DC Power Supply System for Autonomous Objects

The article presents a DC power supply system based on a contactless synchronous generator with combined excitation and an uncontrolled rectifier. One of the possible options for constructing a DC power supply system for autonomous objects is described. In particular, such a power supply system can be used as an on-board power supply system for aircraft. A synchronous generator with combined excitation replaces three-stage synchronous generators, as an electric generator on board aircraft. The working magnetic flux in such a generator is created from two sources of magnetomotive force - a permanent magnet and an excitation winding. The main, as a rule, most of the working magnetic flux is created by permanent magnets, the excitation winding creates an additional, as a rule, smaller part of the flux than provides a change in the total flux and regulation in a certain range of the output voltage of the generator. Scenarios for selecting parameters and controlling a synchronous generator that ensure the stability and controllability of the system are proposed and investigated. The results obtained can be useful in the development of power supply systems for aircraft and autonomous objects.