Mathematical Models and Circuits of Test Impulse Noise Generators for Electromagnetic Compatibility Calculations

BACKGROUND: Marine electronic and electrical equipment may not be supplied to ships unless it meets the impulse noise immunity requirements. Tests of equipment designed without due regard of such requirements record its failures. It is important to be able to predict the effects of noise at the equipment design stage. AIM: To provide mathematical models and circuit simulations of test impulse noise generators to verify the impulse noise immunity of circuits during their development. METHODS: The study is based on the electromagnetic compatibility standards of the Russian Maritime Register of Shipping and IEC 61000-4 standards of the International Electrotechnical Commission. The study uses mathematical descriptions of pulse waveforms and electrical engineering software used to simulate circuits. RESULTS: The study provides formulas describing standard impulse noise, detailed diagrams of test generators used in simulation software, examples of models, and errors of simulated noise parameters. CONCLUSION: The proposed models and simulations allow predicting the effect of noise at the equipment design stage prior to noise immunity tests and reduce the time and cost of equipment modification.