A high-voltage DC power system for hybrid electric propulsion aircraft

Abstract

Embodiments of the present invention disclose a high-voltage direct current power system for hybrid electric propulsion aircraft, which relates to the technical field of electric propulsion and can improve the safety, efficiency and power density of the power supply system. The invention includes: a first electric ducted fan, a second electric ducted fan, a turbofan engine, a combined power device, a power distribution system, a low-voltage battery, a high-voltage battery, a low-voltage electrical load, and a high-voltage electrical load. The power distribution system includes built-in generator system / drive motor system, built-in starter-generator system, first DC / DC converter, second DC / DC converter, low-voltage DC bus bar, combined power unit motor-generator system , No. 1 main circuit breaker, No. 2 main circuit breaker, No. 3 main circuit breaker. The invention is suitable for hybrid electric propulsion aircraft.

Description

technical field [0001] The present invention relates to the technical field of electric propulsion, and in particular to a high-voltage direct current power system for a hybrid electric propulsion aircraft. Background technique [0002] At present, transportation electrification is an important technical direction to achieve the national 2060 carbon neutrality plan. In the aviation field, due to the low power and energy density of traditional batteries, the application of pure electric aircraft has been subject to many restrictions. It is difficult to solve the problems of small aircraft payload and short range caused by excessive battery weight. The solution of hybrid electric propulsion aircraft can solve the above problems, but it faces more serious and complex power management problems. [0003] The electrical load of the hybrid electric propulsion aircraft includes not only secondary energy, but also a high-power drive motor system for electric ducted fans, while tradi...

AI Technical Summary

Problems solved by technology

Therefore, the power capacity has been greatly increased, and the requirements for the reliability and power density of the power system are getting higher and higher. However, it is still difficult for aircraft batteries to meet the requirements. It is urgent to propose a reasonable and feasible power system and power system architecture.

Moreover, the failure of the power supply system will also cause the problem that the electric drive system cannot work, which will affect flight safety.

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