Development of High-Current Solid-State Power Controllers for Aircraft High-Voltage DC Network Applications

Solid-state power controllers (SSPCs) have been received increasing attention as they can configure the electrical system and protect by fast tripping mechanism at same time. Although high-voltage direct current (HVDC) bring sustainable savings on cables' weight losses, protection be considerably challenging. SSPCs successfully utilized for 28V DC aircraft onboard network. However, ones are impeded vast over-voltage excessive losses generated from SSPC switching. This paper tries to fill this gap presents development of high-power a ±270VDC network future turboprop aircraft. Comprehensive designs proper suppression along with thermal management presented in paper. Besides, comparative study device is carried out. Two prototypes, including single MOSFET module paralleling several discrete devices, built then tested experiment. It has validated that proposed voltage clamping design cannot only effectively suppress over-voltage, but also limit temperature increase during switching both candidates. After comparing conduction maximum junction temperature, density, volume, solution recommended preferable option