双脉冲调制PWM隔离DC-DC变换器的数字PWM控制

2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition Pub Date : 2009-03-21 DOI:10.1109/APEC.2009.4802667

Weiyi Feng, Xu Yang, Haizhong Ye, Xianwei Wang, G. Xiao

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引用次数: 3

摘要

本文提出了一种新的隔离式DC-DC变换器数字控制方案。与非隔离型DC-DC变换器相比，隔离型变换器需要实现一次侧和二次侧控制的隔离。本文采用两个fpga实现了整个数字控制系统。二次侧包括一个补偿器(PI调节器)、一个高分辨率数字PWM (DPWM)、一个调制器和一个载波发射器。另一个在主侧包含载波接收器、解调器和辅助控制器来完成一些保护并产生同步信号。提出并分析了几种调制解调DPWM信号的方法。PWM波形的调制(或载波)信号和同步信号分别通过两个非常小的信号变压器在初级侧和次级侧之间传输，以实现隔离。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Digital PWM Control for Isolated DC-DC Converters with Two Pulses Modulating PWM

This paper describes a novel digital control solution for isolated DC-DC converter. Compared with non-isolated DC-DC converters, isolated ones need to realize isolation of control between primary and secondary side. In this paper, the whole digital control system is implemented using two FPGAs. The one on the secondary side includes a compensator (PI regulator), a high resolution digital PWM (DPWM), a modulator and a carrier transmitter. Another one on the primary side contains a carrier receiver, a demodulator and a subsidiary controller to fulfill some protection and generate synchronous signal. Several approaches to modulate and demodulate DPWM signal are proposed and analyzed. The modulated (or carrier) signals of PWM waveform and synchronous signals are transmitted between primary and secondary side through two very small signal transformers respectively to fulfill isolation.

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2009 Twenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition

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