advantages of compact structure, simplicity, order and convenience in wiring, and can improve the production efficiency.

The utility model discloses an alternating current and direct current charging socket with overlarge current, which relates to the field of alternating current and direct current charging sockets and comprises a panel, a direct current module and an alternating current module, the direct current module and the alternating current module are mounted on the panel, an aluminum row assembly is arranged on the direct current module, and the direct current module comprises a direct current charging socket mounting plate and an aluminum row male plug. A mounting space is formed between the direct current charging socket mounting plate and the panel, the aluminum bar male plug is arranged in the mounting space, the aluminum bar assembly comprises an aluminum bar mounting shell and aluminum bars, the aluminum bar mounting shell is fixed on the direct current charging socket mounting plate, one end of the aluminum bar mounting shell is provided with a plurality of aluminum bars, and the aluminum bars are fixed on the aluminum bar mounting shell. The aluminum row is longitudinally installed and connected with the aluminum row male plug, the panel is provided with an aluminum row female socket, the aluminum row female socket is matched with the aluminum row male plug in an inserted mode, a new energy automobile is charged through power transmission of the aluminum row, larger current can pass through, and the charging speed is improved.

The utility model discloses an AC / DC charging socket with a split slot terminal, which relates to the technical field of sockets and comprises a panel, a DC module and an AC module, the DC module and the AC module are mounted on the panel, the AC module comprises an AC mounting seat and a split slot terminal arranged in the AC mounting seat, and the split slot terminal comprises a copper pipe. The copper pipe is arranged in a hollow mode, a plurality of inserting grooves are formed in the inner wall of one end of the copper pipe, the inserting grooves are evenly distributed in the circumferential direction of the copper pipe, a female terminal is arranged in the panel, protrusions matched with the inserting grooves are fixed to the outer wall of the female terminal, a traditional terminal is replaced by a split-groove terminal, the inserting grooves are formed in the inner wall of the split-groove terminal, and the outer wall of the split-groove terminal is fixedly provided with protrusions matched with the inserting grooves. After the split groove terminal and the female terminal are plugged, the projection of the female terminal is matched in the plugging groove, thereby improving the connection strength of the female terminal and the split groove terminal, enabling the connection between the cable and the socket to be more stable, and improving the anti-vibration performance.

The application relates to the technical field of distributed optical fiber sensing systems, in particular to a high-gain low-noise distributed optical fiber vibration sensing system signal processing device and method, which is provided with a 2*2 coupler, two PIN photoelectric diodes, two AC filtering circuits, two transimpedance amplification circuits, a signal difference unit and a signal demodulation unit, the two transimpedance amplifiers realize conversion of a current signal into a voltage signal; the input end of the transimpedance amplifier is connected with an AC module, and the output end is connected with the signal difference unit; compared with the prior art, the two transimpedance outputs are combined with the AC filtering circuit, so that the range of the electric signal obtained through photoelectric conversion is increased, the input optical signal is fully utilized, the output signal is increased, the signal-to-noise ratio of the system is significantly improved, and the system measurement capability is enhanced.

The utility model discloses an overlarge current charging socket with a split slot terminal, which relates to the charging socket field, and comprises a panel and a direct current module and an alternating current module which are installed on the panel, the alternating current module comprises an alternating current installation seat and a split slot terminal arranged in the alternating current installation seat, the split slot terminal comprises a copper pipe, the copper pipe is arranged in a hollow mode, and the split slot terminal is arranged in the copper pipe. The inner wall of one end of the copper pipe is provided with a plurality of plugging grooves, so that the charging connection is more stable, the anti-seismic performance is improved, the direct current module comprises a direct current charging socket mounting plate and an aluminum row male plug, a mounting space is formed between the direct current charging socket mounting plate and the panel, and the aluminum row male plug is arranged in the mounting space. The direct current charging socket mounting plate is provided with an aluminum bar assembly, the aluminum bar assembly comprises an aluminum bar mounting shell and aluminum bars, the aluminum bar mounting shell is fixed on the direct current charging socket mounting plate, one end of the aluminum bar mounting shell is provided with a plurality of aluminum bars, the aluminum bars are transversely mounted, and the aluminum bars are connected with aluminum bar male plugs, so that larger current can pass through, and the charging speed is improved.

