Compensation of current measurement errors due to sensor scale error and non‑simultaneous sampling error for three‑phase inverter applications

Mi-Seong Kim; Da-Hye Park; Wook-Jin Lee

Compensation of current measurement errors due to sensor scale error and non‑simultaneous sampling error for three‑phase inverter applications

Mi-Seong Kim

Da-Hye Park

Wook-Jin Lee

Vol. 22, No. 1, pp. 31-39, Jan. 2022

10.1007/s43236-021-00333-6

Current measurement

scaling error

Non-simultaneous sampling error

Current error compensation

Current sampling

Abstract

In this paper, simple compensation methods for the current measurement errors due to the scaling gain error of the current sensor and non-simultaneous sampling error are proposed for three-phase inverter applications. The scaling error can be compensated offline simply by turning off one phase of the inverter. The error compensation methods for the non-simultaneous sampling error are proposed according to the number of sample and hold (S/H) circuits in the current sensor and analogto-digital converters (ADCs). When a low-cost ADC with a few S/H circuits is used, it can be divided into three cases and compensated through a simple calculation formula. The effectiveness of the proposed compensation methods is verified through simulations and experiments.

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Cite this article

[IEEE Style]

M. Kim, D. Park, W. Lee, "Compensation of current measurement errors due to sensor scale error and non‑simultaneous sampling error for three‑phase inverter applications," Journal of Power Electronics, vol. 22, no. 1, pp. 31-39, 2022. DOI: 10.1007/s43236-021-00333-6.

[ACM Style]

Mi-Seong Kim, Da-Hye Park, and Wook-Jin Lee. 2022. Compensation of current measurement errors due to sensor scale error and non‑simultaneous sampling error for three‑phase inverter applications. Journal of Power Electronics, 22, 1, (2022), 31-39. DOI: 10.1007/s43236-021-00333-6.