Inverter
AssigneeKoninklijke Philips Electronics N.V.
InventorsAndrew Kotsopoulos, Machiel Antonius Martinus Hendrix, Jorge Luiz Duarte
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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.
Claims4
System for the conversion between direct current (DC) power and alternating current (AC) power comprising a DC link including a buffercapacitor and a controllable converting arrangement for conversion of between AC and DC power in tandem, whereby the controllable converting arrangement is adapted to effect said conversion between the AC and DC power under the control of a power control quantity that is supplied to a power control input thereof, characterized in that said power control quantity in addition to a component which assures a DC-AC power balance between the DC and AC power also comprises a predictive power control component which is indicative of a change in energy that is stored in the buffer capacitor on a sampling time instant in the cycle of the double frequency voltage ripple component on the buffer capacitor compared with a predetermined amount of energy.
Dependencies are inferred from the claim text.