CONTROL DEVICE, POWER CONVERSION DEVICE, AIR CONDITIONING SYSTEM, CONTROL METHOD, AND PROGRAM

WIPO Patent Application WO/2019/198411

A1

This control device for controlling a motor is provided with: a rotation information calculation unit; an average torque calculation unit; a normalized torque pattern storage unit; an allowable rotational speed fluctuation range storage unit for storing an allowable rotational speed fluctuation range of the motor defined as a function of the rotational speed of the motor; a modulation factor determination unit for determining a modulation factor so that the rotational speed fluctuation range of the motor becomes less than or equal to the allowable rotational speed fluctuation range; a compensated torque calculation unit for calculating a compensated torque pattern by multiplying the product of an average torque and a normalized torque pattern by the modulation factor; and a torque control unit for controlling the supply of motor current to the motor on the basis of the average torque and the compensated torque pattern. The modulation factor determination unit also outputs a protective rotational speed command for changing the rotational speed of the motor so that the rotational speed fluctuation range of the motor becomes less than or equal to the allowable rotational speed fluctuation range.

KAWASHIMA KAZUMASA (JP)
SATO TAKESHI (JP)
AIBA KENICHI (JP)
WATANABE TAKAMASA (JP)
SHIMIZU KENJI (JP)
SUMITO KIYOTAKA (JP)

PCT/JP2019/010576

October 17, 2019

March 14, 2019

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MITSUBISHI HEAVY IND THERMAL SYSTEMS LTD (JP)

H02P6/10; H02M7/48; H02P6/18; H02P21/05; H02P27/06

JP2008245506A	2008-10-09
JP2018057085A	2018-04-05
JP2010130844A	2010-06-10
JP2001295769A	2001-10-26

MATSUNUMA Yasushi et al. (JP)

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