The utility model provides an energy storage device, which comprises a plurality of battery packs and a plurality of transmission circuits arranged correspondingly, each transmission circuit is provided with a voltage conversion module, and the battery packs are electrically connected with a direct current bus through the corresponding voltage conversion modules respectively; a shunt switch is arranged between the transmission circuits, when one transmission circuit is disconnected, the shunt switch is closed, direct current output by a battery pack on the other transmission circuit is shunted through the shunt switch, and one path of direct current flows through a voltage conversion module on the original transmission circuit to a direct current bus. And the other path passes through the closed shunt switch, flows through the voltage conversion module on the disconnected transmission circuit, is transmitted to the direct current bus, and is inverted by the DC / AC module to output alternating current. According to the technical scheme, the power output of the battery pack is shunted through the shunt switch and output to the plurality of voltage conversion modules for power allocation, and each voltage conversion module works with low power, so that the heating value of the voltage conversion modules is reduced, and the temperature rise of a parallel circuit of the battery pack is reduced.

The utility model relates to the technical field of electronic equipment, in particular to an inverter with an alternating-current copper bar heat dissipation structure, which comprises a reactor and an alternating-current module, the reactor comprises a reactor module, and the alternating-current module comprises an alternating-current switch; the reactor module is connected with the alternating current switch through a first copper bar; and a radiator is arranged on the first copper bar. And the radiator is additionally arranged on the first copper bar, so that a better heat dissipation effect is achieved, and the risk of overheat burning can be effectively avoided. And the radiator is used for replacing the existing radiating mode of increasing the volume of a copper bar, so that the usage amount of copper is greatly saved, and the cost is reduced.

The invention discloses a communicable frequency converter which comprises a frequency converter body with an inner cavity of a hollow structure and a functional device arranged in the inner cavity of the frequency converter body, the functional device comprises an AC / DC module, a DC / AC module, a rectification module, a transformer assembly, a control unit and a filtering module, and the input end of the AC / DC module is connected with a three-phase AC power supply. The output end of the AC / DC module is connected with the DC / AC module; the device has the advantages of being small in size and light in weight, under the cooperation of the AC / DC module and the DC / AC module, three-phase 115V / 360Hz-720Hz three-phase four-wire alternating current generated by onboard equipment such as a generator can be converted into single-phase pure and stable 220V / 50Hz alternating current standard mains supply, high efficiency and output power are achieved, power can be directly supplied to ground standard equipment, and the device can be widely applied to the field of power supply. The power supply can be used as aviation ground support equipment, a green gallery bridge, airport field operation, airplane maintenance and test, and a vehicle-mounted mobile power supply.

The present invention relates to a vehicle battery module comprising a power conversion device and a three-phase vehicle battery system based on a plurality of vehicle battery modules. The vehicle battery module comprises a battery, a DC / DC converter, and a three-phase AC unit for outputting a three-phase AC module voltage. Furthermore, the three-phase vehicle battery system comprises: a plurality of vehicle battery modules; a DC system output terminal connecting the DC module output terminals contained in each of the plurality of vehicle battery modules in parallel; and a three-phase AC system output terminal connecting the three-phase AC module outputs for each phase contained in each of the plurality of vehicle battery modules in series.

1. The name of the design product: robot access controller module lower cover. 2. The use of the design product: used for the four-legged robot AC module lower cover. 3. The design points of the design product: in the shape of the product. 4. The picture or photo that best indicates the design points: perspective view 1.

The utility model aims at providing a wide frequency domain AC / AC power supply system which has simple structure, purification function for power grid and variable output frequency. The utility model system includes the electricity taking CT (2) which takes electricity from the power grid (1), and the AC / DC module (3), the DC / AC module (4) and the three-phase output end (5) are sequentially connected in the rear end of the electricity taking CT (2), the positive line and the negative line between the AC / DC module (3) and the DC / AC module (4) are connected with a plurality of support capacitors (6). The utility model is applied to the power grid technical field.

