Configuring and Normalizing Performance Index for Soiling, Bifacial Gain, and Reference-Based Applications.

Module-Module Systems

Systems with two or more RDE300i units can be used for measuring soiling losses or bifacial gain. Follower modules are compared to a Leader module which serves as a reference for the RDE300i Leader to calculate a Performance Index for each module. For example, the power output of a soiled Follower could be compared with the output of a clean Leader. 

We designate these system types as "Module-Module".

Module-Cell Systems

Systems with one RDE00i unit and one (monofacial) or three (bifacial) RC22 reference cells can be used for measuring soiling or degradation losses. The Leader module is compared to the reference cell(s) which serves as a reference for the RDE300i Leader to calculate a Performance Index. The integration of a Mars sensor (Module-Cell-Optical) or Cell Wash unit (Module-Cell-Washer) can eliminate or automate the regular washing of your RC22 reference cells.

Related Documents

• User Guide: For instructions on installing and configuring RDE300i, see document 880093, RDE300i User Guide.
• Soiling Products Ordering Guide: For additional information on RDE300i system configurations for soiling measurement, including use of multiple RDE300i systems and/or combinations of RDE300i with RC22, Mars, or Cell Wash, see document 880100, Soiling Measurement Products Ordering Guide.