Energy metering IC provides high accuracy harmonic analysis for power quality monitoring
September 15, 2011 // Paul Buckley
Analog Devices, Inc., has introduced an energy metering IC (integrated circuit) that offers real-time harmonic analysis for energy meters and power quality monitoring equipment. Designed for polyphase meters, the ADE7880 energy metering IC offers complete harmonic analysis, including magnitude and phase information, and delivers better than one percent accuracy over a dynamic range of 2000:1 up to the 63 rd harmonic.
The new device is the first to use ADI’s proprietary ARTM (adaptive real-time monitoring) harmonic analysis technology, which eliminates the need for custom development of sophisticated digital signal processing and reduces the demands on the system microcontroller.
The ADE7880 Energy Metering IC is pin compatible with the popular ADE78xx high-accuracy energy metering IC devices designed for three-phase configurations. ARTM automatically tracks changes in the fundamental frequency, which eliminates any effects of frequency drift on accuracy of the measurements.
For each harmonic, the device computes the voltage and current rms, power factor, and active, reactive and apparent powers. The IC also computes THD+N (total harmonic distortion plus noise) ratio as well as harmonic distortion as a ratio of the fundamental.
The IC delivers active and reactive energy accuracy better than 0.2% over a dynamic range of 5000:1. Accuracy better than 0.1% is achieved over a dynamic range of 1000:1 with gain calibration only.
The device incorporates seven sigma-delta ADCs (analog-to-digital converters), a digital integrator, voltage reference and all metrology signal processing. Suitable for class 0.2 meters.
The ADE7880 energy metering IC is available now packaged in a 40-lead LFCSP and is priced $9.47 each in 1,000 quantities.
More information about the ADE7880 energy metering IC product at
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Internet of Things (IoT) manufacturer Ciseco has launched the Raspberry Pi ‘Wireless Inventors Kit’ (RasWIK), featuring 88 pieces to provide everything a Pi owner needs to follow a series of step-by-step projects or to create their own wireless devices, without the need for configuration or even writing code.
RasWIK has been designed to be highly accessible, demystifying the dark art of wireless and enabling anyone with basic computing skills to begin building wireless devices with a Raspberry Pi. You can create anything from a simple traffic light, to a battery monitor, or even a temperature gauge that sends data to the Xively IoT cloud so billions can access the data.This month, Ciseco is giving away twelve Raspberry Pi Wireless Inventors kits, worth £49.99 each for EETimes Europe's readers to win.
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December 15, 2011 | Texas instruments | 222901974
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