US 12,143,038 B2
Rotary machine control device
Tetsuya Matsuyama, Nara (JP); and Yuya Tanaka, Kanagawa (JP)
Assigned to Panasonic Automotive Systems Co., Ltd., Kanagawa (JP)
Filed by Panasonic Intellectual Property Management Co., Ltd., Osaka (JP)
Filed on Dec. 1, 2022, as Appl. No. 18/073,190.
Claims priority of application No. 2021-203816 (JP), filed on Dec. 16, 2021; application No. 2021-203968 (JP), filed on Dec. 16, 2021; and application No. 2022-085836 (JP), filed on May 26, 2022.
Prior Publication US 2023/0198438 A1, Jun. 22, 2023
Int. Cl. H02P 21/30 (2016.01); H02P 21/05 (2006.01); H02P 21/14 (2016.01); H02P 21/20 (2016.01); H02P 21/22 (2016.01)
CPC H02P 21/30 (2016.02) [H02P 21/05 (2013.01); H02P 21/141 (2013.01); H02P 21/20 (2016.02); H02P 21/22 (2016.02); H02P 2207/05 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A rotary machine control device comprising:
a magnetic flux estimator that estimates a rotary machine magnetic flux that is a magnetic flux of a synchronous rotary machine;
a command amplitude generator that generates a command amplitude that is an amplitude of a command magnetic flux by executing feedback control that uses a first inner product or a second inner product, the first inner product being a product of an estimated magnetic flux that is the rotary machine magnetic flux estimated and a detection current of the synchronous rotary machine, the second inner product being a product of the detection current and an estimated magnet flux of a permanent magnet included in the synchronous rotary machine;
a magnetization characteristics determiner that determines a magnet phase that is a phase of the magnet flux based on the estimated magnetic flux and the detection current, and also determines a qm-axis magnetic flux of the estimated magnetic flux, a qm-axis current of the detection current, and a harmonic component of the magnet phase by using a dm-qm coordinate system with a dm axis representing the magnet phase and a qm axis representing a phase shifted by 90 degrees from the magnet phase;
a ripple compensation determiner that determines a ripple compensation phase by using a ripple compensation torque obtained based on the qm-axis current and the harmonic component;
a command phase determiner that determines a command magnetic flux vector phase based on (i) the ripple compensation phase and (ii) a torque command or a rotation speed command; and
a command magnetic flux generator that generates the command magnetic flux based on the command amplitude and the command magnetic flux vector phase.