Although the PV policy has made the industry somewhat confused, for the photovoltaic manufacturing industry, how to turn the solar energy into electricity is very clear. For many devices of a photovoltaic power plant, today we will talk about one of the core equipments. As an important bridge connecting components and power grids, transformers improve power generation efficiency.
In recent years, China's photovoltaic power generation has developed rapidly. Due to the shortage of land, many photovoltaic power plants are built on more complex terrain such as hills and mountains. When the components are inconsistent due to shadow obscuration or orientation, series and parallel connection will occur. Mismatch. Simply put, in these very complex terrains, traditional string inverters usually connect two or more strings to one MPPT (ie 'maximum power point tracking'), meaning that the inverter is based on the outside world. Different ambient temperature, light intensity and other characteristics to adjust the output power of the PV array, so that the PV array always outputs the maximum power), can not make all the strings work at the maximum power point at the same time, it will cause power loss!
Zhou Hongwei, general manager of WISCO Xi'an Electric Technology Co., Ltd. (hereinafter referred to as 'special change electrician') photovoltaic product line said: 'According to the data of the third batch of photovoltaic front runner bases, complex conditions (mountain, hills, gullies account for more than 50%, Even the maximum slope exceeds 45 degrees) has become the main application environment for the front runner base. The resulting installation orientation is inconsistent, the installation inclination angle is inconsistent, and the shadow obscuration causes problems such as parallel mismatch between the strings.
Currently, in order to increase power generation, photovoltaic double-sided power generation is now very common, and the third batch of photovoltaic front-runners occupy a large share of double-sided components. The popularity of double-sided components has also been proposed for traditional string inverters. challenge.
So, is there a solution that can completely solve the loss caused by parallel mismatch between strings? Matching the application of higher power double-sided components? In response, TBEA Zhou Hongwei gave two answers called TS80KTL_PLUS and TS75KTL_BF. product.
According to reports, TS80KTL_PLUS biggest feature is the 12-channel MPPT, independent control of each channel string; MPPT penetration rate of 100%, completely solve the problem of adapting parallel strings Zhou Hongwei expressed: 'TS80KTL_PLUS can be flexibly applied to complex distributed commercial rooftop. mountains, hills and other environmental, power station in a mountainous Yunnan, the model of a market comparison measurement products generating capacity of more than 4% higher than the port. mismatch and block the loss of photovoltaic power generation accounted for the loss, controllable extent, enhance the potential for both large To be sure, the double-sided mismatch and block the loss of power will be greater, therefore, the choice of 100% MPPT penetration of inverter can effectively solve this problem. '
For the double-sided component system, the MPPT penetration rate of the TS75KTL_BF is increased from 25% to 100% of the conventional string inverter, completely solving the power loss caused by the series-parallel mismatch of the photovoltaic group; and also being flexible for large-scale ground. , mountain, hills and complex distributed commercial roof environment; at the same time, as a new dual-purpose component inverter, TS75KTL_BF output overload capacity of up to 20%, perfect matching double-sided components in a variety of complex environments.
In fact, not only in the photovoltaic front runners, after the PV '5.31 New Deal', the parity Internet is once again on the agenda, and the demand for efficient equipment is more urgent. As the core equipment of photovoltaics, the technical progress and actuality of the inverter The application will greatly contribute to the high quality development of photovoltaics.
