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Power measurement systems require self-calibrating ICs.

Google 우선 소스Published2021.02.17 16:45
The power measurement market is expected to grow 4.5% annually through 2025.
Measurement system calibration is required for accurate power measurements.
ADI mSure Calibration Without Expensive Calibration Equipment



As electricity consumption continues to rise, power metering solutions are gaining traction to reduce electricity bills and carbon emissions. As various devices and facilities become increasingly connected via the Internet, the adoption of smart cities and smart factories is accelerating, and the power metering market is also experiencing steady growth.
▲ Understanding the power consumption of devices and equipment
It is the foundation for improving product operation efficiency. [Photo = Pixabay]

According to Mordor Intelligence's report, "Power Metering Market - Growth, Trends, COVID-19 Impact, and Forecasts 2021-2026," the market is expected to grow by 4.5% annually from 2020 to 2025. The widespread adoption of contactless solutions due to COVID-19 is further accelerating this trend.

Knowing exactly how much power your devices and equipment are consuming helps individuals and organizations manage their finances. In addition, it is possible to monitor various power-related figures beyond just calculating power consumption and to detect product failures in advance.

“There has been a growing interest in power consumption recently, and there is a growing number of applications that accurately measure usage and charge for it,” said Seungkyu Lee, manager of Analog World’s technical support team. He cited streetlight controllers, electric vehicle chargers, and data center power supplies as examples.

Power measurement systems are widely adopted in homes and businesses, leading to mass production of various systems. Manager Lee stated, "Power measurement systems vary in accuracy even among mass-produced products." He added, "Clock and sensor deviations, as well as differences between components, collectively reduce accuracy, so calibration is essential to improve accuracy."
▲ ADE9153A IC with self-calibration function [Graphic = ADI]

Calibrating accuracy individually for each product is challenging. Some chipset manufacturers are incorporating automatic calibration features into their power measurement system ICs. Analog Devices (ADI)'s ADE9153A power measurement IC includes a hardware block called "mSure." mSure generates its own signals and analyzes the signals received back through the sensor.

The power measurement system measures power through the signal flow path, such as 'sensor → filter → amplifier → ADC → DSP'. mSure performs calibration accurately by utilizing the same power measurement signal path used by the system.

“The ADE9153A power measurement IC calibrates itself on the chip, so there is no need to have expensive calibration equipment separately, and there is no additional labor required for calibration,” said Vice President Seung-gyu Lee. “Therefore, there is no need to maintain the calibration equipment, and even engineers unfamiliar with the concept of calibration can easily perform the calibration work.”

The ADE9153A power measurement IC, which includes self-calibration capabilities, can measure voltage, current, real/reactive/apparent power, power factor, line frequency, phase angle, and more.

Vice President Seung-gyu Lee advised, “For single-phase systems, it would be easy to produce and manage a highly accurate power measurement system by utilizing the previously explained ADE9153A power measurement IC and the ADE7953 single-phase multi-function measurement IC with neutral current measurement function, and for three-phase systems, the ADE9000 high-performance multi-phase power quality measurement IC.”
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