Switch inductor generators for special vehicles

Abstract

BACKGROUND: This paper discusses switch inductor generators for special vehicles. A generator is the main source of current that provides consumers with power in all operating modes of the engine, as well as charges an electrical battery. The main requirements that are imposed on generators are defined, such as high reliability and durability, corresponding to the service life of an internal combustion engine, as well as manufacturability, low cost and simple maintenance. It is shown that these requirements are most satisfied by switch inductor generators.

AIMS: Study of switch inductor generators in order to determine their main characteristics and parameters.

METHODS: The calculation of the idling characteristic is based on the circuit equivalent to the magnetic circuit of the inductor machine. The Blondel diagram is used to calculate the current-velocity characteristic.

RESULTS: A review and analysis of switch inductor generators of various design has been carried out. In recent years, anisotropic magnets have been used to increase the power of the generator and reduce its dimensions and weight, which, basically, are mortised to a rotor. The main characteristics and parameters of inductor generators are considered. A characteristic feature of an inductor machine, in comparison with conventional synchronous alternating current machines, is that there is a decrease in the electromotive force generated by the generator at high degrees of saturation, therefore, in inductor machines, the saturation level should be lower than in conventional synchronous ones.

CONCLUSIONS: In this paper, a switch inductor generator with a nominal voltage of 14 V and a maximal recoil current of 72 A was calculated according to a well-known method. As a result of the calculation, the main design parameters of the machine were determined, the calculation of the magnetic circuit of the electric machine was carried out and on the basis of which the idling characteristic was constructed. The calculation of the current-velocity characteristic was carried out using the Blondel diagram.

Keywords

switch inductor generator / permanent magnets / magnetic permeability / air gap / current-velocity characteristic

References

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