摘要
为解决电源内阻对双向DC-DC变换器性能的影响问题,研究一种考虑电源内阻的双向DC-DC变换器的基础拓扑,建立其状态空间平均模型,并利用小信号分析法得到系统传递函数。通过伯德图分析电源内阻对双向DC-DC变换器控制器性能的影响,提出一种考虑电源内阻的双向DC-DC变换器控制器参数设计方法。以升压模式为例,在PSCAD/EMTDC中验证了电源内阻对双向DC-DC变换器输出电压波动性和暂态稳定性的影响。结果表明,电源内阻会对双向DC-DC变换器的控制性能产生影响,控制参数的设计必须考虑电源内阻。
In order to solve the problem of influence on bidirectional DC-DC converter（BDC） by source impedance, this paper studies a kind of fundamental topology considering source impedance, establishes an average model for its state space and uses small signal analysis method to get transfer function of the system. Based on bode diagram, it analyzes influence of source impedance on performance of the controller of BDC and presents a kind of design method for controller parameters of BDC considering source impedance. Taking boost mode for an example, it verifies influence of source impedance on volatility and transient stability of output voltage of BDC in PSCAD/EMTDC. Results indicate that source impedance has an effect on controlling performance of BDC and it is necessary to consider source impedance for designing control parameters.
出处
《广东电力》
2016年第10期24-30,68,共8页
Guangdong Electric Power
基金
广东电网有限责任公司科技支撑计划项目(GDKJ00000045)
关键词
双向DC-DC变换器
电源内阻
数学模型
小信号分析
控制器参数设计
bidirectional DC-DC converter
source impedance
mathematical model
small signal analysis
parameter design of controller
