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公开(公告)号：US11289256B2
公开(公告)日：2022-03-29
申请号：US16585135
申请日：2019-09-27
Applicant: ABB Schweiz AG
Inventor： Marco Testa , Roberto Usai
Abstract: A coil actuator for low and medium voltage applications including: a coil electromagnet having a single coil winding and a movable member; and a power and control unit including: a power circuit operatively coupled with the coil electromagnet, the power circuit including input terminals for receiving an input voltage and an intermediate node, the electromagnet being electrically connected with the input terminal and the intermediate node, the power circuit further including a discharge circuit, which is electrically connected with the first input terminal and the intermediate node in parallel with the coil winding, and a switch circuit, which is electrically connected with the intermediate node and the second input terminal, the switch circuit including at least a power switch; a controller operatively coupled with the power circuit to drive the at least a power switch to control of an input current circulating through the power circuit, the controller being adapted to perform a PWM control of the input current to operate the coil electromagnet; a power supply circuit adapted to feed the controller. The power supply circuit is electrically connected with the intermediate node and the controller.
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公开(公告)号：US11652358B2
公开(公告)日：2023-05-16
申请号：US16717202
申请日：2019-12-17
Applicant: ABB Schweiz AG
Inventor： Roberto Usai , Marco Testa , Yaser Khalifa , Andrea Bianco
CPC classification number: H02J9/06 , H02J7/00 , H02J7/0029 , H02J7/00302 , H02J9/00 , H02J9/061
Abstract: An UPS device for electric power distribution installations, the UPS device including: first electric terminals for electrical connection with an electric load to be fed by the UPS device; second electric terminals for electrical connection with a power supply source adapted to feed the UPS device; third electric terminals for electrical connection with a back-up unit adapted to feed the UPS device, when the power supply source is not available, the back-up unit having one or more replaceable batteries; a power conversion stage electrically connectable with the first, second and third electric terminals, the power conversion stage being adapted to receive a power supply voltage from the power supply source or a back-up voltage from the back-up unit, when the power supply source is not available, and being adapted to provide an adjustable load voltage to the electric load; and an interface stage to electrically couple or decouple the back-up unit with or from the power conversion stage. The interface stage includes a feeding circuit to temporary feed the controller during a transient time interval following a replacement of the batteries of the back-unit.
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公开(公告)号：US11270825B2
公开(公告)日：2022-03-08
申请号：US16559830
申请日：2019-09-04
Applicant: ABB Schweiz AG
Inventor： Marco Testa , Roberto Usai
Abstract: A coil actuator for low and medium voltage applications comprising a coil electromagnet provided with a single coil winding and a movable anchor and a power and control unit comprising: a power circuit operatively coupled with said coil electromagnet, said power circuit comprising input terminals, at which said power circuit receives an input voltage; a PWM controller operatively coupled with said power circuit, said PWM controller being adapted to control an input current flowing through said power circuit to obtain and maintain an average operating level selected an excitation current feeding said coil electromagnet. Said PWM controller is adapted to set a plurality of reference values for said input current to control said input current, each reference value for said input current being selected among said plurality of reference values depending on the behavior of said input voltage.
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公开(公告)号：US20200075212A1
公开(公告)日：2020-03-05
申请号：US16559830
申请日：2019-09-04
Applicant: ABB Schweiz AG
Inventor： Marco Testa , Roberto Usai
Abstract: A coil actuator for low and medium voltage applications including a coil electromagnet with a single coil winding and a movable anchor and a power and control unit including: a power circuit operatively coupled with the coil electromagnet, the power circuit including input terminals, at which the power circuit receives an input voltage; a PWM controller operatively coupled with the power circuit, the PWM controller being adapted to control an input current flowing through the power circuit to obtain and maintain an average operating level selected an excitation current feeding the coil electromagnet. The PWM controller is adapted to set a plurality of reference values for the input current to control the input current, each reference value for the input current selected among the plurality of reference values depending on the behavior of the input voltage.
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