Abstract
In this paper, a high step up converter consisting of an integrated quadratic-boost converter and a voltage doubler is proposed. The integration of the quadratic-boost converter makes the system easier to lift up its voltage gain through slightly increasing the duty ratio of the single switch. The voltage doubler further increases the voltage gain of the system as the turn ratio rises. The voltage stresses on the switch and the diodes are decreased for such cascaded topology. Different operation modes are analyzed and mathematical analysis of the converter is presented in detail. The leakage inductance contributes to realizing zero current switching of the diodes in the second boost stage and the doubler and the energy can be recycled to the load. A 38-W prototype is built to work as a vehicle LED driver. Experiments are conducted to verify the advantages of the proposed converter and the efficiency is 90% at the nominal operating point.
| Original language | English |
|---|---|
| Article number | 8424225 |
| Pages (from-to) | 4387-4397 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 66 |
| Issue number | 6 |
| DOIs | |
| State | Published - Jun 2019 |
| Externally published | Yes |
Keywords
- High voltage gain
- integrated quadratic-boost converter
- low stresses
- single switch
- voltage doubler
- zero current switching (ZCS)
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