Abstract
A novel beta-quasi-Z-source (β-qZS) converter is proposed for an isolated dc-dc converter with the buck (step-down) and boost (step-up) functions. The β-qZS isolated dc-dc converter addresses the common challenges such as components stresses, reliability, suppression of switch voltage overshoot, size, and power derating in the existing impedance source-based isolated dc-dc converter applications. In addition, the proposed topology dealt with operating duty cycle constraint and loss of duty cycle phenomenon in the Z/qZS galvanically isolated dc-dc converters. This article describes the configuration and provides the principle of operation for the proposed β-qZS converter topology. A laboratory prototype is developed, and the experimental results satisfy the theoretical analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 12784-12794 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 69 |
| Issue number | 12 |
| DOIs | |
| State | Published - 1 Dec 2022 |
Keywords
- Buck-boost
- dc-dc converter
- galvanic isolation
- impedance source converter (ISC)
- quasi-z-source (qZS) converter
- reliability