| The increased number of electronic systems in today's car designs requires that each system is EMC compliant prior to vehicle assembly. Each system or component automotive supplier is mandated to perform system level EMC testing according to the car manufacturer standards.;This dissertation provides an EMC model of a general automotive electrical system. The purpose is to measure, model, and simulate radiated emissions of a test setup that consists of an electronic control unit ECU, harness, and a load. As one of the main advantages of EMC modeling is that once a model is developed, it can be used to evaluate the whole electrical system design to achieve EMC compliance or provide a directional improvement to obtain an optimum performance to save cost.;The numerical simulation of the physical effects is gaining significant interest in today's development process. To ensure high functional integrity of automotive systems, EMC modeling and simulation are used as a tool. The tools used for modeling purposes utilize state of the art 3D PEEC modeling method to model the electromagnetic effects of a printed circuit board PCB and a 2D line model to model the cable harness.;This dissertation also introduces a real-world case study of a radiated emission problem and a methodology to solve it without affecting the electronic controller thermal performance. The method proposed establishes a generalized relationship between the rise and fall times of the ECU's pulse width modulated signal to its associated radiated emission levels and thermal behavior. |
