Jinlong launches six products simultaneously, targeting the 4G era of photovoltaic inverters

The picture shows the E7-001 new product launch at the SNEC Jinlong booth

The picture shows Mr. Zhou Yuan, Secretary General of PGO Photovoltaic Green Ecological Organization, delivering a speech at the new product launch conference

Pictured is Mr. Xu Hailiang, Vice President of Smart Power Equipment & Photovoltaics, TUV SUD Greater China, delivering a speech for the new product launch

Jinlong inverter "Six Arrows"

It is reported that at the E7-001 booth, which was full of fashion, coolness and avant-garde factors and surrounded by beautiful women and red envelopes, five series of products under Ginlong Technology, including MINI inverter, single-phase inverter, 20-40kW three-phase inverter, 50-70kW three-phase inverter and energy storage inverter, were also unveiled simultaneously, demonstrating the seamless integration of technological innovation and humanistic feelings to the extreme.

It is understood that these five inverters of Jinlong Technology not only have common characteristics such as high MPPT efficiency, low starting voltage, low grid-connected voltage, high switching frequency and high power generation efficiency, but also have completely different characteristics in their respective application fields.

More importantly, these five products can also be implanted with anti-backflow energy management and control functions, allowing users to understand the power provided by the inverter to the load in real time. By controlling photovoltaic energy in real time, all the energy generated by photovoltaic power generation can be used for local loads, thereby making full use of photovoltaic power generation, reducing the burden on the power grid and further improving the stability and efficiency of the inverter system.

The picture shows the innovative technology highlights of Jinlong entering the inverter 4G era

Jinlong's first arrow: mini inverter

According to reports, Jinlong mini inverters are not only reliable in quality and long-lasting in efficiency, but also have a maximum efficiency of up to 97.5%, which can ensure the conversion efficiency to a greater extent, reduce switching losses, and extend the service life of components. The MPPT voltage range of this product is 50-500V, and the starting voltage is 60V. The lower MPP lower limit voltage and lower starting voltage can allow the inverter to obtain more energy in the morning and evening.

In addition, Jinlong mini inverter uses the latest generation of IGBT from Infineon. By properly configuring the parameters, the switching loss of the inverter can be minimized while taking into account good EMC characteristics. At the same time, by optimizing the structural design and placing the inductor externally, the temperature inside the inverter housing is reduced, the loss of magnetic components is reduced, and the overall efficiency of the inverter is improved. Industry data shows that the life of electronic components can be doubled for every 10 degrees Celsius reduction in the ambient temperature of the electronic components.

The picture shows the SNEC Jinlong booth

Jinlong's second arrow: single-phase inverter

Jinlong 4G single-phase inverter also has the characteristics of high performance, high safety and high grid friendliness. The maximum power of this product can cover 6-10kW, which is higher than the market level of most single-phase inverters with a maximum power of only 6kW. It adopts a maximum of 3-way MPPT tracking, which can be expanded to 4-way, and the multi-way MPPT technology further improves the power generation efficiency. The switching frequency exceeds 30kHz, and the 10kW power model has become the lightest string inverter in the same power level on the market.

Jinlang's third arrow: 20-40kW large three-phase inverter

In addition to having the same functions as the above products, Jinlong Technology launched a 20-40kW large three-phase inverter for industrial and commercial rooftop projects at this SNEC. The system's maximum efficiency can reach more than 98.8%, and it can also achieve 4-way MPPT access, with higher power generation efficiency. Fanless heat dissipation and intelligent PLC photovoltaic panel tracking system can make the application more flexible and intelligent. Jinlong added a "tracking angle control circuit board" and "PLC motor controller", sensors, and a PLC intelligent tracking controller composed of motors to the 20-40kW string inverter. The system can determine and drive the bracket to face the direct sun point through an intelligent program, and track the sun's east-west movement trajectory in real time. It is suitable for distributed photovoltaic power stations with various innovative photovoltaic + modes such as water photovoltaics, agricultural photovoltaics, and fish photovoltaics. In combination with the tracking bracket system, it can increase the annual power generation by 20%-30%.

