Back to Search
Start Over
Duty phase shift technique for extended-duty-ratio boost converter for reducing device voltage stress over wider operating range
- Source :
- 2018 IEEE Applied Power Electronics Conference and Exposition (APEC).
- Publication Year :
- 2018
- Publisher :
- IEEE, 2018.
-
Abstract
- This paper proposes a modified duty phase shift technique for an M-phase extended-duty-ratio (EDR) boost converter to facilitate the inherent current sharing property and reduced voltage stress on the switching devices of the EDR converter over wider operating region. With conventional phase shift of (360/M)° among the operating phases, a reduced voltage stress and inherent current share between the interleaved boost phases is only possible for the operating region of duty ratio given by (M − 1)/M ≤ D ≤ 1, with a minimum gain of M2. However, for a wide range of input-output application with the need of extended range of voltage conversion gain, the converter will operate over broader duty ratio range. With the proposed duty phase shift technique, the advantages of EDR converter of inherent current sharing and reduced voltage stress on the active devices can be restored over wider operating range allowing a minimum gain of 2 M. The method is validated with extensive simulation results from multi-phase EDR boost and experimental results from a 250 W 3-phase EDR boost with GaN-based hardware prototype operating at 200 kHz switching frequency.
- Subjects :
- Materials science
business.industry
media_common.quotation_subject
020208 electrical & electronic engineering
05 social sciences
Electrical engineering
02 engineering and technology
Switched capacitor
Stress (mechanics)
Duty cycle
Boost converter
0202 electrical engineering, electronic engineering, information engineering
Conversion gain
Range (statistics)
0501 psychology and cognitive sciences
business
Duty
050107 human factors
media_common
Voltage
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- 2018 IEEE Applied Power Electronics Conference and Exposition (APEC)
- Accession number :
- edsair.doi...........c5708d58f8a4dcb3ea97ab287b660fea