2016 Fiscal Year Final Research Report
Low-Voltage DC Circuit Breaker Constructed of Power Semi-Conductor: Toward High Current Breaking Ability
| Project/Area Number |
26420229
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Power engineering/Power conversion/Electric machinery
|
|---|
| Research Institution | Nagoya University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2014-04-01 – 2017-03-31
|
| Keywords | 大電流 / 直流 / 遮断器 / 限流遮断 / パワー半導体 |
|---|
| Outline of Final Research Achievements |
A model low-voltage DC circuit breaker has been constructed to apply an insulated gate bipolar transistor to the direct-current interruption. The model circuit breaker functions limitation and interruption of the DC through a decrease in a gate-emitter voltage with an elapsed time at a certain time-constant. This research was performed to make the comprehensive elucidation on the current breaking properties.
With regard to a current breaking property, the model circuit breaker designed with the time constant of 5 and 1 ms proved to accomplish the current interruption even for 300 A and even for the circuit inductance of 4.2 mH. Deriving an ohmic heat emerging during a current-limiting period allowed to find out the successful-interruption criterion that the ohmic heat energy is lower than 25 J or the current limiting time is longer than about 5 ms.
|
| Free Research Field |
電気工学
|
