Apparatus for controlling an inverter main circuit

Details Apparatus for controlling an inverter main circuit Apparatus for controlling an inverter main circuit

1981-05-29

1982-10-26

Pellinen, A. D.

Electric power conversion systems

Current conversion

Using semiconductor-type converter

318811, H02M 7537

Patent

active

043565441

ABSTRACT:
An apparatus for controlling an inverter main circuit has a memory circuit for storing digital control signals which correspond to 180.degree.
portions of output voltage waveforms of the inverter main circuit, where n is an integer. The memory circuit has a plurality of memory areas. One of the memory areas is designated by a digital signal supplied from a speed setting circuit. And the addresses of any memory area thus designated are designated by output signals of an up-down counter, one after another in ascending order of their serial numbers (forward direction) and in descending order of their serial numbers (backward direction). As they are designated, the memory regions corresponding to addresses supplies control signals. Every time the addressing direction is changed, the up-down counter generates a clock signal to a converter circuit which has 2n output terminals. In response to the clock signal supplied from the up-down counter, the converter circuit supplies signals to a waveform synthesizer circuit, one after another via the 2n output terminals. According to the signals from the converter circuit the waveform synthesizer circuit supplies to the inverter main circuit the control data in a predetermined order.

REFERENCES:
patent: 4290108 (1981-09-01), Woehrle et al.
patent: 4312031 (1982-01-01), Kudor
Humblet et al., "A Realisation Example of a Microprocessor-Driven P.W.M. Transistor Inverter," 2nd International Conference on Electrical-Speed Drives, London, England, 25-27 Sep. 1979, pp. 151-156, S03650047.

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