New digital control method for improving dynamic performance of a quasi-resonant flyback converter

被引：0

作者：

Wang, Chong ^{[1
]}

Xu, Shen ^{[1
]}

Yu, Limin ^{[1
]}

Qian, Qinsong ^{[1
]}

Lu, Shengli ^{[1
]}

Sun, Weifeng ^{[1
]}

Li, Haisong ^{[2
]}

机构：

[1] Southeast Univ, Natl ASIC Syst Engn Res Ctr, Nanjing 210096, Jiangsu, Peoples R China

[2] Wuxi Chipown Microelect Ltd Co, Wuxi 210096, Jiangsu, Peoples R China

来源：

THIRTY-FOURTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC 2019) | 2019年

关键词：

Quasi-resonant flyback converter; valley switching; digital control; dynamic response;

D O I：

暂无

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

To improve the dynamic performance of a quasi-resonant flyback converter, a new digital control method is proposed. When the output voltage is below the lower limit, continuous conduction modulation (CCM) mode with high magnetizing current is applied to increase the input power which pulls up the output voltage very fast. When the output voltage is higher than the upper limit, a proportional iterative of switching period (PISP) is firstly applied to detect the stable control parameters of the changed load. After PISP, the switch is then kept off. The output voltage returns to the reference voltage at its maximum speed. When the output voltage returns to the reference voltage, the stable control parameters are used as starting control parameters of nominal control which automatically eliminates the following voltage resonance. Based on the proposed control method, the dynamic performance is greatly improved. In a 12V/3A prototype, compared to nominal control, the maximum undershoot and overshoot voltages are reduced from 11.60V to 1.02V and 1.44V to 0.88V. The maximum undershoot and overshoot recovery times are reduced from 654.0us to 59.8us and 47.4ms to 2.92ms, respectively.

引用

页码：1788 / 1793

页数：6

共 11 条

[1] Single stage soft switching ac/dc converter without any extra switch [J].

Abasian, Alireza ;

Farzaneh-fard, Hosein ;

Madani, Seyed .

IET POWER ELECTRONICS, 2014, 7 (03) :745-752

[2]

[Anonymous], P IEEE INT C POW EL

[3]

Barot T, 2015, 2015 16TH INTERNATIONAL CARPATHIAN CONTROL CONFERENCE (ICCC), P33, DOI 10.1109/CarpathianCC.2015.7145040

[4] Single-Switch Soft-Switched Isolated DC-DC Converter [J].

Emrani, Amin ;

Adib, Ehsan ;

Farzanehfard, Hosein .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2012, 27 (04) :1952-1957

[5]

Jong Seok Park, 2015, 2015 IEEE Biomedical Circuits and Systems Conference (BioCAS), DOI 10.1109/BioCAS.2015.7348333

[6] Integrated ZCS quasi-resonant power factor correction converter based on flyback topology [J].

Lee, JY ;

Moon, GW ;

Park, HJ ;

Youn, MJ .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2000, 15 (04) :634-643

[7] Fast-transient DC-DC converter with hysteresis prediction voltage control [J].

Liu, Pang-Jung ;

Lai, Yu-Min ;

Lee, Ping-Chieh ;

Chen, Hsin-Shu .

IET POWER ELECTRONICS, 2017, 10 (03) :271-278

[8]

Sugimura H., 2006, PROC IEEE CES 5 INT, P1

[9]

Tian Feng, 2010, P INT 2010 C

[10] Novel Digital Control Method for Improving Dynamic Responses of Multimode Primary-Side Regulation Flyback Converter [J].

Wang, Chong ;

Xu, Shen ;

Fan, Xianjun ;

Lu, Shengli ;

Sun, Weifeng .

IEEE TRANSACTIONS ON POWER ELECTRONICS, 2017, 32 (02) :1457-1468

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