초록 ▼

Apparatus for converting relatively high, variable frequency, variable amplitude electrical power into substantially constant amplitude and substantially constant, relatively lower frequency power of a preselected waveform. The power source signal is divided into a number of varying amplitude, same

Apparatus for converting relatively high, variable frequency, variable amplitude electrical power into substantially constant amplitude and substantially constant, relatively lower frequency power of a preselected waveform. The power source signal is divided into a number of varying amplitude, same frequency segments. The segment having the amplitude nearest that of the preselected waveform is transmitted by a switching network during each of many time periods. The switching network is preferably controlled by a microprocessor that senses the amplitudes of the segments and compares them to the desired waveform amplitude as a function of time. The microprocessor provides control signals to the switching network in response to the comparison. Because the low frequency output signal is constructed with reference to a memorized signal, the output signal is particularly stable in spite of variations in the power source signal. The power source may be a mechanical electrical generator driven by a high speed machine, such as a turbine, producing excess usable power. The generated electricity may be divided into segments by means of a number of taps on a winding of the generator or by a transformer having a multiply tapped secondary winding. By use of the invention, usable electrical power may be co-generated from an energy source conserving otherwise wasted energy.

대표청구항 ▼

Apparatus for deriving an alternating current electrical output signal having a preselected waveform and frequency from a variable, higher frequency alternating current electrical input signal, said apparatus comprising: input terminals for receiving an input signal and output terminals for connecti

Apparatus for deriving an alternating current electrical output signal having a preselected waveform and frequency from a variable, higher frequency alternating current electrical input signal, said apparatus comprising: input terminals for receiving an input signal and output terminals for connection to an electrical load; dividing means connected to said input terminals for receiving and dividing an alternating current input signal having a first frequency into a plurality of continuous input signal segments, each segment having a different amplitude, said dividing means comprising a mechanically driven alternating current generator including a winding for extracting said input signal from said generator, said winding having first and second ends, and a plurality of individual electrical connections to said winding intermediate said first and second ends for extracting sasid input signal segments from said generator; switching means receiving said input signal segments from said dividing means for selectively transmitting to said output terminals different ones of said input signal segments; and control means connected to said switching means for controlling over time the selective transmission by said switching means of said input signal segments to produce at said output terminals an alternating current output signal having a preselected waveform of a second frequency lower than said first frequency.