Solar station and parallel inverter power supply current sharing control method
A technology of inverter power supply and solar energy, which is applied in the field of distributed energy power supply control, can solve the problems of power output power quality decline, power utilization rate reduction, and affecting the service life of loads, etc., to achieve the goal of parallel current sharing, suppress circulation, reduce The effect of wasting energy
Active Publication Date: 2021-05-14
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology
When multiple inverters are used in parallel, due to the differences between the parameters of each inverter, the imbalance of the output voltage and current of each inverter will cause a circulating current in the circuit, and the existence of the circulating current will reduce the quality of the output power of the power supply. , the power utilization rate is reduced, which affects the service life of the load
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[0034] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0035] The solar station module diagram of the present invention is as follows image 3 As shown, it includes solar photovoltaic panels, battery energy storage system, inverter power control system, mobile phone charging pile and LED display. The solar photovoltaic panel is connected to the mobile phone charging pile and the battery energy storage system. After the solar photovoltaic panel generates electricity, most of the electric energy is converted by the DC / AC converter and directly supplied to the mobile phone charging pile, and the remaining part of the electric energy is transferred to the battery. in the energy storage system. The battery energy storage system supplies power to mobile phone charging piles and LED display screens through the inverter power control system to store excess electric energy, improve energy...
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The invention discloses a solar station and a parallel inverter power supply current sharing control method. The station comprises a solar photovoltaic panel, a storage battery energy storage system, an inverter power supply control system, a mobile phone charging pile and a display screen, the solar photovoltaic panel is connected with the mobile phone charging pile and the storage battery energy storage system; and power generated by the solar photovoltaic panel is directly supplied to the mobile phone charging pile for use, residual electric energy is transferred to the storage battery energy storage system, and the storage battery energy storage system supplies power to the mobile phone charging pile and the display screen after being subjected to parallel current sharing through the inverter power supply control system. According to the invention, the safe and stable operation of the electric equipment is ensured, and the fluctuation of the power grid voltage caused by the redundant electric energy on the grid is also avoided. Energy can be fully and reasonably utilized, and stable balance of electricity utilization voltage and current can be guaranteed.
Description
technical field [0001] The invention relates to a distributed energy supply control method, in particular to a current equalization control method for a solar station and a parallel inverter power supply. Background technique [0002] Solar photovoltaic power generation technology has been widely used today. With the intensification of energy problems, the advantages of solar photovoltaic power generation are becoming increasingly obvious. The number of solar stations is also increasing with the development of the city. [0003] When the solar station performs photovoltaic power generation during the day, most of the photovoltaic power generation is consumed by the station itself, but some power is still not used. At this time, if this small portion of electric energy is networked and transmitted to the grid, although the electric energy generated by solar photovoltaic panels can be fully utilized, it will cause many negative effects at the same time, such as increased netw...
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IPC IPC(8): H02J3/32H02J3/38H02J7/35B60L53/51B60L53/67
CPCH02J3/322H02J3/381H02J7/35B60L53/51B60L53/67H02J2300/24H02J2310/48Y02T10/70Y02T10/7072Y02T90/12Y02T10/72Y02E70/30Y02E40/10Y02E10/56
Inventor 侯健敏徐志豪余威杰周颖路新梅丁苏云
Owner NANJING UNIV OF INFORMATION SCI & TECH