Design of peak and charge current-mode control for parallel module solar array regulator system

In general, the current mode controller is used to share the current in the parallel operation of a power stage. However, the parallel operation of the solar array regulator system (SAR) should be carefully designed because of the nonlinear characteristic solar array (SA), such as a negative dynamic resistance (r
s
) and a SA V-I curve. In the post works, the detailed analysis of stability and dynamics of the SAR system employing current mode control has been not carried out. For these works, the SAR system employing current mode control was analyzed and compared using both large and small signal approaches. From the results of analysis, the stability problems and design issues of the SAR using current mode control for parallel operation were investigated. Finally, the considered problems and issues were tested for the verification through experiments.