Accurate phase current measurement

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IPC-SERIES: DELTA-SIGMA MODULATION IN COMBINATION WITH SHUNT-BASED CURRENT SENSING

CHALLENGE
Commercial wind-generation, large electric machine drives, and solar array (PV) applications rely on frequency converters and inverters, which need to reliably communicate their operational status in real-time - without any noise from EMI in the output signal. Therefore a high frequent and yet reliable and accurate current sensing is required.

SOLUTION
Phase current sensors of the IPC-SERIES can be used for the input and output-side current measurement in frequency converters and inverters. Customers receive a calibrated and digitized 1-bit data stream output signal on a TTL or LVDS interface, which includes the measurement information. As the AD conversion is done directly in the module the risk of EMI disturbance is minimal. Customers use Field Programmable Gate Arrays (FPGA) to optimize between sync filter type, over sampling rate (OSR) and resolution and thus differentiate themselves from the competition. Since the measurement modules of the IPC-SERIES are calibrated over the temperature range in the production process, users receive a temperature-independent accuracy with a particularly low offset.

APPLICATION
Accurate phase current measurement without the concern of electro magnetic interference

Isabellenhütte USA 
Isabellenhütte USA (formerly Isotek Corporation) is a wholly owned subsidiary of Isabellenhütte Heusler GmbH KG. 
Formed in 1989, Isabellenhütte USA is a leading supplier of precision current sensing and high power resistors, thermoelectric and resistance alloys, and precision measurement systems. Located in Swansea MA, Isabellenhütte USA has developed an industry-wide reputation for providing high-quality products and unparalleled customer support.

Backed by hundreds of decades of manufacturing and engineering expertise and a representative network that spans all of North America, our mission is to provide superior resistive solutions into the automotive, industrial and aerospace industries. Isotek strives to remain at the ready with samples of standard products and unmatched application support for technically demanding custom product development.