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- 저자 : Shubo Zhi (검색결과 3 건)
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Stability Analysis and Research of SAR Satellite Power Supply System
Zhi Shubo,Shi Junbiao,Si Xueyuan,Chen Yonggang,Ji Zhipo,Wan Chengan 대한전기학회 2024 Journal of Electrical Engineering & Technology Vol.19 No.4
The modeling analysis on the secondary load power supply and pulse load of the synthetic aperture radar (SAR) has been conducted in this paper. To satisfy the requirements of the SAR satellite power system featured with the large load platform power ratio, large capacitive pulse work, and relatively high stability of the bus bar. Meanwhile, the experiment on features of impedance had been carried out on the secondary power supply system for the satellite power system. Viewing the features of the SAR power supply system, a method has been put forward to enhance the stability of the work system. And the related work has been conducted the related stability work concerning various load modes. The experimental results are consistent with the analysis, showing that the power supply system is stable, which satisfi es the need for SAR satellite payload.
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Direct Current Control Method Based On One Cycle Controller for Double-Frequency Buck Converters
Quanming Luo,Shubo Zhi,Weiguo Lu,Luowei Zhou 전력전자학회 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.3
In this paper, a direct current control method based on a one-cycle controller (DCOCC) for double frequency buck converters (DF buck) is proposed. This control method can make the average current through the high frequency and low frequency inductors of a DF buck converter equal. This is similar to the average current control method. However, the design of the loop compensator is much easier when compared with the average current control. Since the average current though the high frequency and low frequency inductors is equivalent, the current stress of the high frequency switches and the switch losses are minimized. Therefore, the efficiency of the DF buck converter is improved. Firstly, the operation principle of DCOCC is described, then the small signal models of a one cycle controller and a DF buck converter are presented based on the state space average method. Eventually, a system block diagram of the DCOCC controlled DF buck is established and the compensator is designed. Finally, simulation and experiment results are given to verify the correction of the theory analysis.
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Direct Current Control Method Based On One Cycle Controller for Double-Frequency Buck Converters
Luo, Quanming,Zhi, Shubo,Lu, Weiguo,Zhou, Luowei The Korean Institute of Power Electronics 2012 JOURNAL OF POWER ELECTRONICS Vol.12 No.3
In this paper, a direct current control method based on a one-cycle controller (DCOCC) for double frequency buck converters (DF buck) is proposed. This control method can make the average current through the high frequency and low frequency inductors of a DF buck converter equal. This is similar to the average current control method. However, the design of the loop compensator is much easier when compared with the average current control. Since the average current though the high frequency and low frequency inductors is equivalent, the current stress of the high frequency switches and the switch losses are minimized. Therefore, the efficiency of the DF buck converter is improved. Firstly, the operation principle of DCOCC is described, then the small signal models of a one cycle controller and a DF buck converter are presented based on the state space average method. Eventually, a system block diagram of the DCOCC controlled DF buck is established and the compensator is designed. Finally, simulation and experiment results are given to verify the correction of the theory analysis.
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