Abstract
By applying two diode-capacitor voltage multipliers (VMs) to the conventional coupled-inductor boost converter, a novel non-isolated DC-DC converter is obtained, which is suitable for renewable generation systems. The proposed converter has the following features: a large DC conversion ratio with moderate duty cycle, recycling leakage inductance energy by a VM and clamping low voltage on the switch, and thus using low voltage rating switch with low on-resistance to minimize conduction losses. The derivation of the proposed converter as well as the DC steady-state analysis including calculations of the DC gain, voltages stress and conduction losses are presented in detail. A comparison with available converters of similar structures demonstrates the superiorities of the proposed converter. A converter prototype with a 25 V input, 400 V output, 16 times of the voltage step-up gain at the nominal duty cycle 0.5 is designed and built up. Experimental results are in accordance with simulations. The converter achieves 94.1% power conversion efficiency at the nominal output of 200W. © 2018 IEEE.
| Original language | English |
|---|---|
| Title of host publication | 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
| Publisher | IEEE |
| Pages | 2178-2185 |
| ISBN (Print) | 9781479973118 |
| DOIs | |
| Publication status | Published - 3 Dec 2018 |
| Externally published | Yes |
| Event | 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 - Portland, United States Duration: 23 Sept 2018 → 27 Sept 2018 https://ieeexplore.ieee.org/xpl/conhome/8537478/proceeding |
Publication series
| Name | 2018 IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
|---|
Conference
| Conference | 10th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2018 |
|---|---|
| Place | United States |
| City | Portland |
| Period | 23/09/18 → 27/09/18 |
| Internet address |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].Research Keywords
- Coupled inductor
- Diode-capacitor voltage multiplier
- Large DC gain
- Low voltage stress
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