Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Patent
1980-04-21
1981-08-04
Shoop, William M.
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
363 37, H02P 1326
Patent
active
042825709
ABSTRACT:
In a method and apparatus for controlling an output current of a controlled rectifier connected to an AC power supply, by firing angle control of the controlled rectifier in accordance with the result of comparison of a value corresponding to the rectifier output current with a predetermined reference value, an average value of a detected rectifier output current over a period having a length equal to an integer multiple of the average period of the firing angle control is calculated, and a signal for firing the controlled rectifier is produced at an angle determined in accordance with comparison of the calculated average value with the reference value.
REFERENCES:
patent: 3582755 (1971-06-01), Liss et al.
patent: 3748556 (1973-07-01), Gillett
patent: 3883791 (1975-05-01), Zelina et al.
patent: 3939387 (1976-02-01), Maeda
patent: 4066938 (1978-01-01), Turnbull
patent: 4210956 (1980-07-01), Watanabe
IEEE Transactions on IECI vol. IECI-26, No. 3, Aug. 1979, p. 161, Analog-to-Digital Conversion Based on a Voltage-to-Frequency Converter.
Kudor Toshiaki
Kurosawa Ryoichi
Shoop William M.
Tokyo Shibaura Denki Kabushiki Kaisha
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