Title:
ESTIMATION DEVICE, ESTIMATION METHOD AND INVERTER SYSTEM
Document Type and Number:
Japanese Patent JP2019103228
Kind Code:
A
Abstract:
To provide a technique for making easier to achieve a desired controlling performance in an inverter.SOLUTION: An estimation device 4 reads data of d-axis and q-axis current detection signals, d-axis and q-axis voltage command signals vand v, an electric angular velocity ω, and a frequency command signal ωin a motor 3 which is subjected to activation control by an inverter 2, and estimates respective estimation values of a secondary magnetic flux φ, and a primary resistance R, a secondary resistance R, a leak inductance Land a magnetic excitation inductance Lwhich are induction motor parameters. In the estimation device 4, a first Kalman filter part 5 capable of deriving the estimation value of the secondary magnetic flux φ, and a second Kalman filter part 6 capable of deriving the estimation value of the induction motor parameter w with an arithmetic operation cycle slower than the first Kalman filter part 5 are connected in parallel.SELECTED DRAWING: Figure 1
Inventors:
KUBO HAJIME
Application Number:
JP2017231316A
Publication Date:
June 24, 2019
Filing Date:
December 01, 2017
Export Citation:
Assignee:
MEIDENSHA ELECTRIC MFG CO LTD
International Classes:
H02M7/48
Attorney, Agent or Firm:
Hiromichi Kobayashi
Tomioka Kiyoshi
Uzawa Hidehisa
Tomoyuki Ota
Tomioka Kiyoshi
Uzawa Hidehisa
Tomoyuki Ota