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Buck-Boost Current-Source Inverters With Diode-Inductor Network

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Keywords
  • Buck–Boost
  • Current-Source Inverters (Csis)
  • Pulsewidth Modulation (Pwm)
Disciplines
  • Design

Abstract

This paper presents a number of novel currentsource inverters (CSIs) with enhanced current buck-boost capability. By adding a unique diode-inductor network between the inverter circuitry and current-boost elements, the proposed buck-boost CSIs demonstrate a doubling of current-boost capability, as compared with other recently reported buck-boost CSIs. For controlling the proposed CSIs, two modulation schemes are designed for achieving either optimized harmonic performance or minimized commutation count without influencing the inverter current buck-boost gain. These theoretical findings were eventually verified experimentally using a number of constructed laboratory prototypes.

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