自激电子镇流器非线性控制特性的研究  

Nonlinear Control Characteristic Research of Self-Oscillating Electronic Ballast

作　　者：刘晨阳[1] 张仲超[1] 

机构地区：[1]浙江大学电气工程学院,杭州310027

出　　处：《电工技术学报》2003年第5期91-96,共6页Transactions of China Electrotechnical Society

摘　　要：从控制系统的角度出发分析了自激LC串联谐振并联负载型电子镇流器。由于谐振网络的品质因数比较低 ,以往常角的基波近似分析法准确性差。如果把工作在高频状态下的灯管近似等效为电阻 ,可以得到谐振电路中各个变量在时域内的闭合解。同时自激LC串联谐振并联负载型电子镇流器是一个理想继电型的非线性系统 ,本文运用基于频域的Tsypkin轨迹法和基于时域的Hamel轨迹法对该非线性系统的控制特性作了详细的分析。通过一个 36W的自激LC串联谐振并联负载型电子镇流器的设计和实验 。In this paper,we examine the self-oscillating LC series resonant parallel load inverter for electronic ballast applications from a system point of view.Since the Q of the resonant network in often low,the analysis in the form of fundamental sinusoidal approximation is not accurate enough.By considering the discharge lamp as a resistor in steady state,we derive a time-domain closed-form expression of the circuit state variables.At the same time,it is observed that the self-oscillating series resonant parallel load inverter with lamp loads can be naturally modeled as a relay system.The control model of this relay sistem is analyzed in detail by Tsypkin locus (frequency domain) and Hamel locus (time domain) methods.The design approach is described and implemented successfully in a 36W fluorescent lamp system.

关 键 词：自激振荡 电子镇流器 继电型非线性系统 Tsypkin轨迹法 Hamel轨迹法 

分 类 号：TM461.3[电气工程—电器]