Examines design parameters for a magnetic current limiter in voltage source circuits, indicating practical implications.
Recent papers by the authors have demonstrated the potential for providing rate-of-current-change (dl/dt) and current limiting protection for voltage source fed circuits through the use of a composite magnetic device. The application of such a device is presently hampered by the limited choice of commercially available permanent magnet and low saturation flux density materials with square B/H loops. This paper examines the operation of the passive dl/dt or current limiter with a view toward specifying the desired geometric device profile and material characteristics. A voltage source inverter design example is used to illustrate the method by which the design parameters for the device would be specified.
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山田 et al. (1997) studied this question.
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