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Patent Searching and Data


Title:
MOTOR DRIVE CONTROL DEVICE AND MOTOR DRIVE CONTROL METHOD
Document Type and Number:
Japanese Patent JP2019149916
Kind Code:
A
Abstract:
To reduce the burden on an electronic component that carries a no-power regenerative braking function when the motor load increases in the absence of power supply to a motor.SOLUTION: A motor drive control device 1 according an embodiment includes an inter-phase short-circuit unit 40 that is connected to at least two of three-phase coils Lu, Lv, and Lw, and short-circuits at least one of three sets of the coils Lu, Lv, and Lw, two of which have different combination from each other in accordance with a short-circuit signal, a short circuit signal output unit 50 that is connected between the coil Lw and the inter-phase short-circuit unit 40 and outputs a short circuit signal to the inter-phase short-circuit unit 40 when a braking control signal is input, and a protective operation unit 60 that stops the short circuit by the inter-phase short-circuit unit 40 on the basis of the voltage state of the one of the three-phase coils Lu, Lv, and Lw.SELECTED DRAWING: Figure 1

Inventors:
YAMAMOTO MASANORI
KATO HIROYUKI
Application Number:
JP2018035100A
Publication Date:
September 05, 2019
Filing Date:
February 28, 2018
Export Citation:
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Assignee:
MINEBEAMITSUMI INC
International Classes:
H02P3/22
Attorney, Agent or Firm:
Toranomon Intellectual Property Office