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

LI Anshou; ZHANG Donglai

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Article Navigation > Chinese Journal of Electronics > 2014 > 23(3): 628-634

LI Anshou and ZHANG Donglai, “Necessary and Sufficient Stability Criterion and New Forbidden Region for Load Impedance Specification,” Chinese Journal of Electronics, vol. 23, no. 3, pp. 628-634, 2014,

Citation:

LI Anshou and ZHANG Donglai, “Necessary and Sufficient Stability Criterion and New Forbidden Region for Load Impedance Specification,” Chinese Journal of Electronics, vol. 23, no. 3, pp. 628-634, 2014,

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

Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China

Funds: This work is supported by the National Natural Science Foundation of China (No.51247009).

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Corresponding author: ZHANG Donglai
Received Date: 2013-04-01
Rev Recd Date: 2013-11-01
Publish Date: 2014-07-05

Abstract

Abstract

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.
- Distributed power system (DPS),
- Stability criterion,
- Forbidden region,
- Load impedance specification

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References(19)

References

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