Optimisation of parametres of the jet frequency commutators

A.Voronin,
 
P.Kulakov,
 
V.Prikhodthenko
 

Electrical Contacts and Electrodes - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #10
http://www.materials.kiev.ua/article/459

Abstract

A task is decided on optimization of parameters of stream frequency commutators. An optimization task was taken to the task of Kuhn-Takker. As an objective function the cost indexes of pin materials were here used, and limitations the terms of thermal and electrodynamic firmness of liquid-metal streams served as. For the decision of task of the constrained optimization was applied one of methods of direct search is a method of complexes. As a result of the calculations produced on computer for the streams of different length and it was set at the different values of burn-time of stream, that a minimum of by volume expense of liquid metal is arrived at such correlation of diameter of stream and speed of metal in it, which equality of possible closenesses of current of thermal and electrodynamic firmness is at. It is shown that application as an intermediate working body of gallium or eutecticum alloy Ga-In-Sn, allows to get considerably the large values of closeness of current within the limits of thermal and electrodynamic firmness, as compared to mercury or eutecticum alloy Na-K.


FREQUENCY COMMUTATORS, LIQUID-METAL CONTACT, OPTIMIZATION OF PARAMETERS, PROBLEM OF NONLINEAR PROGRAMMING, TERMS OF THERMAL AND ELECTRODYNAMIC FIRMNESS OF LI