| 摘要 |
Three-phase power-conversion wherein the frequency output voltage is independent of the frequency of input voltage. One of three input terminals in a load powered by the apparatus is directly grounded. Each of the other two input terminals is supplied a sinusoidal voltage artifact from an appropriate transform circuit which is driven by a microprocessor, with one of these artifacts having a form 1.73.alpha.SinA, and the other having the form of 1.73.alpha.Sin(A + 60.degree.), where .alpha. is the nominal amplitude of the source voltage and the Expressions A and (A + 60.degree.) are the respective phase angles. Operation of the microprocessor controls outputfrequency.
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