The invention provides a multi-port alternating current and direct current hybrid topological structure suitable for flexible interconnection of a low-voltage transformer area, which comprises an energy storage battery, an AC bus, a DC bus, alternating current and direct current ports and a controller, and is characterized in that the alternating current and direct current ports provide a plurality of ports which are respectively connected with the AC bus, the DC bus, an alternating current load, a direct current load and a power grid, and the alternating current and direct current ports communicate with the controller; the AC / DC port provides a plurality of power conversion modules and comprises a DC / DC module, a DC / AC module I and a DC / AC module II, the AC / DC port provides a port which is connected to an AC micro-grid and a DC micro-grid, supports access to various devices such as an AC / DC source, a load, an energy storage device and a power grid, and adapts to diversified application scenes; a hierarchical control strategy of local control and power supply control is combined, so that system coordination requirements can be balanced, communication links can be reduced, and centralized management of alternating-current and direct-current power supplies is realized; the AC / DC port is provided with a DC / AC module, a DC / DC module and an equalization module, bidirectional conversion of power is realized, and the equalization module can effectively maintain voltage balance between DC buses.

This invention discloses a full DC aggregation system for offshore wind power with medium- and high-frequency AC transmission, relating to the field of DC power transmission technology. It includes: an offshore wind turbine module for acquiring medium-voltage DC power; a multi-port DC transformer module for converting the medium-voltage DC power into high-voltage DC power; a DC submarine cable module for aggregating the high-voltage DC power and transmitting it to an onshore converter station module; an onshore converter station module for acquiring onshore high-voltage AC power based on the aggregated offshore high-voltage DC power; and an onshore AC module for receiving the onshore high-voltage AC power, thus achieving full DC aggregation of offshore wind power. This invention, through improvements to the topology and control methods of the medium-voltage-to-high-voltage DC transformer, achieves efficient and economical power transmission, improves the economic viability and engineering application value of offshore wind power aggregation systems, and meets the market demand for affordable and low-cost power generation.

1. The name of the design product: robot access controller module cover. 2. The use of the design product: used for four-legged robot AC module cover. 3. The design features of the design product: the shape of the product. 4. The picture or photo that best shows the design features: perspective view 1.

The utility model aims at providing a simple structure, can realize single -phase or three -phase output and the power grid simulation power supply that frequency and phase can be adjusted. The utility model system includes the electricity taking CT (2) of taking electricity from the power grid (1), and AC / DC module (3) and direct current bus (4) are accessed in proper order in the back end of electricity taking CT (2), direct current bus (4) is connected with three way DC / AC module (5) respectively, and the output end of three way DC / AC module (5) is as three way independent single -phase and is output respectively, and three way single -phase output is A phase, B phase and C phase respectively. The utility model is applied to the power grid technical field.

This utility model discloses an aluminum busbar type AC / DC charging base, relating to the field of AC / DC charging bases. It includes a panel and a DC module and an AC module mounted on the panel. The DC module is equipped with an aluminum busbar assembly. The DC module includes a DC charging socket mounting plate and an aluminum busbar male plug. An installation space is formed between the DC charging socket mounting plate and the panel. The aluminum busbar male plug is disposed within the installation space. The aluminum busbar assembly includes an aluminum busbar mounting housing and aluminum busbars. The aluminum busbar mounting housing is fixed to the DC charging socket mounting plate. Multiple aluminum busbars are provided at one end of the aluminum busbar mounting housing. The aluminum busbars are installed horizontally and connected to the aluminum busbar male plug. The panel is equipped with an aluminum busbar female socket, which is plugged into the aluminum busbar male plug. Charging of new energy vehicles is achieved through the aluminum busbar, allowing for a larger current flow and improved charging speed.

