公开(公告)号：US20240061029A1

公开(公告)日：2024-02-22

申请号：US18488648

申请日：2023-10-17

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Petri J. Maki-Ontto ,  Lauri Juhani Salmia ,  Aapo Aapro

IPC: G01R27/16 ,  G01R31/34

CPC classification number: G01R27/16 ,  G01R31/34

Abstract: The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).

公开(公告)号：US20220229100A1

公开(公告)日：2022-07-21

申请号：US17712466

申请日：2022-04-04

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Petri J. Maki-Ontto ,  Lauri Juhani Salmia ,  Aapo Aapro

IPC: G01R27/16 ,  G01R31/34

Abstract: The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).

公开(公告)号：US11293960B2

公开(公告)日：2022-04-05

申请号：US16777476

申请日：2020-01-30

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Petri J. Maki-Ontto ,  Lauri Juhani Salmia ,  Aapo Aapro

IPC: G01R27/16 ,  G01R31/34

Abstract: The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).

公开(公告)号：US11828779B2

公开(公告)日：2023-11-28

申请号：US17712466

申请日：2022-04-04

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Petri J. Maki-Ontto ,  Lauri Juhani Salmia ,  Aapo Aapro

IPC: G01R27/16 ,  G01R31/34

CPC classification number: G01R27/16 ,  G01R31/34

Abstract: The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).

公开(公告)号：US20200341040A1

公开(公告)日：2020-10-29

申请号：US16777476

申请日：2020-01-30

Applicant: Ingersoll-Rand Industrial U.S., Inc.

Inventor： Petri J. Maki-Ontto ,  Lauri Juhani Salmia ,  Aapo Aapro

IPC: G01R27/16 ,  G01R31/34

Abstract: The present application relates to apparatus (400, 500) for measuring an impedance of an electrical load (300) that is configured to be coupled to a controlled current source (200). The apparatus (400, 500) comprises a first coupling node (402) configured to be coupled to a first terminal (302) of the load (300) and a second coupling node (404) configured to be coupled to a second terminal (304) of the load (300). The apparatus further comprises a transformer (406) having a primary winding (408) and a secondary winding (410) and a capacitance (412) connected in series between a first terminal (414) of the secondary winding (410) and the first coupling node (402). A second terminal (416) of the secondary winding (410) is connected to the second coupling node (404). The apparatus further comprises a processing unit (424) is configured to control an excitation signal that is applied to the primary winding (408) so as to cause a variation, corresponding to the excitation signal, in an input current of the load (300), measure the input current and an input voltage of the load (300), and, based on the measured input current and input voltage, determining the impedance of the load (300).