Jinlang's fourth arrow: 50-70kW three-phase inverter

Aiming to improve power generation efficiency, grid security and friendliness, every product launched by Jinlong Technology is based on innovation and customer satisfaction. Its 50-70kW three-phase inverter not only has a maximum efficiency of 99%, which is 0.5 percentage points higher than the Chinese efficiency standard of 98.5%, but also uses 4 MPPT accesses with a rated value of 28.5A per channel, compatible with high-power components, and has a THDi of less than 3%, which has small harmonics to the grid; at the same time, it is anti-resonant, and the single transformer can be connected in parallel with a capacity of more than 6M; it has the characteristics of a complete power station monitoring solution and intelligent backup redundant heat dissipation design. LCL filtering + intelligent reconstruction effectively suppresses grid resonance: It is understood that compared with traditional single-inverter systems, multi-inverter systems have multiple resonant frequencies, and the number of resonant frequencies is related to the type of inverter in the system. In order to suppress the voltage and current ripples generated by high-frequency switching and multi-system parallel connection, an LCL filter is usually added between the grid-connected inverter and the grid. Compared with the single-inductor L filter, the LCL filter has a stronger suppression ability for the high-frequency component of the current. At present, some manufacturers solve this resonance problem by adjusting the parameters of the inverter filters differently. However, when the capacity of the single unit is expanded, the resonance problem will still occur, and it will also cause the harmonic THDI of the power grid to be relatively poor.

It is worth mentioning that in line with the principle of continuous improvement, in addition to LCL filtering, Jinlong Technology's inverter also performs "intelligent reconstruction" of grid voltage sampling, processes the sampled grid signals, filters out useless high-frequency signals, and retains useful fundamental signals, thereby avoiding the introduction of high-frequency fluctuations. Active damping control algorithm strategy is used to suppress grid resonance caused by the connection of multiple inverters.

The picture shows the on-site activities at the Jinlong booth

Jinlong's fifth arrow: energy storage inverter

In the field of energy conversion, Jinlong Technology is also making all-out efforts to innovate in the field of energy storage. At this year's SNEC exhibition, Jinlong also launched a four-in-one energy storage inverter that integrates charging, discharging, power storage and smart energy management. This product realizes fully intelligent energy management, adopts technologies such as battery SOC intelligent detection and precise MPPT algorithm, and can maximize the efficiency of energy storage and household use according to climate conditions, achieving maximum self-generation and self-use. In addition, this product is also compatible with a variety of 48V lithium batteries, supports CAN, RS485, Wi-Fi and GPRS communications and multiple protection functions.

In addition to launching five world-leading inverter products, Jinlong Technology's perfect integration of inverter technology and Internet+ - Jinlong Cloud 4G Smart Energy Solution also made its debut, once again shining at SNEC.

Jinlang's Sixth Arrow: Jinlang Cloud

Compared with the technicality, professionalism, innovation and comprehensiveness of Jinlong inverters, the "Jinlong Cloud" 4G smart energy solution is relatively simple, rough and direct. Its biggest feature is that it can meet the application needs of users at all levels, from novices to professional users.

The picture shows the Shanghai Lucky Star Football Team specially invited by Jinlang to speak out for public welfare photovoltaics

Three highlights of Jinlang Cloud

First of all, the user operation and reading interface of "Jinlang Cloud" is extremely simple. It includes data that users care about, such as power generation, power generation curve, power statistics, overall picture of the power station, environmental protection contribution, etc., which can be handled in one interface. It is simple but not without value.

Secondly , the real-time data, log records, fault and abnormal diagnosis, system operation reports, and fault alarms of "Jinlang Cloud" can be set up for email and SMS push, so that the operation status of the power station can be monitored in time. The inverter can be set remotely without manual intervention, which is convenient and fast.

Third, "Jinlang Cloud" has built-in operation and maintenance module functions. Users, power stations, equipment ledgers, and multi-level user role permissions can all be managed with one click. Its safe, reliable, and scalable features can meet various operation and maintenance needs of distributed power stations.

Three major technical features of "Jinlang Cloud"

The key to success is simplicity, and innovation is the key. Jinlang Cloud has many highlights, which are due to the following three technical features.

(I) Intelligent monitoring : Automatically prompt fault information, equipment with poor power generation performance, and monitor a certain string of inverters.

(ii) Intelligent diagnosis : It can automatically diagnose the equipment with poor power generation performance of the inverter in the power station. For the combiner box, it can diagnose the poor performance of a certain string and provide targeted solutions.

(III) Big data analysis : power station performance analysis, maximum output curve analysis, loss analysis, equipment array performance analysis, etc., can realize energy data monitoring, fully visualized and traceable operations, thus making it controllable, manageable and adjustable.

Industry insiders said that with user and customer satisfaction as the axis and technological innovation as the driving force, Jinlong Technology has the courage to assume industry responsibilities, focusing on increasing efficiency and reducing costs, and focusing on research and development. It has been specializing in inverters for 12 years. Its "craftsman" spirit and Internet thinking have not only promoted the entire inverter industry to develop towards high precision and popularization, but also promoted the entire photovoltaic industry to accelerate its move towards a universal era.

Being pragmatic yet innovative, it can be expected that Ginlong’s performance at the SNEC exhibition today is just a small step in its development. In the future, it will bring more new products to the industry and create more “surprises”!