This invention provides an online monitoring device for DC bus capacitors, belonging to the field of capacitor monitoring technology. It includes an AC / DC module for converting AC to DC, a DC / AC module for converting DC to AC, a current transformer module for acquiring current values, a voltage acquisition module for acquiring voltage values, a capacitor module for filtering, a temperature sensor module for measuring the temperature of the capacitor module, an ADC module for converting analog signals to digital signals, and a CPU module for data processing. The ADC and CPU modules operate on an ESR joint degradation model, calculate the capacitor capacitance and equivalent series resistance using a fast Fourier transform, and apply temperature compensation correction using a temperature coefficient. By analyzing the compensated parameters, a precise alarm is triggered when the capacitor capacitance is below 70% of its rated value or the equivalent series resistance exceeds 200% of its initial value. This solution requires no downtime and has an error of less than 5%.

The embodiment of the present application provides a kind of light storage direct current coupling control circuit and related device, wherein circuit includes: DC-AC module, DC-DC module and control module.Control module is used to calculate the alternating voltage and direct current voltage under multiple different bus voltage set values according to the actual output power of photovoltaic system and the output power demand value of DC-AC module, alternating voltage is the alternating side output voltage when DC-AC module reaches maximum conversion efficiency, direct current voltage is the charging voltage of energy storage module when DC-DC module reaches maximum conversion efficiency;According to different bus voltage set values and alternating voltage and direct current voltage under different bus voltage set values, determine the target bus voltage value, target alternating voltage value and target direct current voltage value when energy storage module reaches maximum charging power, and control multiple photovoltaic systems, DC-AC module and DC-DC module correspond to target bus voltage value, target alternating voltage value and target direct current voltage value output.

The utility model relates to the technical field of power supply, concretely relates to a long distance power supply system, and the system includes AC / DC module, DC / AC module, lithium super energy storage module and control system, each module is connected with control system, AC / DC module is connected with power grid side, and DC / AC module is set between AC / DC module and load, lithium super energy storage module is connected in parallel between AC / DC module and DC / AC module, and control system includes control algorithm module, and control algorithm module integrates PWM rectification algorithm module, PWM inversion algorithm module, voltage outer ring + current inner ring double -closed -loop control algorithm module, low pass filter algorithm module and voltage equalization control algorithm module. Adopt the long distance power supply system provided by the utility model, solved the problem that long distance power supply voltage pressure drop is big, through lithium super energy storage module smooth output power and emergency power supply, improve long distance power supply stability.

The invention discloses a household optical storage system based on intelligent layered direct current bus scheduling, and relates to the technical field of photovoltaic energy storage, the household optical storage system comprises a direct current boost module, a bidirectional DC / DC module, a bidirectional inversion DC / AC module, a scheduling module and a database, circuit power-on initialization is carried out through built-in parameters, whether secondary initialization needs to be carried out or not is judged, and if yes, power-on initialization is carried out; meanwhile, the dispatching module receives photovoltaic MPPT information, energy storage battery information and load information through the direct-current boosting module, the bidirectional DC / DC module and the bidirectional inversion DC / AC module, calculates a system health degree index, judges whether the system health degree is abnormal or not, dynamically generates direct-current bus reference voltage, and sends the direct-current bus reference voltage to the power supply module; according to the technical scheme, the system can process the electric energy and coordinate the power of each module at the same time, so that the system can quickly output the power, the stability of the voltage of the direct-current bus and the stability of the household optical storage system are guaranteed, and the service life of an energy storage battery is prolonged.

The invention discloses a modularized charging socket which comprises a panel, a socket assembly, an alternating current module, an alternating current and direct current switching unit and a direct current module. The socket assembly is arranged in the panel and comprises a socket main body and at least one direct current charging terminal fixedly mounted in the socket main body; the AC module is connected with the socket assembly, and an installation space is defined between the AC module and the socket assembly; the AC / DC switching unit is installed in the installation space. The direct-current module is connected with the alternating-current module and is far away from the panel; the direct current charging terminal sequentially passes through the alternating current module, the alternating current and direct current switching unit and the socket assembly, and at least part of the direct current charging terminal extends into the jack. According to the invention, the technical defects of complicated parts, large occupied space, low assembling and testing efficiency and high adaptation cost caused by a traditional split type framework can be overcome.