公开(公告)号：US11522477B2

公开(公告)日：2022-12-06

申请号：US17149291

申请日：2021-01-14

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jakub Chmelar ,  Jan Scheirich ,  Martin Vagner ,  Stanislav Hasik

IPC: H01F38/18 ,  H02P7/29 ,  G01R33/07 ,  H02P6/16 ,  H02P7/28

Abstract: A contactless power supply and motor control system includes a pulse width modulator, a rotary transformer, a demodulator circuit, a motor driver, and a motor. The pulse width modulator supplies a first pulse width modulated (PWM) signal that has a duty cycle and a first amplitude. The rotary transformer receives the PWM signal. The secondary winding is rotatable relative to the primary winding and supplies a second PWM signal having the duty cycle and a second amplitude. The demodulator circuit is rotatable with the secondary winding and supplies a demodulated direct current (DC) voltage having a DC voltage amplitude. The motor driver is rotatable with the secondary winding and the demodulator circuit and controllably supplies motor current. The motor receives the motor current and rotates at a rotational speed.

公开(公告)号：US20220224263A1

公开(公告)日：2022-07-14

申请号：US17149291

申请日：2021-01-14

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Jakub Chmelar ,  Jan Scheirich ,  Martin Vagner ,  Stanislav Hasik

IPC: H02P7/29 ,  H02P7/28 ,  G01R33/07 ,  H02P6/16

Abstract: A contactless power supply and motor control system includes a pulse width modulator, a rotary transformer, a demodulator circuit, a motor driver, and a motor. The pulse width modulator supplies a first pulse width modulated (PWM) signal that has a duty cycle and a first amplitude. The rotary transformer receives the PWM signal. The secondary winding is rotatable relative to the primary winding and supplies a second PWM signal having the duty cycle and a second amplitude. The demodulator circuit is rotatable with the secondary winding and supplies a demodulated direct current (DC) voltage having a DC voltage amplitude. The motor driver is rotatable with the secondary winding and the demodulator circuit and controllably supplies motor current. The motor receives the motor current and rotates at a rotational speed.