An elementary book on electricity and magnetism and their applications . Fig. 302. — Motor-generator converter. The motor on the right is a motor operating on 2300 volts. The d-c. generator on the leftfurnishes 275 kw. at 550 Fig. 303. — Synchronous converter. Alternating current received at theright and direct current delivered at the left. POWER STATIONS AND DISTRIBUTION OF POWER 427 288. A comparison of the synchronous converter and motorgenerator. If we compare these two types of machines, wefind that in the large sizes the synchronous converter is moreefficien
An elementary book on electricity and magnetism and their applications . Fig. 302. — Motor-generator converter. The motor on the right is a motor operating on 2300 volts. The d-c. generator on the leftfurnishes 275 kw. at 550 Fig. 303. — Synchronous converter. Alternating current received at theright and direct current delivered at the left. POWER STATIONS AND DISTRIBUTION OF POWER 427 288. A comparison of the synchronous converter and motorgenerator. If we compare these two types of machines, wefind that in the large sizes the synchronous converter is moreefficient, because there is but one field and but one armatureand so the various losses are much smaller. Then, too, thesynchronous converter weighs less and occupies less spaceand costs less, provided that no large amount of auxiliaryapparatus is required to control the voltage. On the otherhand, the synchronous converter in smaller sizes is hard tostart and is unstable on lines where sudden changes in load orvoltage occur. In fact, direct voltage cannot be regulatedseparately from the power factor and it is impossible to improvethe power factor or the regulation of the line without greatloss in capacity. It should be noted, however, that the capacity
Size: 1686px × 1481px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectmagnetism, bookyear19
