1. New Energy Generation
The 1992 United Nations Framework Convention on Climate Change, the 1997 “Kyoto Protocol,” and the 2015 “Paris Agreement” are three milestone international agreements in human history addressing climate change, reaching a consensus on energy conservation and environmental protection.
Photovoltaic (PV) power generation is a green and low-carbon lifestyle. In recent years, global photovoltaic power systems have shown a trend of annual growth, with global installed photovoltaic capacity reaching 300GW in 2016. China’s total installed capacity was 77.42GW, followed by Japan, the United States, and Germany. By 2050, photovoltaic power generation is expected to account for 50% of global electricity generation, with a significant increase in the number of new solar power stations worldwide.
Typically, solar panels are connected in series to generate the required voltage and form a “photovoltaic module” producing several megawatts of power, which is then integrated into the grid. All photovoltaic modules can be connected in parallel with multiple inverters. A solar power station requires thousands of solar panels, and engineers must monitor the performance of the entire equipment to ensure the safe and efficient operation of the photovoltaic system.
A solar power station requires thousands of solar panels, and the performance of the entire equipment must be monitored to track whether the photovoltaic groups reach the maximum power point (MPP) to ensure the overall efficiency of the photovoltaic system. A photovoltaic system includes photovoltaic modules, combiner boxes, and grid-connected inverters. Each component needs to monitor current and voltage to assess system efficiency and safety. When multiple photovoltaic modules are connected in parallel to the inverter through a smart combiner box, monitoring the operating current of each photovoltaic group can effectively monitor the working status of the photovoltaic components, achieving system monitoring and protection through real-time tracking with current sensors.
Under the influence of the global energy crisis, solar energy has become one of the main choices to mitigate the energy crisis. Photovoltaic grid-connected power generation is an important way for people to utilize solar energy. Traditional centralized photovoltaic grid-connected systems consist of many closely connected solar panels. These panels are first grouped in series and then connected in parallel to form a photovoltaic array. The direct current generated by the array flows to a centralized grid-connected inverter located beside the panels, which performs DC/AC conversion to connect to the grid and identifies the maximum power tracking point to optimize the efficiency of the photovoltaic grid-connected system. As technology matures and continues to develop, the issues with centralized photovoltaic grid-connected power generation systems are gradually attracting attention.
SINOMAGS has introduced CTS series products, STK-616 series, and STK-HD series products, which occupy a place in micro-inverter applications due to their low cost, small size, and high-frequency response.
2. Residential Energy Storage Inverter
The energy storage industry has been accelerating in recent years due to dual factors of policy support and improved economics.
- Policy Aspects: Countries like the United States, Portugal, and Japan have introduced various policies and documents to support the development of energy storage businesses. These include providing certain subsidies for energy storage projects and regulating industry development by relaxing industry entry fields.
- Economic Aspects: With advancements in battery technology and cost reductions, the cost of stored energy per kilowatt-hour has significantly decreased. We expect that the cost of energy storage systems per kilowatt-hour will drop from 1.78 yuan in 2019 to 1.16 yuan in 2025. In the long term, even after the cancellation of storage subsidies, the improved economics of energy storage systems will be the core support for the sustained growth in demand for energy storage.
The high growth rate of the energy storage business can be maintained over the long term. The global residential energy storage market space exceeds 2000 GWh, while the global energy storage shipment volume in 2020 was only 20 GWh.
