Solar photovoltaic inverter grid layout and safety issues

Governments and power companies are expected , photovoltaic (PV) power generation will supply the amount of energy they account for a large proportion. The solar cell is converted into direct current and alternating current power grid synchronization , the design can be demanding in the future even more so. PV inverters have a wide power range and operating conditions to achieve maximum efficiency , and must also comply with strict safety requirements. Ultimately depends on performance of the inverter based power accurately measured . PV inverter manufacturers need to work closely with the sensor manufacturer , to ensure support for the latest trends in photovoltaic technology .

Our world is asked to use "green" renewable energy alternatives to fossil fuels to benefit the environment . Forecast for the near future reality of the power supply system includes a variety of energy scenarios , in which there are a variety of configurations scale solar energy , both covering several hectares of large-scale power plants , there are also single-family use of the device. This will promote the photovoltaic (PV) solar inverter market, strong growth. Even in the current economic downturn , it is expected PV market in 2013 will reach 34 billion U.S. dollars . About PV market considerations , a relatively new device is expected of all sizes will be connected to the grid ; Even the single-family home system, if the load generating capacity exceeds local needs , but also to the power transmission and sale of electricity companies .

PV system to achieve its potential, it is necessary to improve the efficiency of power generation in order to reduce the cost per kilowatt . As we all know , solar cell manufacturers have been working to enhance the solar radiation into electricity based efficiency ; manufacturers are designing the next generation of photovoltaic inverters, diagnostics and other features by adding increasing power and efficiency , increased intelligence and functionality. The latest trend is a multi- string technology : the series connected solar cell consisting of a plurality of series connected to a single modified sine wave inverter , wherein each cell has its own maximum power point tracking (MPPT) device , thereby maximizing energy production . Solar power cells are difficult to use .

Battery is open, the output voltage of about 0.6 volts nominal : Normally each solar panel up to 72 cells , the formation of 44 volts open circuit. The battery can be a certain level of short-circuit current of the output . At a point between these limits , the battery voltage and current in a lower maximum power output . This maximum power point with the operating conditions ( such as the projection of solar radiation ) changes, so this point, the inverter must be tracked in order to maintain maximum efficiency. Designers rely on the instantaneous voltage and current data acquisition sensor, software algorithms do this.