Design for EMI compliance for a compact 3000 W system

Low levels of electromagnetic interference emissions of power equipment are mandatory to avoid interactions between the power system and other telecommunication equipment located in close proximity. No malfunctions due to EMI are tolerable between different types of equipment. The power system should be designed such that it is immune to the emission of other equipment, Also the power system EMI noise must be below the acceptable limit of other type of telecommunication equipment. The stringent Class B requirements of emission of FCC and CISPR are replacing Class A as the standard to be achieved for a telecommunication power system. The paper describes all the design philosophy for EMI compliance of a typical compact power system. An example of a 3000 W power system that meets CISPR22 Class B and FCC Class B is demonstrated.