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RISS 인기검색어
- 검색키워드
- 저자 : A. J. Ustariz-Farfan (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
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Self-Feeder Driver for Voltage Balance in Series-Connected IGBT Associations
A. F. Guerrero-Guerrero,A. J. Ustariz-Farfan,H. E. Tacca,E. A. Cano-Plata 전력전자학회 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.1
The emergence of high voltage conversion applications has resulted in a trend of using semiconductor device seriesassociations. Series associations allow for operation at blocking voltages, which are higher than the nominal voltage for each ofthe semiconductor devices. The main challenge with these topologies is finding a way to guarantee the voltage balance betweendevices in both blocking and switching transients. Most of the methods that have been proposed to mitigate static and dynamicvoltage unbalances result in increased losses within the device. This paper introduces a new series stack topology, where thevoltage unbalances are reduced. This in turn, mitigates the switching losses. The proposed topology consists of a circuit thatensures the soft switching of each device, and one auxiliary circuit that allows for switching energy recovery. The principle forthe topology operation is presented and experimental tests are performed for two modules. The topology performs excellently forswitching transients on each of the devices. The voltage static unbalances were limited to 10%, while the activation/deactivationdelay introduced by the lower module IGBT driver takes place in the dynamic unbalances. Thus, the switching losses are reducedby 40%, when compared to hard switching configurations.
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Self-Feeder Driver for Voltage Balance in Series-Connected IGBT Associations
Guerrero-Guerrero, A.F.,Ustariz-Farfan, A.J.,Tacca, H.E.,Cano-Plata, E.A. The Korean Institute of Power Electronics 2019 JOURNAL OF POWER ELECTRONICS Vol.19 No.1
The emergence of high voltage conversion applications has resulted in a trend of using semiconductor device series associations. Series associations allow for operation at blocking voltages, which are higher than the nominal voltage for each of the semiconductor devices. The main challenge with these topologies is finding a way to guarantee the voltage balance between devices in both blocking and switching transients. Most of the methods that have been proposed to mitigate static and dynamic voltage unbalances result in increased losses within the device. This paper introduces a new series stack topology, where the voltage unbalances are reduced. This in turn, mitigates the switching losses. The proposed topology consists of a circuit that ensures the soft switching of each device, and one auxiliary circuit that allows for switching energy recovery. The principle for the topology operation is presented and experimental tests are performed for two modules. The topology performs excellently for switching transients on each of the devices. The voltage static unbalances were limited to 10%, while the activation/deactivation delay introduced by the lower module IGBT driver takes place in the dynamic unbalances. Thus, the switching losses are reduced by 40%, when compared to hard switching configurations.
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