University of Twente Student Theses


Comparing Current Sensors for Power Measurement of Linear and Non-Linear Appliances

Waanders, Stefanie (2023) Comparing Current Sensors for Power Measurement of Linear and Non-Linear Appliances.

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Abstract:Previously, households predominantly relied on linear equipment. However, in the present day, there is a growing trend towards using equipment with non-linear behaviour. The utilization of such equipment can result in conducted electromagnetic interference, which in turn may cause inaccurate readings in energy meters. The current waveforms that cause interference are pulsed currents with a short pulse duration, fast rising slope, and large crest factor. Recent studies have shown that there are a significant amount of cases in which the static meter show incorrect measurements. In order to verify if household equipment is causing measurements errors a low-cost reference sensor is needed. For this purpose, four different current sensing techniques are discussed, compared and measured under linear and non-linear circumstances. The best low-cost sensor for linear situations was the KIWI Electronics SF-SEN-11005 (Current transformer). And the best low-cost sensor for non-linear situations was the YHDC HSTS016L (Hall effect sensor). For the current transformer the deviation in non-linear measurements were due to droop. The Hall effect sensor showed deviations between 2.5% and 6% across all measurements. This leads to the conclusion that the hall effect sensor that was used had a too low accuracy in the range that was measured.
Item Type:Essay (Bachelor)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:53 electrotechnology
Programme:Electrical Engineering BSc (56953)
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