Sigma-delta modulation inverter with programmable waveform...

Details Sigma-delta modulation inverter with programmable waveform... Sigma-delta modulation inverter with programmable waveform...

2005-08-30

2005-08-30

Laxton, Gary L (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

Reexamination Certificate

active

06937489

ABSTRACT:
An inverter for converting a DC input voltage into an AC output voltage using the sigma-delta modulation (SDM) is provided which includes: a SDM controller for producing a modulated output voltage signal according to a reference voltage signal, a driving circuit electrically connected to the SDM controller for producing a driving signal according to the modulated output voltage signal, and a power inversion stage circuit electrically connected to the driving circuit for producing the AC output voltage according to the driving signal. A controller for producing a modulated output voltage signal according to a reference voltage signal is also provided which includes: an integrator circuit, a sample-and-hold circuit electrically connected to the integrator circuit, and a quantizer circuit electrically connected to the sample-and-hold circuit and electrically connected to an input terminal of the integrator circuit through an output terminal thereof.

REFERENCES:
patent: 5099410 (1992-03-01), Divan
patent: 6717392 (2004-04-01), Pearson

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