ELECTRIC MOTOR DRIVING DEVICE AND REFRIGERATION CYCLE APPLICATION APPARATUS

WIPO Patent Application WO/2021/059350

A1

The present invention comprises an inverter (30) for supplying an AC voltage with a variable frequency and voltage value to an electric motor (7) that drives a load element the load torque of which fluctuates periodically, and a control device (100) for controlling the inverter (30), wherein the control device (100) includes: an excitation current command value generation unit (113) which generates a γ-axis current command value in a rotating coordinate system; a speed control unit (610) which generates a first δ-axis current command value in the rotating coordinate system; a limiting unit (630) which limits the first δ-axis current command value by using a limit value, and generates a second δ-axis current command value; a compensation value calculation unit (504) which generates a δ-axis current compensation value such that the output torque of the electric motor (7) follows the periodic fluctuation of the load torque; and a vibration suppression control unit (640) which generates a third δ-axis current command value by using the second δ-axis current command value, the limit value, and the δ-axis current compensation value, and controls the inverter (30) by using the γ-axis current command value and the third δ-axis current command value.

JP2001137594	ELECTRIC WASHING MACHINE
JP2003284379	SINGLE-PHASE INDUCTION MOTOR
JPH04208086	MOTOR CONTROLLER

TOYODOME SHINYA (JP)
HATAKEYAMA KAZUNORI (JP)
TAKAHASHI KENJI (JP)

PCT/JP2019/037376

April 01, 2021

September 24, 2019

Click for automatic bibliography generation  

MITSUBISHI ELECTRIC CORP (JP)

H02P21/05; H02P27/06

JP2010259133A	2010-11-11
JP6478740B2	2019-03-06
JP2013223329A	2013-10-28

TAKAMURA, Jun (JP)

View/Download PDF      PDF Help

Previous Patent: LEARNING METHOD, LEARNING PROGRAM, AND LEARNING DEVICE

Next Patent: FUEL CELL SYSTEM AND CONTROL METHOD FOR FUEL CELL SYSTEM