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Voltage-spike analysis for a free-running parallel inverterUnwanted and sometimes damaging high-amplitude voltage spikes occur during each half cycle in many transistor saturable-core inverters at the moment when the core saturates and the transistors switch. The analysis shows that spikes are an intrinsic characteristic of certain types of inverters even with negligible leakage inductance and purely resistive load. The small but unavoidable after-saturation inductance of the saturable-core transformer plays an essential role in creating these undesired thigh-voltage spikes. State-plane analysis provides insight into the complex interaction between core and transistors, and shows the circuit parameters upon which the magnitude of these spikes depends.
Document ID
19740062401
Document Type
Reprint (Version printed in journal)
Authors
Lee, F. C. Y.
Wilson, T. G. (Duke University Durham, N.C., United States)
Date Acquired
August 7, 2013
Publication Date
September 1, 1974
Subject Category
AUXILIARY SYSTEMS
Funding Number(s)
CONTRACT_GRANT: NGL-34-001-001
Distribution Limits
Public
Copyright
Other