This paper introduces a spacecraft power supply applied to grid connected system. According to the grid connected power supply demand of spacecraft power supply, the three domain control strategy of satellite power supply is extended to five domain control strategy to realize the grid connected energy transmission function of spacecraft power supply. This paper introduces the principle of the five domain control strategy, gives the structure of the power supply, and finally tests the load step of the designed power supply.
KEYWORDS: Capacitors, Control systems, Inductance, Switching, Switches, Signal analyzers, Prototyping, Systems modeling, MATLAB, Control systems design
Aiming at the Superbuck circuit applied to the Battery Charge Regulator (BCR) of the space Power Conditioning Unit (PCU), the damping network is connected in parallel with the middle capacitor to eliminate the RHP zeros and improve the characteristics of the high order converter. The small signal model of the system was established through the time-average model, and the double closed-loop control strategy of peak current control was proposed based on the constant current charging mode. Then, the bode diagram of the transfer function was obtained in Simplis simulation software. Finally, the experimental platform of Superbuck circuit was built, and it is proved that the Superbuck circuit with damping network has good steady-state and dynamic performance under the proposed control strategy.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
PERSONAL Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.