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- W3200350956 abstract "The nonlinearity of the voltage source inverter (VSI) leads to the error between output voltage and reference voltage, and causes the phase current harmonics. It is necessary to compensate its influence in the fields such as parameter identification, sensorless control, and servo drives. In this article, an industrial solution for VSI nonlinear compensation method based on lookup table (LUT) is introduced. The characteristics of semiconductor devices, equivalent dead-time and influence of parasitic capacitance effects are calculated quantitatively though injecting increase and decrease current during self-commissioning process. The critical current value for parasitic capacitor and the variation of equivalent dead time are verified through different distorted voltage curves. Considering dc-link voltage variation is irresistible for industrial products, 3-D linear interpolation is adopted to compensate the variation of VSI nonlinearity under different voltage conditions. Proposed LUT method does not require VSI datasheet and complicated calculation formula during implementation. Experiments are carried out on a commercial permanent magnet synchronous motor drive system to verify the proposed LUT method." @default.
- W3200350956 created "2021-09-27" @default.
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- W3200350956 date "2022-09-01" @default.
- W3200350956 modified "2023-10-02" @default.
- W3200350956 title "An Accurate VSI Nonlinearity Modeling and Compensation Method Accounting for DC-Link Voltage Variation Based on LUT" @default.
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- W3200350956 doi "https://doi.org/10.1109/tie.2021.3111560" @default.
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