Electro-Magnetic Compatibility (EMC) and High Frequency (HF) electric issues are usually neglected in the design of power converters for electric drives until the experimental evaluation of prototypes is started. At this time the original design and layout of the system are iteratively modified in order to prevent dangerous overvoltages and comply with international standards. A more effective and less time consuming design approach could be adopted by predicting EMI and HF phenomena at an early stage, by computer simulation. However, such a design approach requires the availability of suitable HF mathematical models of the drive. This paper deals with the development of HF models of the main components of a standard industrial electric motor drive. Suitable mathematical structures and parameter identification procedures are proposed to build up HF models of the power converter, the cables and the motor. The proposed models are exploited to evaluate the performance of different HF filters and cable terminators by simulations. Then, experimental and simulated results are compared to verify the proposed approach.
HF Models of Electrical Drives for Test and Design of EMC Filters
DE CARO, SALVATORE;TESTA, Antonio
2004-01-01
Abstract
Electro-Magnetic Compatibility (EMC) and High Frequency (HF) electric issues are usually neglected in the design of power converters for electric drives until the experimental evaluation of prototypes is started. At this time the original design and layout of the system are iteratively modified in order to prevent dangerous overvoltages and comply with international standards. A more effective and less time consuming design approach could be adopted by predicting EMI and HF phenomena at an early stage, by computer simulation. However, such a design approach requires the availability of suitable HF mathematical models of the drive. This paper deals with the development of HF models of the main components of a standard industrial electric motor drive. Suitable mathematical structures and parameter identification procedures are proposed to build up HF models of the power converter, the cables and the motor. The proposed models are exploited to evaluate the performance of different HF filters and cable terminators by simulations. Then, experimental and simulated results are compared to verify the proposed approach.Pubblicazioni consigliate
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