现代电子技术Issue(6)：164-166,170,4.
反激变换器的原边非线性电流控制方法
Primary-side nonlinear current control method for flyback converter
廖鸿飞 1帅定新 2梁奇峰1
作者信息
- 1. 中山火炬职业技术学院 电子工程系，广东 中山 528400
- 2. 攀枝花学院 电气信息工程学院，四川 攀枝花 617000
- 折叠
摘要
Abstract
Flyback converter is the common topology for LED driver. In order to reduce costs,reduce the influence of opti⁃calcoupler on the reliability of LED power supply,improve the control property of the system and avoid the LED damage caused by output overshoot when the linear control mode is started,a nonlinear control strategy which can indirectly control output con⁃stant current by controlling the primary current is proposed. Euler⁃Lagrange model of the flyback converter was established to ver⁃ify the passivity of the system based on passivity⁃based control theory,the relationship between the primary current and output current was obtained,and then the passivity⁃based control rule was deduced base on passivity theory and Layapunov stability theory. The control method proposed in this paper has advantages of simple controller structure,low cost,high reliability and good control performance. The validity of the control scheme was verified by test result. The flyback converter controlled by pri⁃mary nonlinear current control method has a stable output,high precision and exellent transient response,and no overshoot when startup as well.关键词
反激变换器/原边电流控制/无源性/非线性控制Key words
flyback converter/primary-side current control/passivity-based control/nonlinear control分类
信息技术与安全科学引用本文复制引用
廖鸿飞,帅定新,梁奇峰..反激变换器的原边非线性电流控制方法[J].现代电子技术,2013,(6):164-166,170,4.
