Abstract
This paper examines a supporting method to SSC for more reliable fault mitigation by investigating bidirectional AC/DC converter topology with DC fault current blocking capability. Replacement of semiconductor switches with full bridge cells allows instant reversal of voltage polarities to limit rapid capacitor discharge and machine inductive currents. Demonstration of this capability is realized by tracking DC fault currents in time-domain simulations of a ±270 VDC converter dynamic model built in MATLAB-Simulink.
Simulation results have shown that the modified power converter topology provides a fast response to DC faults and it can be considered as a back-up to SSCs in clearing faults in ±270 VDC distribution systems.
| Language | English |
|---|---|
| Number of pages | 12 |
| DOIs | |
| Publication status | Published - 15 Sep 2015 |
| Event | SAE 2015 AeroTech Congress & Exhibition - Seattle, United States Duration: 22 Sep 2015 → 24 Sep 2015 |
Conference
| Conference | SAE 2015 AeroTech Congress & Exhibition |
|---|---|
| Country | United States |
| City | Seattle |
| Period | 22/09/15 → 24/09/15 |
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Keywords
- DC primary distribution systems
- short circuit protection
- solid state contactors
- DC fault interruption
- fault mitigation
- bidirectional AC/DC converter topology
- DC fault current blocking capability
- bridge cells
- capacitor discharge
- machine inductive currents
Cite this
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AC/DC converter with DC fault suppression for aircraft +/- 270 VDC distribution systems. / Sztykiel, Michal; Fletcher, Steven; Norman, Patrick; Galloway, Stuart; Burt, Graeme.
2015. Paper presented at SAE 2015 AeroTech Congress & Exhibition, Seattle, United States.Research output: Contribution to conference › Paper
TY - CONF
T1 - AC/DC converter with DC fault suppression for aircraft +/- 270 VDC distribution systems
AU - Sztykiel, Michal
AU - Fletcher, Steven
AU - Norman, Patrick
AU - Galloway, Stuart
AU - Burt, Graeme
N1 - Reprinted with Permission from SAE International. Sztykiel, M., Fletcher, S., Norman, P., Galloway, S., & Burt, G. (2015). AC/DC converter with DC fault suppression for aircraft +/- 270 VDC distribution systems. Paper presented at SAE 2015 AeroTech Congress & Exhibition, Seattle, United States. https://dx.doi.org/10.4271/2015-01-2411
PY - 2015/9/15
Y1 - 2015/9/15
N2 - The increasing electrical demand in commercial and military aircraft justifies a growing need for higher voltage DC primary distribution systems. A DC system offers reduced power losses and space savings, which is of major importance for aircraft manufacturers. At present, challenges associated with DC systems include reliable fast acting short circuit protection. Solid State Contactors (SSC) have gained wide acceptance in traditional 28 VDC secondary systems for DC fault interruption. However, the reliable operation at higher operating voltages and currents requires further technology maturation.This paper examines a supporting method to SSC for more reliable fault mitigation by investigating bidirectional AC/DC converter topology with DC fault current blocking capability. Replacement of semiconductor switches with full bridge cells allows instant reversal of voltage polarities to limit rapid capacitor discharge and machine inductive currents. Demonstration of this capability is realized by tracking DC fault currents in time-domain simulations of a ±270 VDC converter dynamic model built in MATLAB-Simulink.Simulation results have shown that the modified power converter topology provides a fast response to DC faults and it can be considered as a back-up to SSCs in clearing faults in ±270 VDC distribution systems.
AB - The increasing electrical demand in commercial and military aircraft justifies a growing need for higher voltage DC primary distribution systems. A DC system offers reduced power losses and space savings, which is of major importance for aircraft manufacturers. At present, challenges associated with DC systems include reliable fast acting short circuit protection. Solid State Contactors (SSC) have gained wide acceptance in traditional 28 VDC secondary systems for DC fault interruption. However, the reliable operation at higher operating voltages and currents requires further technology maturation.This paper examines a supporting method to SSC for more reliable fault mitigation by investigating bidirectional AC/DC converter topology with DC fault current blocking capability. Replacement of semiconductor switches with full bridge cells allows instant reversal of voltage polarities to limit rapid capacitor discharge and machine inductive currents. Demonstration of this capability is realized by tracking DC fault currents in time-domain simulations of a ±270 VDC converter dynamic model built in MATLAB-Simulink.Simulation results have shown that the modified power converter topology provides a fast response to DC faults and it can be considered as a back-up to SSCs in clearing faults in ±270 VDC distribution systems.
KW - DC primary distribution systems
KW - short circuit protection
KW - solid state contactors
KW - DC fault interruption
KW - fault mitigation
KW - bidirectional AC/DC converter topology
KW - DC fault current blocking capability
KW - bridge cells
KW - capacitor discharge
KW - machine inductive currents
UR - http://www.sae.org/events/atc/2015/
U2 - 10.4271/2015-01-2411
DO - 10.4271/2015-01-2411
M3 - Paper
ER -