Особенности проектирования малогабаритной автономной системы генерирования постоянного тока

Abstract

The requirements posed to standalone compact DC power-generating systems are presented, and the main specific features of such systems are considered. A few concepts of constructing such systems are considered, including those on the basis of an induction generator, a synchronous generator with combined excitation, and a permanent-magnet synchronous generator. An analysis of the considered systems was carried out, which made it possible to reveal advantages and drawbacks of each of them, and a concept involving the use of a permanent-magnet synchronous generator with an external rotor and an increased voltage level has been selected. A DC—DC converter is one of the control unit key constituent parts. Owing to this converter, it becomes possible to adjust the voltage in a wide generator frequency variation range and to obtain a significantly lower output voltage ripple. For determining the specific features of modeling a standalone compact power-generating system using the ANSYS software package, two generator design versions, one with an internal and the other with an external rotor, were considered. Based on the simulation results, the performance quality of each generator design has been estimated, and the generating system power output has been confirmed.