Abstract:The position sensorless Permanent Magnet Synchronous Motor (PMSM) is
widely applied in the field of high reliability, and its driver, the
inverter is controlled by closed loop feedback with the three-phase
current. For medium and high power PMSM, both safety isolation and
detection accuracy of measuring current are extremely significant. This
paper presents a method of using Current Transformer (CT) with center
taps to measure the high-frequency switch current and of an algorithm to
reconstruct the low-frequen… Show more
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