| 车载充电电源DC/DC变换器数字控制系统设计 |
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| 引用本文： | 郑征,秦熙东,陶海军.车载充电电源DC/DC变换器数字控制系统设计[J].汽车技术,2019(7):53-58. |
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| 作者姓名： | 郑征 秦熙东 陶海军 |
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| 作者单位： | 河南理工大学 |
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| 基金项目： | 河南省矿山电力电子装置与控制创新型科技团队项目;河南省高等学校重点科研项目资助计划项目(18A410001) |
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| 摘 要： | 针对车载充电电源核心部分移相全桥DC/DC变换器存在的动态响应慢、次谐波振荡和软开关范围受限等问题,设计了新的移相全桥DC/DC变换器控制系统。采用基于数字信号处理器(DSP)的数字峰值电流控制,引入斜坡补偿,提出了自动死区控制技术,并设计了驱动电路和采样电路,试验结果表明,该电源消除了次谐波振荡,实现了宽范围的软开关,提高了系统的动态性能和抗干扰能力,优化了电源效率。
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| 关 键 词： | 车载充电电源 DC/DC变换器 数字峰值电流控制 斜坡补偿 自动死区控制 |
Design of DC/DC Converter Digital Control System for On-board Charger |
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| Zheng Zheng,Qin Xidong,Tao Haijun.Design of DC/DC Converter Digital Control System for On-board Charger[J].Automobile Technology,2019(7):53-58. |
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| Authors: | Zheng Zheng Qin Xidong Tao Haijun |
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| Institution: | (Henan Polytechnic University,Jiaozuo 454000) |
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| Abstract: | As a core part of the on-board charger,the Phase-Shifted Full-Bridge (PSFB) DC/DC converter has the defects of slow dynamic response,subharmonic oscillation and limited soft-switching range.In order to solve these issues,a novel PSFB DC/DC converter control system is designed.The DSP-based digital Peak Current Mode Control (PCMC) is adopted with slope compensation.The automatic dead band control technology is proposed and the drive circuit and sampling circuit are designed.Finally,the experimental results of PSFB DC/DC converter show that the converter eliminates subharmonic oscillation,realizes a wide range of soft switching,improves the dynamic performance and anti-interference ability of the system,and optimizes the power efficiency. |
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| Keywords: | On- board charger DC/DC converter Digital PCMC Slope compensation Automatic dead band control |
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