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A Progressive Way to Integrate Current Measurement into Modern Power Electronic Systems

Modern inverter applications and sophisticated control schemes demand that the current flowing through the load is known exactly. Different measurement strategies can be utilized, each providing specific advantages and disadvantages. Several possibilities are discussed in the paper presented and examined in detail with a focus on mechanical, thermal and electrical aspects. Of special interest is the possibility of higher integration and a solution is presented to achieve high accuracy current measurement with digital output and reinforced insulation. Current sensors are an inherent part of modern inverter technology and need to fulfill different demands depending on the application. Besides costs the space needed, the mounting technology utilized and the temperature range along with accuracy demands and response time are factors that influence the decision as to what sensor is to be used.

• 309.05 KB
• Jun 06, 2008