Title:
ELECTRIC MOTOR SYSTEM AND TURBO COMPRESSOR HAVING THE SAME
Document Type and Number:
Japanese Patent JP2021090256
Kind Code:
A
Abstract:
To enhance a braking brake of an electric motor system at low cost.SOLUTION: A plurality of electromagnetic apparatuses (50, 60, 70, 80, 90) provided in an electric motor system (2) include at least one electric motor (60, 70, 90) for rotationally driving a shaft (30). The plurality of electromagnetic apparatuses (50, 60, 70, 80, 90) are connected to a common DC bus (120). The electric motor system (2) includes a controller (130) for increasing power consumption to a level higher than average power consumption during a predetermined time period before switching in at least one of the electromagnetic apparatuses (50, 60, 70, 80, 90) other than the same electric motor (60, 70, 90) after switching the electric motor (60, 70, 90) from a power running state to a regenerative state.SELECTED DRAWING: Figure 3
Inventors:
ONO TAKAAKI
IRINO YUSUKE
IRINO YUSUKE
Application Number:
JP2019218666A
Publication Date:
June 10, 2021
Filing Date:
December 03, 2019
Export Citation:
Assignee:
DAIKIN IND LTD
International Classes:
H02P5/46; F04D27/02; H02K7/09; H02K7/14
Attorney, Agent or Firm:
Maeda patent office