The new 875 and 1000 kilowatt (kW) central inverters reduce overall system cost and have even higher total efficiency with one of the most compact and easy-to-maintain designs on the market. The operating temperature and altitude rating have both been extended and the modular direct current (DC) input design provides greater flexibility for system integrators.
The new higher efficiency value of the new ABB central inverter is the result of systematic and continuous R&D efforts. It has a 98.8% maximum efficiency with improved efficiency at partial loads to provide a Euro efficiency rating of 98.6%. This, together with a very low auxiliary power consumption of only 700 watts for the new sizes at nominal power, results in an inverter with a very high total efficiency.
A 45% higher power density compared to earlier ABB central inverters makes this one of the most compact inverters on the market by footprint and volume per kW. This reduces installation and container space and lowers transportation costs. The larger inverter power rating also brings considerable savings on the medium-voltage side by allowing larger transformers to be used.
The new 875 and 1000 kW ABB central inverters offer a wider operational temperature range, up to 50°C at nominal power, and up to 55°C with power derating. This makes the product very suitable for hot climate conditions. At lower temperatures, the central inverter provides up to a 20% power overloading capability, up to a maximum power output of 1050 kW and 1200 kW at 25°C for 875 kW and 1000 kW inverters, respectively.
The modular DC input section provides system integrators with a flexible approach. This is especially helpful when considering the DC cable type and the number of junction boxes needed. The 1000 kW central inverter is available as standard with eight fused busbar inputs and this can be extended up to 16 inputs. Additionally, the DC input section can be provided with integrated DC current measurement per input.
As a new feature, PVS800 series inverters are also now able to support grid stability even at night by providing reactive power with the DC input disconnected.
The ABB central inverter series, rated from 100 to 1000 kW, is designed for multi-megawatt photovoltaic (PV) power plants as well as large PV installations in commercial and industrial buildings. With the ABB central inverter’s certificates and advanced and flexible grid support functions, it is possible to meet all applicable network connection requirements, regardless of where the project is located. To help meet bankability requirements and secure the highest return on investment, ABB supports its customers with a dedicated global service network providing a complete range of life cycle services in more than 60 countries.
ABB (abb.com) is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 145,000 people.
The new central inverter has high total efficiency with one of the most compact and easy-to-maintain designs on the market.