Control method for cycloconverter and control apparatus therefor

Details Control method for cycloconverter and control apparatus therefor Control method for cycloconverter and control apparatus therefor

1985-12-27

1987-06-02

Salce, Patrick R.

Electric power conversion systems

Cascaded or combined, diverse conversions in which the...

Combined phase and frequency conversion

363161, 323207, H02M 000

Patent

active

046708260

ABSTRACT:
A control system for a cycloconverter of the circulating current type produces an ac current of a variable frequency. The cycloconverter is configured to connect a power factor compensating capacitor at its receiving-end, thus to control a lagging reactive power due to a circulating current flowing in the cycloconverter so as to cancel a leading reactive power due to the power factor compensating capacitor. Such a control is carried out under the condition of an operation below the rated load. In contrast, under the condition of an operation above the rated load, a control is effected so that the circulating current flowing in the cycloconverter is substantially kept constant.

REFERENCES:
patent: 3609509 (1971-09-01), Lafuze
patent: 3959719 (1976-05-01), Espelage
patent: 3959720 (1976-05-01), Bose et al.
patent: 4418380 (1983-11-01), Tanaka et al.
patent: 4529925 (1985-07-01), Tanaka et al.
patent: 4570214 (1986-02-01), Tanaka

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