Research of Space Power System MPPT Topology and Algorithm

To meet the growing energy demand of the new spacecraft such as high resolution and radar remote sensing satellite and deep space probes, a incremental conductance peak power tracking method based on S3MPR circuit is presented in this paper. The shortcomings of traditional MPPT topology that low mass and power ratio, low efficiency are overcome. The incremental conductance method can be used to reduce the oscillation near the maximum power point. The principle and control processes of the incremental conductance method are introduced. A co-simulation platform and semi-physical experimental platform is built to validate the circuit and control method. The results show, the incremental conductance peak power tracking method based on S3MPR circuit can achieve effective tracking of the maximum power point of the solar array, and has good tracking efficiency, the simulation and experiment platform are reasonable and effective.