From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Improving the electrical charging system, battery life, and dynamo performance.
| Identifier | WestWitteringFiles\Q\2April1927-June1927\ 164 | |
| Date | 3rd June 1927 guessed | |
| -4- Contd. In this connection we have to prove that the commutation and brush conditions in these circumstances of running are satisfactory. We have little doubt that in these circumstances of enormously reduced output, commutation will be satisfactory, though we agree it is necessary to prove this owing to the change in the internal magnetic functioning of the machine. As previously stated we are of the opinion that from many points of view an automatic charge controlling device of this nature is very desirable. The voltage at which the system can operate will be definitely limited. The rate of charge to the battery when fully charged will be definitely limited. There seems little doubt that such a scheme will largely overcome the fundamental incorrectness of the utilisation of generators, the voltage control of which depends upon the satisfactory connection to a voltage stabilising device in the form of a battery. There is with such a system always some risk of circumstances arising through one cause or another leading to the possibility of failure of dynamo or other apparatus. It is this risk which we consider can be minimised by an auto switch of the type with which we are experimenting - The result would be :- (1) Better running of dynamo with fewer complaints. (2) Still better life of battery. (3) Fewer complaints of undercharging on the one hand and overcharging on the other, either in time or rate of charge, in either case. Contd. | ||