Inverter

Electric power conversion systems – Current conversion – Using semiconductor-type converter

Reexamination Certificate

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Reexamination Certificate

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07031176

ABSTRACT:
In a system for the conversion between DC power and AC power, including a buffercapacitor and a controllable converting arrangement, said conversion is controlled by a power control quantity that in turn depends on a first component assuring a balance between DC power and AC power and a second component indicating a change in energy stored in the buffer capacitor on a predetermined sampling time instant in the cycle of the voltage ripple on the buffer capacitor.

REFERENCES:
patent: 4494180 (1985-01-01), Streater et al.
patent: 5235266 (1993-08-01), Schaffrin
patent: 6525507 (2003-02-01), Ganz
patent: 6678174 (2004-01-01), Suzui et al.

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