Mitsubishi Electric Corp has announced ten models of photovoltaic (PV) modules — five for the European market and five for North America and Asia. The lineup comprises modules with outputs of 210W, 220W, 225W, 230W and 235W. The PV-TJ235GA6 and PV-UJ235GA6 is the represent models of PV module offered in Europe, and for North America/Asia, respectively.
The high-output modules use lead-free solder and incorporate PV cells with four bus bars. Using the new cells in combination with an increased module size achieves a power output of up to 235W per module. Larger output means that fewer modules are needed to build a system, helping to reduce total system cost.
By increasing the number of bus bars from two to four, the internal resistance in each PV cell has been reduced, increasing individual cell output by 3% compared to those used in the company’s previous models. To use four bus bars, however, each bus bar needs to be narrowed so that the cell can collect enough sunlight, which makes it difficult to connect each cell in the interconnecting wire soldering process with automated equipment. Mitsubishi Electric has overcome this difficulty by developing a high-quality graphic sensing technology that increases the accuracy in cell alignment.
– from techon