|本期目录/Table of Contents|

[1]刘和平,李金龙,苗轶如,等. LLC 谐振电路无传感器同步整流控制策略[J].电机与控制学报,2014,18(05):49-55.
 LIU He-ping,LI Jin-long,MIAO Yi-ru,et al. Sensorless synchronous rectifier control strategy used in LLC resonant circuit[J].,2014,18(05):49-55.
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 LLC 谐振电路无传感器同步整流控制策略(PDF)
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《电机与控制学报》[ISSN:1007-449X/CN:23-1 408/TM]

卷:
18
期数:
2014年05
页码:
49-55
栏目:
出版日期:
2014-05-15

文章信息/Info

Title:
 Sensorless synchronous rectifier control strategy used in LLC resonant circuit
作者:
 刘和平 李金龙 苗轶如 彭东林
 1. 重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044;
2. 重庆理工大学机械检测技术与装备教育部工程研究中心,重庆400054
Author(s):
 LIU He-ping LI Jin-long MIAO Yi-ru PENG Dong-lin
 1. State Key Laboratory of Transmission & Distribution Equipment and Power System Safety and New Technology,Chongqing University,Chongqing 400044,China; 2. Engineering Research Center of Mechanical Testing Technology and Equipment of Ministry of Education,Chongqing University of Technology,Chongqing 400054,China
关键词:
 同步整流 无传感器 电压变化 LLC 电路 自适应控制
Keywords:
 synchronous rectifier sensorless control voltage detection LLC circuit adaptive control
分类号:
-
DOI:
-
文献标志码:
A
摘要:
 针对同步整流驱动优劣改变会引起LLC 谐振电路输出电压变化的特点,分析推导出了
LLC 电路输出电压与同步驱动时间成单峰关系曲线,根据峰值两侧驱动时间改变造成输出电压不
同变化率的特点,提出一种无传感器同步整流控制策略。研究了LLC 电路三种工作模式下的同步
整流驱动时间调节策略,同时为实现同步整流快速调节,采用了变步长调节模式,最后分析了同步
整流调节与谐振调节之间的动态关系。搭建了一个36 ~ 72V 输入,1V/20A 输出的实验样机用以
验证控制策略正确性,实验结果表明对LLC 电路在不同输入和负载条件下都可实现同步整流。
关键词: 同步整流; 无传感器; 电压变化; LLC 电路; 自适应控制
Abstract:
 Based on the character of LLC resonant converter output voltage with the synchronous rectifier
driving,the single-peak relationship curve of LLC resonant converter output voltage and the synchronous
rectifier driving time was analyzed and deduced. According to the different change rate of the two side of
peak point,a sensorless control strategy of synchronous rectifier was put forward. The synchronous rectifier
drive time adjustment strategy of three working mode in LLC resonant converter was studied,and in order
to realize quick adjustment,variable step length adjustment was used. Finally the dynamic relationship
between synchronous rectifier adjustment and resonance adjustment was analyzed. A 36 ~ 72V input,
output 1V/20A experimental prototype verified the control strategy has good effect on synchronous
drive in different input and output.

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备注/Memo

备注/Memo:
更新日期/Last Update: 2014-11-26