Patent ID: 11870378
Assignee: DENSO CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 0:
1. A rotary electrical machine control apparatus that controls energization of a rotary electrical machine having a plurality of winding sets, comprising:
an energization control circuit that is provided for each of the winding sets and has a switching element related to switching of energization to the winding set; and
a driver circuit that outputs a drive signal to the switching element through a signal line connected to the switching element, wherein
combinations of the winding sets and electronic components including the energization control circuit provided for each of the winding sets are regarded as systems,
in at least one system of the systems, performance of a noise smoothing component in a transmission path of the drive signal is differentiated to make noise resistance different from noise resistance in at least one other system,
each of the systems comprises two Zener diodes connected in series in opposite directions, the two Zener diodes of each of the systems being connected in parallel to the signal line of the corresponding one of the systems, and
a Zener voltage of each of the Zener diodes of the at least one system is set to be higher than a Zener voltage of each of the Zener diodes of the at least one other system.