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Title: Ripple control systems

Abstract: A three phase ripple control system for feeding a control signal onto each phase line employs an injection transformer having a primary winding and three secondary windings. A control signal generator is connected in circuit with the primary winding and serves to provide a signal thereto. A respective inductor is connected in series in each phase line and is connected in parallel with a respective one of the secondary windings. The inductors have a value of inductance arranged such that their impedance at line frequency is substantially smaller than the magnetizing impedance of the transformer. The secondary winding thereby introduce a common control signal onto each of the three phase lines.


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Inventors: Biglin, Timothy J. (Bath, GB)

Application Number: 819225
Filing Date: 1977-07-26
Publication_date: 1980-03-18
Assignee: The Horstmann Gear Company Limited (Avon, GB2)
Primary Class(es): 307/3 307/7, 307/27, 340/310.07
Other Classes:
US Patent Ref:
2300940Nov, 1942Lenehan340/310.
4017845Apr, 1977Kilian340/310.

Other Refs:
Primary Examiner: Hix, L. T.
Assistant Examiner: Schreyer, S. D.
Attorney: Groff, Jr.; Emory L.