Revealed! How 1500V string inverters “empower” bifacial modules

As the bridge and link of the photovoltaic power generation system, the inverter's "empowerment" is particularly important in order to better utilize the "performance" of the components.

With the continuous advancement of the photovoltaic "leader" plan, it has played a very significant role in promoting the application of advanced technologies in photovoltaic equipment and industrial upgrading. In particular, photovoltaic equipment technology has continuously pushed forward new heights, and the conversion efficiency of components has been continuously improved. From polycrystalline to monocrystalline, from ordinary to high-efficiency, from single-sided to double-sided, each technological upgrade and iteration will promote the photovoltaic industry to achieve grid parity as soon as possible.

A photovoltaic power station is a comprehensive system project. Only by ensuring that each device is seamlessly "connected" and matched can the efficiency of each device be maximized.

With 18 years of experience in the development of photovoltaic inverter products and the design of system solutions, TBEA New Energy has launched the best "CP" (best partner) for high-efficiency bifacial modules - the 1500V string inverter TS100KTL-HV. The product's natural anti-reverse connection characteristics and 100% string MPPT penetration technology have attracted the attention and recognition of the industry; at the same time, the unique design of the TS100KTL-HV inverter AC side and power station system solution makes it the biggest weapon for "empowering" bifacial modules. In the early stage, we focused on the interpretation of the 100% penetration rate of the DC side string MPPT, see: (? "For the "leader" | The best CP inverter for bifacial batteries is here!"), today we focus on the unique design of the inverter AC side and power station system solution.

"One stone, three birds" makes design more flexible

With the gradual professionalization and maturity of photovoltaic industry technology, the current domestic DC side ratio for Class I, Class II and Class III regions has also been slightly enlarged. At the same time, facing the flexibility of the back gain of "bifacial components", the industry consensus gain is generally 10% to 30%, depending on the selection of brackets and the background of power station laying. In order to ensure that the bifacial components can fully exert their "performance", TS100KTL-HV has a 1.3 times overload design on the AC side. This design not only ensures the normal operation of the inverter in various environments, but also enables the selection of photovoltaic brackets according to local conditions, and can also ensure the smooth output of the peak power of the power station, which can be said to have achieved "three birds with one stone".

800Vac rated voltage brings higher profits

Reducing losses and increasing system power generation means increasing revenue! The TS100KTL-HV series inverter has an AC rated voltage of 800V. Compared with the industry's 690V inverter system, it can reduce AC side cable losses by 25.61% and increase system power generation by 0.5122% at the same power. The internal rate of return of photovoltaic power stations in Class I, Class II and Class III regions across the country has increased by different proportions, making investment more valuable, increasing returns and growing profits.

3MW photovoltaic array makes investment lower

At present, the specifications of string inverters are constantly increasing, and the size of the array is also increasing. From the initial 1MW array to the 1.6MW array in 2015-2016 and the 2MW array from 2017 to now, they are all mainstream in each period. In 2018, TBEA TS100KTL-HV increased the rated power level of the inverter to 100kW, and the unit array is fully compatible with 2/2.5/3MW arrays, and the output side does not need to be equipped with an AC combiner box.

TS100KTL-HV string inverter supports 3MW photovoltaic array design. After detailed calculation

（） The photovoltaic power station array unit can be upgraded to 3MW without changing the original cable diameter. The line loss meets the industry design requirements. Compared with the traditional 2MW array, it can save more than 25% of land and foundation construction, reduce more than 25% of the number of on-site equipment handling and hoisting times and installation workload, reduce the number of system electrical equipment and the cost per watt, reduce the construction cost of the power station, and increase the profit.

Intelligent and efficient, leading in innovation.

TBEA TS100KTL-HV string inverters are designed to innovate technology from the DC side, AC side and overall system design in response to the characteristics of bifacial modules and the increasingly complex application conditions and technical indicators of photovoltaic "leader" projects. The DC side of the product increases the system power generation by 0.5% through refined detection and independent branch tracking design; the industry's only independent MPPT design for each string increases the string MPPT penetration rate to 100%, completely eliminating the parallel mismatch of the photovoltaic power station components themselves and the parallel mismatch loss of the strings caused by periodic shadow shielding, allowing the system power generation to be maximized, and can increase the system power generation by at least 4% under complex conditions. In order to reduce losses, the rated voltage level of the AC side of the TS100KTL-HV string inverter is directly raised to 800V, and the system power generation is increased by 0.5122%. In particular, the 1.3 times overload inverter has an unlimited power design, which ensures that the bifacial components can fully exert their "performance". In terms of safety, the independent MPPT design makes the string inverter have natural anti-reverse connection, making the system run safely and stably. The array unit of the photovoltaic power station is increased to 3MW, which reduces the investment cost, promotes the innovation and upgrading of the photovoltaic industry, and promotes the grid parity of photovoltaic power generation.