| 释义 |
ˌovercomˈpounded, ppl. a. Electr. Engin.
[f. over- 24 b + compound v. + -ed1.]
Of a dynamo: compounded in such a way that the voltage increases with load.
1892S. P. Thompson Dynamo-Electr. Machinery (ed. 4) xi. 295 For such work as supplying current to an electric tramway, an over-compounded dynamo with laminated field-magnets is the best generator. 1927A. E. Clayton Performance & Design D.C. Machines viii. 181 With an over-compounded machine the value of the current in the shunt winding actually increases with increasing load. 1971L. T. Agger Introd. Electr. xvi. 299 If..the load has to be supplied over a considerable distance, the rising characteristic of the over-compounded generator..may be desirable.
So overˈcompounding vbl. n.; also (as a back-formation) overˈcompound v. trans.
1892S. P. Thompson Dynamo-Electr. Machinery (ed. 4) xi. 295 The same process suits for over-compounding, the excitation at full load being raised until the volts at terminals rise to the higher number of volts that will allow for the drop in the leads. 1914A. Gray Princ. & Pract. Electr. Engin. xiii. 75 For railway service the generators are overcompounded so as to maintain the trolley voltage at some distance from the power house. 1937H. E. Stafford Troubles of Electr. Equipment iii. 46 To over⁓compound a generator not provided with diverters, the only permanent way is to increase the strength of the series and interpole fields. 1966J. Meisel Princ. Electromechanical-Energy Conversion ix. 394 Making Gasωor greater than Ra + Rs, or overcompounding the machine, gives an increasing output voltage with increasing load current. Ibid., By a slight overcompounding the droop can be taken into account and the output voltage at no load..can be made equal to the output voltage at full-load current. |