This paper reviews the Weldex exhibition held at the NEC in Birmingham in November 2003. Highlights of the show included VirtualArc from ABB, which is able to predict weld conditions using physics of the arc, the hybrid MSG‐laser welding process from Cloos and a new spot weld‐specific...

This paper summarises 1 year of monitoring of a roof-mounted 1-kWp grid-connected system in Warsaw. The system has been in operation since December 2000. The PV array consists of 20 Millennia MST-50 MV modules. Climatic and solar radiation conditions at the site are reviewed, and the performance...

The principle of energy production evaluation of PV systems is explained and parameter definitions are given at first. Then, a new method is proposed to verify detailed system parameters from ordinary, monitored data. Data acquisition system is used for the evaluation of long-term energy...