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Static Inversion Based on Duty Cycle Modulation

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2 Author(s)
Kruger, Bodo ; Electronic Systems and Products Division Martin Company Baltimore 3, Maryland ; Hancock, Donald J.

A solid-state switching static alternator, based on the duty cycle modulation principle, has been developed. High-speed transient response and a 0 to 100% output voltage regulation range are accomplished with simple circuitry that utilizes few components. Significant problems, such as transformer losses and reverse d-c source current, are analyzed, and a derivation of design procedures for the output filter is made, taking the effect of the load impedance into account. A bread-board model of the duty cycle modulation alternator (DCMA), which operates at 71% efficiency at 250-watt output power, has been built and tested.

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Aerospace, IEEE Transactions on  (Volume:1 ,  Issue: 2 )