10 results about "AC module" patented technology

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 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 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.

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.

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.

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.