TSUN

Driven by both market and policy, "Photovoltaic + Energy storage" is rising rapidly in developed markets such as Europe, Australia and other countries. At the same time, the development of distributed industrial and commercial energy storage system appears new opportunities after the “531” new policy in China's domestic photovoltaic market. In 2019, the cumulative installed capacity of electrochemical energy storage rapidly broke through the "GWH". Electrochemical energy storage is expected to be in a turning year of large-scale application, but also exposed a large number of potential safety hazards. As the "CPU" of the whole energy storage system, the PCS urgently needs high-reliability products to provide a strong heart for the energy storage system. TSUNESS brings together the core team of the industry's top senior technical engineers, with the support of learning and research from institute and university, covering the core technical cap...

Growing solar photovoltaic demand In the past 2019, global solar photovoltaic installed capacity has also grown tremendously. Taking the European Union as an example, according to data from Solar Power Europe, 2019 is the best year for solar photovoltaic development in the European Union, with 16.7 GW of new installations, an increase of 104% (8.2 GW of new installations in 2018). Spain increased its installed capacity by 4.7 GW in 2019, making it the EU’s largest solar market, followed by Germany (+4 GW), the Netherlands (+2.5 GW), France (+1.1 GW) and a surprised Poland (the installed capacity quadrupled in 2019, reaching 784 MW by the end of 2019, and the EU’s incremental photovoltaic capacity reached 131.9 GW, an increase of 14% from last year (the total installed capacity at the end of 2018 was 115.2 GW). As it continues to rise, some security risks are gradually emerging. Increasing concerns for the safety of photovoltaic systems For photovoltaic systems, there are two major...

1.Importance of Inverter Efficiency Improving conversion efficiency is of great importance to PV inverters’ performance. If we assume a 500KW inverter generating for an average of 4 hours per day, when its efficiency rises by 1%, nearly 20 KWH more energy will be produced daily and 7,300 KWH more annually. Therefore, in order to maximize the benefit of customers, it's critical to increase inverter efficiency as much as possible. 2.Factors Affecting the Efficiency of PV Inverters The only measure to improve PV inverter efficiency is to reduce losses that mainly come from power switching tubes such as IGBT and MOSFET, as well as magnetic devices like transformers and inductors. Energy losses caused by IGBT mainly include conducting loss and switching loss, among which the first one is related to the internal resistance of its components and the current that passes through it, while the switching loss is more relevant to the switching frequency of power devices and the DC...