Improvements in Systems of Electrical Distribution Employing Rectifiers.

摘要

22,261. British Thomson-Houston Co., [General Electric Co.]. Oct. 31. Converting alternating and direct currents; distributing.-Relates to a distribution system in which vapour electric apparatus used in series are employed to rectify an alternating current to supply a constant current or potential circuit. Fig. 1 shows one arrangement, the rectifiers 1, 2, 3 being supplied through transformers 13, 14, 15 the cathode 6 of one being connected to the middle point of the secondary of the next transformer 14. Transformers 9, 10, &c. are provided for use in starting the rectifiers. In a modified arrangement, Fig. 2, a transformer having floating coils is provided, and the translators 32, 33, 34 are arranged between sections of the transformer so as to lessen the voltage difference on each group. A battery 36 may be provided for starting and maintaining the current in each rectifier. In another modified arrangement, separate transformers are used for each phase, and are supplied from an alternator, the field of which is varied by a regulator iu accordance with the load.