1. Development of an Adaptive EMI Cancellation Strategy for Stationary Clocked Systems
- Author
-
Stephan Frei, Marc Wiegand, Andreas Bendicks, Norbert Hees, and Tobias Dorlemann
- Subjects
Computer science ,020208 electrical & electronic engineering ,Electromagnetic compatibility ,020206 networking & telecommunications ,02 engineering and technology ,Electromagnetic interference ,Power (physics) ,Harmonic analysis ,EMI ,Harmonics ,0202 electrical engineering, electronic engineering, information engineering ,Electronic engineering ,Hardware_ARITHMETICANDLOGICSTRUCTURES ,Field-programmable gate array ,Active filter - Abstract
Cancellation of disturbing signals is a common strategy in EMC. In this work, a specialized strategy is developed to cancel the disturbing harmonics of stationary clocked systems. This strategy is refined by an adaptive approach to conveniently find the optimum signals for cancellation. As a special feature of this method, all troublesome effects, like delays or attenuations, can easily be compensated. From a basic theory, two implementation variants are derived: 1) Continuously Adapted Harmonics Cancellation (CAHC) and 2) Previously Adapted Harmonics Cancellation (PAHC). CAHC is implemented on an FPGA-system. The hardware, programming and performance of the utilized FPGA and its peripherals are transparently discussed. The effectivity of the method is demonstrated for a power electronic dc-to-dc converter.
- Published
- 2018