For instance, one study introduced a synchronous demodulation method that utilizes self-harmonic signal injection to estimate rotor position accurately[2]. This method enhances the performance of ...

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which reduce the accuracy of rotor position estimation. To address this problem, a dual-filtering complex vector observer (DCVO) is proposed to accurately estimate the BEMF in this paper. First, a ...

Then, suddenly, they would stand utterly still in winds that themselves were moving at 150 knots (172 mph)—gusts that had the jets struggling to maintain position ... no rotor wash, or any ...

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meaning that the representation of IPMSM in the estimated rotor reference frame would be much simpler and accurate. However, because it still relied on back EMF, standstill operation was impossible.