Enecsys has developed a family of solar PV micro inverters and monitoring systems which it will show at Solar Power International, October 18th-20th, in Dallas, Texas.
According to the Cambridge-based supplier, compared to solar PV installations that use string inverters, micro inverters deliver 5% to 20% greater energy harvest over the system lifetime by applying what it termed maximum power point tracking (MPPT) to each solar module.
"There is no dramatic reduction in system output when a solar module, or part of a module, has its output reduced by shading or build-up of surface debris," said the company.
This is because each solar module and its connected micro inverter act as an independent AC generator that is connected in parallel, and not in series as they would be in a string inverter based system.
Enecsys micro inverters are based on a patented design that eliminates electrolytic capacitors, the most life-limiting component in other inverters, and replaces them with long-life film capacitors.
As a result, Enecsys micro inverters deliver full performance from -40 degrees to +85 degrees C ambient temperature, operate at up to 96% efficiency, and come with a 20-year warranty.
As well as micro inverters that connect to single solar modules, Enecsys will also show Duo models, available in 360W and 480W versions. These support fully distributed MPPT of the two connected solar modules and convert their DC output to grid-compliant AC power.
Enecsys micro inverters are certified to international safety and EMC standards including EN 62109, G83, UL1741, TUV and CE. Country-specific requirements, including VDE V 0126-1: 2006 compliance, are achieved through the use of specific Enecsys installation products.