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Protection Systems

Protection Systems

Copyright: © 2016 |Pages: 36
ISBN13: 9781466694293|ISBN10: 1466694297|EISBN13: 9781466694309
DOI: 10.4018/978-1-4666-9429-3.ch008
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MLA

Shahriyar Kaboli and Hashem Oraee. "Protection Systems." Reliability in Power Electronics and Electrical Machines: Industrial Applications and Performance Models, IGI Global, 2016, pp.303-338. https://doi.org/10.4018/978-1-4666-9429-3.ch008

APA

S. Kaboli & H. Oraee (2016). Protection Systems. IGI Global. https://doi.org/10.4018/978-1-4666-9429-3.ch008

Chicago

Shahriyar Kaboli and Hashem Oraee. "Protection Systems." In Reliability in Power Electronics and Electrical Machines: Industrial Applications and Performance Models. Hershey, PA: IGI Global, 2016. https://doi.org/10.4018/978-1-4666-9429-3.ch008

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Abstract

In the previous chapter, we assumed that there is no fault in the converter. To achieve a converter without failure, we presented the methods for stress reduction. However, a fault may occur in a system even operating with low stress. In the current chapter, we take one further step and assume that a fault occurs in the converter but there is a short time interval between fault occurrence and catastrophic damage to the converter. Therefore, the topic of this chapter is the methods for saving the converter in this condition. In this chapter, protection methods for saving the system against damaging faults are presented. Based on background of chapter two, protection systems should be able to bypass the effect of failure factors on electric power converter. Methods for current limiting and voltage clamping as the usual factors of failure in converters are described. Circuit diagram of a snubber is presented and its operation is described based on safe operating area of solid state power switches. Operating diagrams of fuses as emergency circuit breakers are presented. Measurement methods and devices used in protection systems are explained. Experimental samples and standard diagrams are presented to clarify the theoretical notes in all cases.

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