Analytical Model and Characteristics of Current-Observer-Based Induction Motor Speed-Sensorless Vector Control System Taking into Account Iron Loss

Tsuji, Mineo; Xu, Fujin; Tsuruda, Yasutaka; Hamasaki, Shin-ichi

doi:10.1541/ieejias.131.768

Cited by 3 publications

(2 citation statements)

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“…The mean output current value at the stationary state was 924 mA, which deviates from the theoretical value of 865 mA obtained by Eq. (7). This is attributed to T away of 6.5 μs, which fails to meet the conditions of Eq.…”

Section: T Away Conditions For Acquiring Mean Value In Noiseless Sampmentioning

confidence: 97%

“…In a typical switching noise suppression scheme, a low-pass filter is connected to the current-detecting section for eliminating the high-frequency component [7]. In this process, it has been reported that a phase lag occurs at some filter design values, which negatively affects the controllability and exert influence on the circuit operation [8,9].…”

Section: Introductionmentioning

confidence: 99%

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Current Control of a Single‐Phase Inverter by Applying a Multisampling Method

Takeuchi

Wada

2016

Elect Comm in Japan

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SUMMARY In digitally controlled circuits for power electronic circuits, sampling data are important because the digital control circuit is operated on the basis of these data. If the sampled values have been affected by switching noise from the power circuit, the control stability of the circuit would be disturbed. This paper proposes a noiseless sampling method that can sample a value without being affected by the switching noise. The synchronous sampling method may be affected by the switching noise depending on the duty ratio of the circuit. The noiseless sampling method does not obtain data immediately after turn‐on and turn‐off switching. The control circuit can avoid the switching noise by using noiseless sampling, which leads to a disturbance in the control circuit and enhances the robustness of the circuit when applying the multisampling method. Experimental results are presented to verify that the current control of the proposed sampling method is not disturbed by the switching noise even in the absence of a noise filter.

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Section: T Away Conditions For Acquiring Mean Value In Noiseless Sampmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%