Abstract: Methods, apparatus and systems provide a rotary three-phase to two-phase converter. The converter may receive three phase electrical power in windings of a three phase induction motor. The motor may have a rotor and induction windings with three connections in parallel in a delta wiring configuration. Two of the connectors may be connected in parallel to a two phase load. In the various embodiments, switches may be controlled to optionally disconnect the load from the rotary converter. In various embodiments, the induction motor rotor may be free rotating, coupled to fly wheel or mechanically connected to a mechanical load.

Abstract: Power output of a power generation system is controlled by measuring the output voltage of the system, dividing the measured voltage value into a target power value, then controlling the current provided by the generation system to the calculated value. In some embodiments the power generation system is connected to a grid.

Abstract: A direct current to pulse amplitude modulated (“PAM”) current converter, denominated a “PAMCC”, is connected to an individual source of direct current. The PAMCC receives direct current and provides pulse amplitude modulated current at its three output terminals, wherein the current of each terminal is one hundred twenty degrees out of phase with the other two terminals. The pulses are produced at a high frequency relative to the signal modulated on a sequence of pulses. The signal modulated onto a sequence of pulses may represent portions of a lower frequency sine wave or other lower frequency waveform, including DC. When each phased output is connected in parallel with the outputs of similar PAMCCs an array of PAMCCs is formed, wherein each voltage phased output pulse is out of phase with respect to a corresponding current output pulse of the other PAMCCs.