Necessary and Sufficient Stability Criterion and New Forbidden Region for Load Impedance Specification  

作　　者：LI Anshou ZHANG Donglai 

机构地区：[1]Shenzhen Graduate School,Harbin Institute of Technology

出　　处：《Chinese Journal of Electronics》2014年第3期628-634,共7页电子学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.51247009)

摘　　要：A necessary and sufficient impedance stability criterion for the DC Distributed power system(DPS)is proposed in small-signal sense, which has no conservativeness when compared with other stability criteria. This paper discusses the stability margin and gives it a definition for the round forbidden region. The reasons why the stability margin varies at different interfaces are also discussed in this paper. With the impedance stability criterion and stability margins considered, the sector forbidden region, which is a new forbidden region and can be easily calculated in the Bode diagram, is proposed to solve the calculation problem of the round forbidden region in engineering application. This paper also provides examples and simulations to verify the necessary and sufficient impedance stability criterion and the proposed sector forbidden region for the load impedance specification.A necessary and sufficient impedance stability criterion for the DC Distributed power system （DPS） is proposed in small-signal sense, which has no conservativeness when compared with other stability criteria. This paper discusses the stability margin and gives it a definition for the round forbidden region. The reasons why the stability margin varies at different interfaces are also discussed in this paper. With the impedance stability criterion and stability margins considered, the sector forbidden region, which is a new forbidden region and can be easily calculated in the Bode diagram, is proposed to solve the calculation problem of the round forbidden region in engineering application. This paper also provides examples and simulations to verify the necessary and sufficient impedance stability criterion and the proposed sector forbidden region for the load impedance specification.

关 键 词：Distributed power system （DPS） Stability criterion Forbidden region Load impedance specification 

分 类 号：TN86[电子电信—信息与通信工程]