Output power factor control of pulse-width modulated inverter

Details Output power factor control of pulse-width modulated inverter Output power factor control of pulse-width modulated inverter

2004-06-21

2010-02-09

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

Reexamination Certificate

active

07660139

ABSTRACT:
An inverter operable to supply high power factor electrical power to an AC load including an AC power grid includes a DC bus and a DC to AC converter section of the full bridge type. The inverter further includes a voltage sensor configured to produce an instantaneous output voltage signal representing instantaneous output voltage of the inverter, a rectification circuit configured to produce a rectified output voltage signal, a power signal generator, an output current sensor configured for sensing an output current of the inverter, a rectification circuit configured to produce the rectified output current signal, a sign circuit for producing a signal representing the sign of the output voltage and a control apparatus. The control apparatus includes a scaled rectified voltage signal generator, a pulse width modulation (PWM) signal generator configured to produce a pulse width modulation signal in response to the scaled rectified voltage signal and the rectified output current signal and a switching leg controller circuit configured to control the full bridge switches.

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