Synchronous Generator Rectification System Based on Double Closed-Loop Control of Backstepping and Sliding Mode Variable Structure

Low-voltage and high-current direct current (DC) power supplies are essential for aerospace and shipping. However, its robustness and dynamic response need to be optimized further on some special occasions. In this paper, a novel rectification system platform is built with the low-voltage and high-c...

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Bibliographic Details
Published inElectronics (Basel) Vol. 10; no. 15; p. 1832
Main Authors Liu, Jinfeng, Qu, Xin, Iu, Herbert Ho-Ching
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.08.2021
Subjects
Active control
Control methods
Control stability
Control systems
Controllers
Coordinate transformations
Design
Direct current
Dynamic response
Electric potential
Electric power supplies
High current
Mathematical models
Mutation
Permanent magnets
Power factor
Power supply
Robustness
Sliding mode control
Subsystems
Variable structure control
Variables
Voltage
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Summary:Low-voltage and high-current direct current (DC) power supplies are essential for aerospace and shipping. However, its robustness and dynamic response need to be optimized further on some special occasions. In this paper, a novel rectification system platform is built with the low-voltage and high-current permanent magnet synchronous generator (PMSG), in which the DC voltage double closed-loop control system is constructed with the backstepping control method and the sliding mode variable structure (SMVS). In the active component control structure of this system, reasonable virtual control variables are set to obtain the overall structural control variable which satisfied the stability requirements of Lyapunov stability theory. Thus, the fast-tracking and the global adjustment of the system are realized and the robustness is improved. Since the reactive component control structure is simple and no subsystem has to be constructed, the SMVS is used to stabilize the system power factor. By building a simulation model and experimental platform of the 5 V/300 A rectification module based on the PMSG, it is verified that the power factor of the system can reach about 98.5%. When the load mutation occurs, the DC output achieves stability again within 0.02 s, and the system fluctuation rate does not exceed 2%.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics10151832