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Design of a Novel Back-emf Filter for Sensor-less BLDC

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  • Key Words:Back Emf; Filter circuit; Sensorless BLDC

  • Abstract:In this paper a novel filter structure which can be used to find the zero point of the sensorless back-emf of BLDC is proposed. The back-emf amplifier circuit applied this structure is a kind of analog and digital mixed type. It can improved sensorless performance under low speed situation greatly. At last the production and experiments were carried out based on the 100W BLDC driver system. The applicability of the proposed structure was also verified

  • Volume:654

  • Issue:

  • Translation or Not:no

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