摘要
将PWM变换器按其工作状态,分别写出开关导通和截止时的数学模型,根据其周其工作的特点,写出其非线性采样数据模型,将该方法用于变换器功率级的建模。以连续导通电压型DC-DC变换器为例,给出了PWM变换器功率级的一种非线性和线性化的采样数据模型,并推导了考虑到控制作用延迟时由控制到输出的传递函数,满足了控制器设计的需要。
According to the operating states of PWM converter, two models are given when the gate is turned on or off. Then the nonlinear sampled-data model is deduced periodically, which is used to model the power stage of DC-DC converters. The nonlinear and linearized sampled-data dynamics are proposed for power stage of DC-DC converters in continuous conduction mode under voltage mode control. Involving the control delay, the control to output transfer function in the system is derived, which is necessary for controller design.
出处
《电子器件》
EI
CAS
2006年第3期745-747,共3页
Chinese Journal of Electron Devices
基金
哈尔滨工业大学(威海)科学基金资助(IMXK57000009)
