Title:
VARIABLE SPEED ACCELERATOR AND METHOD FOR CONTROLLING VARIABLE SPEED ACCELERATOR
Document Type and Number:
WIPO Patent Application WO/2017/216899
Kind Code:
A1
Abstract:
A variable speed accelerator equipped with an electric drive device for generating rotational drive force, and a planetary gear transmission for changing the speed of the rotational drive force generated by the electric drive device and transmitting the same to a drive target, wherein: the sun gear shaft is an output shaft connected to the drive target, the internal gear carrier shaft is a constant speed input shaft, and the planetary gear carrier shaft is a variable speed input shaft; and the electric drive device has a constant speed motor having a constant speed rotor for rotating the constant speed input shaft of the transmission in a second direction, and a variable speed motor that has a variable speed rotor connected to the variable speed input shaft of the transmission, and rotates the output shaft at maximum rotation speed by rotating the variable speed rotor at maximum rotation speed in a first direction opposite the second direction. The variable speed accelerator is further equipped with a rotation speed control device for controlling the rotation speed of the variable speed motor by transmitting a speed command to the variable speed motor, a torque measurement device for measuring the torque of the variable speed motor, and a control device which, when the direction of the torque of the variable speed motor is the second direction, maintains the command value of the speed command or reduces the rate of change in the command value of the speed command to a slower rate than the rate of change in the command value of the speed command at that point in time.
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Inventors:
OKAMOTO YOSHIYUKI (JP)
NAKASHIMA MASAHIRO (JP)
NAKASHIMA MASAHIRO (JP)
Application Number:
PCT/JP2016/067770
Publication Date:
December 21, 2017
Filing Date:
June 15, 2016
Export Citation:
Assignee:
MITSUBISHI HEAVY IND COMPRESSOR CORP (JP)
International Classes:
F16H3/72
Domestic Patent References:
| WO2016010146A1 | 2016-01-21 |
Foreign References:
| JPH10110791A | 1998-04-28 |
Attorney, Agent or Firm:
MORI Ryuichirou et al. (JP)
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