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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Sliding Mode Observer Driver IC Integrated Gate Driver for Sensorless Speed Control of Wide Power Range of PMSMs

  • Oh, Jimin (Information & Communications Core Technology Research Laboratory, ETRI) ;
  • Kim, Minki (Information & Communications Core Technology Research Laboratory, ETRI) ;
  • Heo, Sewan (IT Convergence Technology Research Laboratory, ETRI) ;
  • Suk, Jung-Hee (Information & Communications Core Technology Research Laboratory, ETRI) ;
  • Yang, Yil Suk (Information & Communications Core Technology Research Laboratory, ETRI) ;
  • Park, Ki-Tae (Iron Device Corporation) ;
  • Kim, Jinsung (Iron Device Corporation)
  • Received : 2015.04.27
  • Accepted : 2015.08.10
  • Published : 2015.12.01
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Abstract

This work proposes a highly efficient sensorless motor driver chip for various permanent-magnet synchronous motors (PMSMs) in a wide power range. The motor driver chip is composed of two important parts. The digital part is a sensorless controller consisting mainly of an angle estimation block and a speed control block. The analog part consists of a gate driver, which is able to sense the phase current of a motor. The sensorless algorithms adapted in this paper include a sliding mode observer (SMO) method that has high robust characteristics regarding parameter variations of PMSMs. Fabricated SMO chips detect back electromotive force signals. Furthermore, motor current-sensing blocks are included with a 10-bit successive approximation analog-to-digital converter and various gain current amplifiers for proper sensorless operations. Through a fabricated SMO chip, we were able to demonstrate rated powers of 32 W, 200 W, and 1,500 W.

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References

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