Enecsys Limited debuted the Enecsys Duo micro-inverter, a 360W high power density micro-inverter. Designated the SMI-D360W-72, it is designed to be better than string inverters for PV panel set up, shading, and wireless reporting. The DC power generated by the two modules is converted into a single, grid-compliant AC output.
March 7, 2011 — Enecsys Limited, a solar photovoltaic (PV) micro-inverter company, debuted the Enecsys Duo micro-inverter, a 360W high power density micro-inverter with dimensions of 262 x 160 x 35mm. Designated the SMI-D360W-72, it is designed to reduce system costs while supporting fully independent power point tracking of two connected photovoltaic modules. The DC power generated by the two modules is converted into a single, grid-compliant AC output.
System layout and planning is simplified and installation time and costs are reduced because only half the number of micro-inverters is needed for each system. Solar PV systems using the Enecsys Duo will have comparable capital costs to those using string inverters, but deliver 5 to 20% more energy, depending on installation configuration and operating environment. When adopting the Enecsys micro-inverter solar PV architecture, systems do not suffer from dramatic reductions in output when modules are mismatched or when one PV module, or part of a module, suffers from lower output due to shading. Solar modules connected to the Enecsys Duo do not need to be matched or be located on the same plane. They can be oriented in different directions to maximize usable roof space without impacting overall system performance.
The Enecsys Duo micro-inverter has 95% peak efficiency and 93% Euro efficiency, performing in -40C to +85C. As with other Enecsys micro-inverters, electrolytic capacitors and other low-reliability components have been eliminated to ensure a life expectancy of greater than 25 years. Reliability has been verified using highly accelerated life testing (HALT), highly accelerated stress screening (HASS) and accelerated life tests to IEC61215, the same methodology used to test solar PV modules.
The Enecsys Monitoring System provides on-line and real-time information about the total energy generated, individual solar module performance and the historical pattern of power generation. The Enecsys micro-inverter is equipped with a robust, built-in wireless system that connects to the Internet via a Gateway.
All Enecsys micro-inverters are designed for both North American (60Hz) and European (50Hz) electricity grid systems. The relevant agency approvals for the Enecsys Duo micro-inverter are expected during March 2011, at which time the products will be available in Europe.