Controlling apparatus of a power converter of single-phase...

Details Controlling apparatus of a power converter of single-phase... Controlling apparatus of a power converter of single-phase...

2007-02-14

2010-11-16

Riley, Shawn (Department: 2838)

Electrical transmission or interconnection systems

Switching systems

Condition responsive

C323S906000

Reexamination Certificate

active

07834485

ABSTRACT:
A control apparatus of a single-phase power converter for a photovoltaic power generation system is disclosed, including a POS MPPT controller for calculating a rating current by applying a POS MPPT control method to an output current detected through a current transformer of a single-phase AC filter, a bandpass filter for filtering only signals of a low-frequency band from a load, a single-phase reference current generator for producing a reference current by matching a phase of the current from the POS MPPT controller to a phase from the bandpass filter, a single-phase current subtractor for subtracting an output current of a current transformer from the reference current calculated by the single-phase reference current generator to thereby calculate a difference current between the output current of the current transformer and the reference current, a PI controller for outputting a control signal, corresponding to the difference current from the single-phase current subtractor, to a PWM signal generator, and the PWM signal generator for generating a PWM phase control signal corresponding to the control signal from the PI controller.

REFERENCES:
patent: 4494180 (1985-01-01), Streater et al.
patent: 6914418 (2005-07-01), Sung
patent: 2001-75662 (2001-03-01), None
patent: 2006-39634 (2006-02-01), None
patent: 10-2004-0058151 (2004-07-01), None
English language Abstract of JP 2001-75662.
English language Abstract of JP 2006-39634.
English language Abstract of KR 10-2004-0058151.

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