This article describes the different types of measurement equipment required for power electronic systems
Performance of an electromechanical system is determined by the performance of individual power electronic components and switching devices. Hence, there is a need for accurate measurement of responses of power electronics, and other electrical and physical parameters. This article describes the different types of measurement equipment required for power electronic systems.
To select a measuring instrument for testing these systems, it is necessary to understand the testing parameters at various development stages. Test and measurement (T&M) equipment enable predictive and preventive inspections to minimise the risk of defects, accidents or electronic systems breakdowns. You can also derive optimum efficiency and operation for all kinds of troubleshooting.
Faster switching power electronic devices
The trend in power electronics is to push the operating frequencies higher to reduce size, weight and cost of the systems. This requires faster switching power electronic devices, such as SiC and GaN MOSFETS, and diodes. To test and characterise such devices, you need faster measurement devices like higher bandwidth oscilloscopes and power analysers.
For design and architecture stages, key factors that help select test instruments include high-frequency dynamic behaviour, static behaviour, fast inverter switching, trigger for individual waveforms and overshoot on pulses. Measurement at this stage requires mixed-signal oscilloscopes with multiple channels.
Measured parameters
Dynamic behaviour of power electronics can be measured with a scope order (oscilloscope-cum-data acquisition recorder). A data acquisition recorder handles a wide range of power measurements and captures high-resolution details with a 12- or 16-bit ADC. A space order carries out complex calculations to measure power factor, active power and harmonics using a digital signal processor.
This story is from the July 2018 edition of Electronics For You.
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This story is from the July 2018 edition of Electronics For You.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 8,500+ magazines and newspapers.
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