Simplified analysis of PWM converters using model of PWM switch. II. Discontinuous conduction mode
Simplified analysis of PWM converters using model of PWM switch. II. Discontinuous conduction mode
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DOI：
10.1109/7.106127
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发表时间：
1990-05
影响因子：
4.4
通讯作者：
V. Vorperian
中科院分区：
文献类型：
--
作者：
V. Vorperian
关于PT，见同上，第26卷，第3期，第490 -6页（1990）。根据状态空间平均法，当脉宽调制（PWM）变换器进入不连续导通模式（DCM）时，变换器的平均模型中会丢失电感电流状态。它表明，既没有理论也没有实验的理由所声称的状态空间平均的方法的电感器状态的消失。例如，当DCM中的PWM开关的模型在降压、升压或降压-升压转换器中被替换而电感器保持不变时，平均模型具有两个极点：第一极点f/sub p1/与状态空间平均的单极一致，而第二极点f/sub p2/出现在范围f/sub p2/>或=F/sub s// pi中。它示出的右半平面零点存在于控制输出传递函数的升压，降压-升压，和Cuk转换器在连续导通模式也存在于不连续导通模式。>
For pt.I see ibid., vol.26, no.3, p.490-6 (1990). According to the method of state-space averaging, when a pulsewidth modulation (PWM) converter enters discontinuous conduction mode (DCM), the inductor current state is lost from the average model of the converter. It is shown that there is neither theoretical nor experimental justification for the disappearance of the inductor state as claimed by the method of state-space averaging. For example, when the model of the PWM switch in DCM is substituted in the buck, boost, or buck-boost converter while the inductor is left intact, the average model has two poles: the first pole f/sub p1/ agrees with the single pole of state-space averaging, while the second pole f/sub p2/ occurs in the range f/sub p2/>or=F/sub s// pi . It is shown that the right-half plane zeros present in the control-to-output transfer functions of the boost, buck-boost, and Cuk converters in continuous conduction mode are also present in discontinuous conduction mode. >