One-kVA, Three-Phase dc-ac Inverter with Digital Control |
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Authors: | Knight M.A. Torkildsen R.A. |
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Affiliation: | Naval Air Systems Command Washington, D. C.; |
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Abstract: | This paper describes a method of applying digital techniques to the control of a 1-kVA three-phase dc-ac inverter to generate a sinusoidal 400-Hz output, using high-frequency bridge-chopper techniques. The model which was constructed used predominantly off-theshelf digital microcircuits and resulted in a device with an overall efficiency of 85 percent, in a 0.52 cubic-foot package which weighed 19.5 lbs. Sinusoidal output with less than 2 percent harmonic distortion at 115 volts line to neutral was obtained with 28 volts dc input. |
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