ACTIVE FILTER CONTROL DEVICE
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Abstract
A harmonic component extraction unit obtains a command value of compensating current from a harmonic component of the load current. A difference current generation unit obtains a deviation between the compensating current and a value obtained by leading a phase of the command value by a predetermined phase difference. A current controller generates a control signal based on output of the difference current generation unit. A driving signal generation circuit generates, based on the control signal, a driving signal driving a parallel active filter.
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Citations
12 Claims
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1-5. -5. (canceled)
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6. An active filter control device that controls a parallel active filter connected to an AC power supply through an interconnection reactor and outputting compensating current, said AC power supply supplying load current to a load, said active filter control device comprising:
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a harmonic component extraction unit obtaining a command value of said compensating current from a harmonic component of said load current; a difference current generation unit obtaining a deviation between said compensating current and a value obtained by leading a phase of said command value by a predetermined phase difference; a current controller generating a control signal based on output of said difference current generation unit; and a driving signal generation circuit generating, based on said control signal, a driving signal driving said parallel active filter. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification