A four-quadrant bidirectional energy storage inverter based on igbt technology
A two-way energy storage inverter, four-quadrant technology, applied in the direction of output power conversion device, AC power input conversion to DC power output, electrical components, etc., can solve the problem of reducing the stability of the power grid system, the volatility of the power supply system, and the security of the power grid Hidden dangers and other problems, to achieve the effect of reducing conduction loss, improving power quality, and ensuring cooling effect
Inactive Publication Date: 2017-08-18
辽宁立德电力电子股份有限公司
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Problems solved by technology
[0002] With the construction of new energy and the large-scale grid-connection of distributed power sources, especially wind and solar energy storage, the resulting problems of power supply system volatility, intermittency, randomness, and uncontrollability have brought serious problems to the power grid. potential safety hazards, reducing the stability of the power grid system and causing various power access problems
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[0050] The specific embodiment of the present invention is further described below in conjunction with accompanying drawing:
[0051] Such as figure 1 , 2 As shown, the hardware structural part of a four-quadrant bidirectional energy storage inverter device based on IGBT technology in the present invention includes a DC capacitor, an energy storage unit, an inverter unit, a connection reactor, a voltage Hall, a current Hall, a charging resistor, Discharge resistor, grid circuit breaker. The energy storage and inverter units are respectively composed of a main controller, a touch screen, a power unit, a contactor, a UPS power supply, a power switch, a fan, and a lightning arrester, and are connected to respective connecting reactors through cables, wherein the power unit is mainly in the form of an IGBT (Insulated Gate Bipolar Transistor (Insulated Gate Bipolar Transistor) and IGBT drive board are the core components, connected to the main controller through optical fiber, th...
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The invention relates to a four-quadrant bidirectional energy storage inverter device based on IGBT technology. The energy storage and inverter units are respectively composed of a main controller, a touch screen, a power module, a contactor, a UPS power supply, a power switch, a fan, and a lightning arrester. The cables are connected to the respective connecting reactors, in which the power module uses IGBT as the core component, the UPS power supply, fan and power switch are connected to the 380V power supply through the wires, and the connecting reactors are connected to the grid system through the cables through the charging resistor and the circuit breaker; the DC capacitor It is connected to the power module through the discharge resistor and the copper bar through the cable; the voltage and current hall is connected with each main controller through the wire. The beneficial effects of the invention are: the on-site operating efficiency is as high as 98.7%; the harmonic content of the output of the device is less than 2%, which greatly improves the output power quality and can be adjusted according to the actual grid conditions.
Description
technical field [0001] The invention relates to the field of power distribution technology, in particular to a four-quadrant bidirectional energy storage inverter device based on IGBT technology. Background technique [0002] With the construction of new energy and the large-scale grid-connection of distributed power sources, especially wind and solar energy storage, the resulting problems of power supply system volatility, intermittency, randomness, and uncontrollability have brought serious problems to the power grid. Potential safety hazards reduce the stability of the power grid system and cause various power access problems. The use of bidirectional energy storage and inverter devices is the best solution to improve the stability, safety, and reliability of the power system, realize the smooth access of renewable energy, and improve the quality of distributed power grid-connected power. The two-way energy storage inverter device can cooperate with the new energy system...
Claims
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IPC IPC(8): H02J3/32H02M7/797
Inventor 张玉良李檀张三勇关微郭洪月张津铭陈明非乔雷赵娇
Owner 辽宁立德电力电子股份有限公司