CONTROL DEVICE OF POWER CONVERTER

• Main Authors: TANAKA, Miwako, NAGATO, Shuichi, IWATA, Akihiko
• Format: Patent
• Language: English; French; German
• Published: 23.12.2020
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

A subtracting unit (30) calculates a voltage deviation (U) of an output voltage (Vout) of a DC-to-DC converter (7) from a target voltage (Vf). A feedback (FB) control variable calculator (40) calculates a FB control variable (Cfb) in each control cycle. In a control cycle in which a crossing of the output voltage (Vout) and the target voltage (Vf) is detected by a FF control determination unit (10), a feedforward (FF) control variable calculator (20) calculates a FF control variable (Cff) so that a change in the output voltage (Vout) is prevented. A switching control signal generator (60) generates a control signal for the DC-to-DC converter (7) for controlling the output voltage (Vout), according to a summation of the FF control variable (Cff) and the FB control variable (Cfb).