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Patent Agency Ranking
公开(公告)号：US11831231B2
公开(公告)日：2023-11-28
申请号：US17182612
申请日：2021-02-23
Applicant: Danfoss Editron Oy
Inventor： Antti Summanen , Antti Tarkiainen
CPC classification number: H02M1/00 , G05B6/02 , H02J13/00002 , H02M1/0025
Abstract: A control device (101) for controlling a power converter (109) is configured to form a frequency droop value based on electric power supplied by the power converter to an alternating current system, decrease a frequency control value by the frequency droop value, form a power control value based on a target value of the electric power, increase the frequency control value by the power control value, and supply the frequency control value to the power converter to control alternating voltage frequency of the power converter. The electric power is driven to a value at which a combined effect of the frequency droop value and the power control value makes the alternating voltage frequency of the power converter to be the same as operating frequency of the alternating current system. Thus, the electric power can be controlled by changing the power control value.
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公开(公告)号：US20210265906A1
公开(公告)日：2021-08-26
申请号：US17182612
申请日：2021-02-23
Applicant: Danfoss Editron Oy
Inventor： Antti Summanen , Antti Tarkiainen
Abstract: A control device (101) for controlling a power converter (109) is configured to form a frequency droop value based on electric power supplied by the power converter to an alternating current system, decrease a frequency control value by the frequency droop value, form a power control value based on a target value of the electric power, increase the frequency control value by the power control value, and supply the frequency control value to the power converter to control alternating voltage frequency of the power converter. The electric power is driven to a value at which a combined effect of the frequency droop value and the power control value makes the alternating voltage frequency of the power converter to be the same as operating frequency of the alternating current system. Thus, the electric power can be controlled by changing the power control value.
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公开(公告)号：US11429074B2
公开(公告)日：2022-08-30
申请号：US16963966
申请日：2019-01-21
Applicant: Danfoss Editron Oy
Inventor： Antti Tarkiainen , Risto Tiainen , Matti Iskanius
IPC: G05B19/042
Abstract: A device-system comprises parallel operating devices (105-107) for driving an operating quantity towards a target value, and a control system for controlling each device at least partly based on a device-specific integral term relating to a time integral of a device-specific error signal that is indicative of a deviation of the operating quantity from the target value. The control system comprises a stabilizing system that computes an arithmetic average of the device-specific integral terms and corrects the device-specific integral terms towards the computed arithmetic average. The correction of the device-specific integral terms makes it possible to avoid unwanted drifts in the device-specific integral terms in a situation where there are differences between the device-specific error signals. The devices can be peers to each other and thus redundancy is achieved because one device can be removed from or added to the device-system without actions from the other devices.
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公开(公告)号：US11146194B2
公开(公告)日：2021-10-12
申请号：US16793229
申请日：2020-02-18
Applicant: Danfoss Editron Oy
Inventor： Antti Tarkiainen , Antti Summanen
Abstract: An electric system of an electromechanical power transmission chain is provided that includes a first capacitive circuit, converter equipment between the first capacitive circuit and an electric machine, a second capacitive circuit, and a direct voltage converter between the first and second capacitive circuits. The electromechanical power transmission chain is a parallel transmission chain where the electric machine is mechanically connected to a combustion engine and to one or more actuators. The electric system includes a control system for controlling the direct voltage converter in response to changes in a first direct voltage of the first capacitive circuit and for controlling the converter equipment in response to changes in a second direct voltage of the second capacitive circuit. The first direct voltage is kept on a predetermined voltage range whereas the second direct voltage is allowed to fluctuate in order to respond to peak power needs.
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公开(公告)号：US20210041842A1
公开(公告)日：2021-02-11
申请号：US16963966
申请日：2019-01-21
Applicant: Danfoss Editron Oy
Inventor： Antti Tarkiainen , Risto Tiainen , Matti Iskanius
IPC: G05B19/042
Abstract: A device-system comprises parallel operating devices (105-107) for driving an operating quantity towards a target value, and a control system for controlling each device at least partly based on a device-specific integral term relating to a time integral of a device-specific error signal that is indicative of a deviation of the operating quantity from the target value. The control system comprises a stabilizing system that computes an arithmetic average of the device-specific integral terms and corrects the device-specific integral terms towards the computed arithmetic average. The correction of the device-specific integral terms makes it possible to avoid unwanted drifts in the device-specific integral terms in a situation where there are differences between the device-specific error signals. The devices can be peers to each other and thus redundancy is achieved because one device can be removed from or added to the device-system without actions from the other devices.
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