New Digital Control Architecture Eliminating the Need for High Resolution DPWM
New Digital Control Architecture Eliminating the Need for High Resolution DPWM
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新的数字控制架构消除了对高分辨率 DPWM 的需求
DOI：
10.1109/pesc.2007.4342093
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发表时间：
2007
期刊：
影响因子：
--
通讯作者：
Y. Qiu
中科院分区：
文献类型：
--
作者：
Jian Li;F. Lee;Y. Qiu
由于A/D转换器和数字脉宽调制器（DPWM）的非线性量化效应，电压型数控开关电源的极限环振荡难以预测。因此，一个具有非常高的分辨率的专用DPWM是必不可少的，以减少极限环振荡，这通常导致数字控制器的复杂性和高成本。本文研究了一种新的数字控制结构，消除了对高分辨率DPWM的需求，从而大大降低了成本。在硬件样机上进行了实验验证，以验证控制概念。
Due to the non-linear quantization effects of A/D converter and digital pulse-width modulator (DPWM), limit cycle oscillation is hard to predict in the voltage-mode digital controlled switching power supplies. As a result, one dedicated DPWM with very high resolution is indispensable to reduce the limit cycle oscillations, which usually results complexity and high cost for digital controllers. This paper investigates a new digital control architecture eliminating the needs for high resolution DPWM, so that greatly cost reduction can be achieved. Experimental verification is done at the hardware prototype to verify the control concept.