Nested photovoltaic inverter in the role of solar photovoltaic power generation is assorted

Will use in the solar photovoltaic power generation system to the junction box, also known as solar junction box, solar pv junction box, photovoltaic array convergence of lightning protection box, solar junction box, photovoltaic junction box, pv junction box were expounded. In order to reduce the solar

in the solar photovoltaic power generation system, will use the parent box, also known as solar mother box, solar photovoltaic mother mother photovoltaic array lightning protection box, box, solar photovoltaic power generation female head, mother photovoltaic box, lightning protection box. In order to reduce the pv array and inverter to the connection box, the user can be a certain number of the same specifications of the photovoltaic cells together to form a photovoltaic array, and then several photovoltaic array is parallel to the pv bus lightning protection box. Inverter is a device composed of a semiconductor device power adjustment, is mainly used to convert the DC power to ac power. It usually consists of a booster circuit and inverter bridge circuit. Booster circuit of DC voltage booster from solar cells to the DC voltage to control inverter output; Contravariant bridge circuit will boost after the DC voltage is transformed into public frequency ac voltage. Inverter is also called the power regulator, according to its application in photovoltaic power generation systems, can be divided into independent power supply and grid power supply. According to the waveform modulation mode, can be divided into the square wave inverter, staircase inverter, three-phase inverter sine wave inverter and combination. For grid inverter used in the system, according to the presence of transformer, can be divided into the transformer type inverter and transformer type inverter. Inverter is mainly composed of switch components such as transistors, by regularly repeat on-off switch components, DC input into ac output. Of course, simply by opening and closing the loop to generate the inverter output waveform is unrealistic. Usually, need high frequency pulse width modulation ( SPWM) To narrow the nearby voltage width on both ends of the sine wave, and widen the center of the sine wave voltage width. Switch element is always in a half cycle to work on a certain frequency in one direction, forming a pulse sequences ( Quasi sine wave) 。 And then let the formation of sine wave pulse through a simple filter. After sunrise in the morning, the sun radiation intensity gradually increased, the output of the solar cell is increased. When reach inverter running the required power output, the inverter will automatically start running. Enter after the operation, the inverter will has been monitoring the output of the solar cell module. As long as the output power of the solar cell module is greater than the required output power inverter, inverter will continue to work. Inverter can even run in the rain, stop until sunset. When the output of the solar cell module smaller and the output of the inverter is close to zero, inverter form a standby mode. The output of the solar cell module as the solar radiation intensity and the temperature of the solar cell module itself ( The chip temperature) And change. In addition, because the solar cell module has the characteristics of voltage and decreased with the increase of current, thus obtain good working point of high power. Booster station electrical system mainly includes the collector circuit, low voltage power distribution equipment, the main transformer, high voltage power distribution equipment, geographic information system, reactive power compensation, and stood with earthing transformer system, measurement and control device, communication, relay protection and monitoring system, etc. And can realize remote communication, remote measurement, remote control and remote control function.