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Transient Stability Analysis of DC Solid State Power Controller (SSPC) for More Electric Aircraft
Technical Paper
2018-01-1927
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
The solid state power controller (SSPC) is one of the most important power electronic components of the aircraft electrical power distribution (EPS) systems. This paper presents an architecture of the DC SSPC and provides the mitigation techniques for transient voltage overshoot during its turn-off. The high source side inductance carries breaking current (9xnominal current) just before turnoff and induces large voltage transient across the semiconductor devices. Therefore, the stored inductive energy needs to be dissipated in order to prevent semiconductor switches from over-voltage/thermal breakdown. Three different transient voltage suppression (TVS) devices to reduce voltage stress across switches are included in the paper for detail study. The comprehensive comparison of the TVS devices is presented. In addition, the thermal impact of the TVS devices on the semiconductor switches is also analyzed. Later, the transient simulation model of the SSPC is built in LT-Spice and the effectiveness of the proposed protection mechanisms is verified.
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Adhikari, J., Yang, T., Rashed, M., Bozhko, S. et al., "Transient Stability Analysis of DC Solid State Power Controller (SSPC) for More Electric Aircraft," SAE Technical Paper 2018-01-1927, 2018, https://doi.org/10.4271/2018-01-1927.Data Sets - Support Documents
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