Abstract
In this letter, an asymmetrical pulsewidth modulation (PWM) scheme is proposed to solve the output voltage unbalance and voltage gain issues of the input-parallel output-series (IPOS) converter when D < 0.5. With the proposed scheme, the natural output voltages balancing and high step-up conversion ratio can be extended when D < 0.5. As a result, combined with the conventional PWM scheme, the duty cycle limitation of the IPOS converter is completely eliminated without any extra components or dedicated control. A 2-kW prototype of the IPOS converter was built and tested to verify the performance of the proposed PWM scheme.
Original language | English |
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Pages (from-to) | 2485-2490 |
Number of pages | 6 |
Journal | IEEE Transactions on Power Electronics |
Volume | 37 |
Issue number | 3 |
DOIs | |
State | Published - 1 Mar 2022 |
Keywords
- Asymmetrical pulsewidth modulation (PWM)
- boost converter
- dual-output
- input-parallel output-series (IPOS) converter
- voltage balancing