Compact power conversion device with continuous output regulation range

• Main Authors: Delos Ayllon Julia, Alarcon-Cot Eduardo-Jose, Lopez Toni, Hendrix Machiel Antonius Martinus
• Format: Patent
• Language: English
• Published: 31.10.2017
• 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; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERATION

The current invention relates to a power conversion device (10), for supplying a load (11) with a PWM signal through an inductive output filter (105). The power conversion device (10) comprises a power conversion module (101) supplied by a DC input voltage (Vin) and is configured for providing a plurality of output signals (PWM1, . . . , PWMn) having a level amplitude that is a fraction of the input voltage (Vin) level. Each output signal is floating with a bias component equally split in a plurality of steps ranging from a determined lowest fraction level amplitude to a determined highest fraction level amplitude. The power conversion device (10) further comprises a multiplexer (103) receiving as a plurality of inputs the plurality of output signals (PWM1, . . . , PWMn). The multiplexer is configured for outputting one output signal (PWMx) selected from the plurality of inputs, whereby the output signal (PWMx) of the multiplexer (103) is connected to the output filter (105).