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1. 发明授权

US11538613B2 Inductor and method for producing the same 有权
公开(公告)号：US11538613B2
公开(公告)日：2022-12-27
申请号：US16609637
申请日：2017-05-24
申请人： Vacon Oy
发明人： Nicklas Södö
IPC分类号： H01F27/28 , H01F17/06 , H01F27/08 , H01F27/255 , H01F41/04
摘要： The disclosure provides an inductor and a method for producing the same. The inductor includes a first core made of a first magnetic material; at least two windings, configured to be twisted with each other and embedded within the first core, each winding having a pair of terminals extending out of the first core.

2. 发明授权

US11183836B2 Safety design for DC link capacitors 有权
公开(公告)号：US11183836B2
公开(公告)日：2021-11-23
申请号：US16424980
申请日：2019-05-29
申请人： Vacon Oy
发明人： Tommi Keski-Kujala , Ari Ristimäki , Pekka Hemminki , Jani Matti Perkiö
IPC分类号： H02H7/16 , H02H3/02 , H02H3/28 , H02M1/32
摘要： An electronic circuit includes: a first series-connection of DC link capacitors (CA1, . . . , CAm) and a second series-connection of DC link capacitors (CB1, . . . , CBn) connected in parallel between DC bus bars (DC+, DC−), wherein the first series has a first node (A) between the DC link capacitors thereof and the second series has a second node (B) between the DC link capacitors thereof; and a short-circuit module (301; 401, 407) configured to receive a voltage difference (UM) between the first node and the second node and to cause the DC bus bars short circuited in response to the received voltage difference being greater than a predetermined threshold.

3. 发明授权

US11159099B2 Method for pulse-width modulation of a power converter and a power converter 有权
公开(公告)号：US11159099B2
公开(公告)日：2021-10-26
申请号：US16975179
申请日：2018-03-21
申请人： Vacon Oy
发明人： Nicklas Södö , Oskari Leppäaho , Simo Häkli
IPC分类号： H02M1/12 , H02M7/5387
摘要： A method for pulse-width modulation of a power converter (10) and a power converter (10) are presented. The method comprises determining (110) a modulation index, selecting (120), based on the modulation index, a modulation technique from a plurality of pre-deter-mined modulation techniques, and modulating (130) an output (16) of the power converter (10) by utilizing the selected modulation technique.

4. 发明授权

US11022651B2 Arrangement and method for a safe turn off 有权
公开(公告)号：US11022651B2
公开(公告)日：2021-06-01
申请号：US16486371
申请日：2017-03-02
申请人： Vacon Oy
发明人： Jani Perkiö , Antti Sorri , Pekka Hemminki
IPC分类号： G01R31/327 , G01R31/40 , G05B9/02
摘要： A safety circuit coupled between a first direct current (DC) circuit and a second DC circuit, wherein the first DC circuit supplies power to the second DC circuit. The safety circuit comprises a first series connection between positive poles of the first and second DC circuits (the first series connection comprising a first diode, a second diode and a first controllable switch), a second series connection between negative poles of the first and second DC circuits (the second series connection comprising a third diode, a fourth diode and a second controllable switch), a first energy storage device (coupled between the positive pole of the second DC circuit and the first terminal of the second controllable switch), and a second energy storage device (coupled between the negative pole of the second DC circuit and the first terminal of the first controllable switch). The safety circuit further comprises a first feedback circuit for indicating an active state of the first controllable switch and a second feedback circuit for indicating an active state of the second controllable switch.

5. 发明授权

US10944346B2 Device and a method for estimating inductances of an electric machine 有权
公开(公告)号：US10944346B2
公开(公告)日：2021-03-09
申请号：US16360204
申请日：2019-03-21
申请人： Vacon Oy
发明人： Arto Sankala
IPC分类号： H02P21/14 , H02P21/06 , H02P21/18 , H02P27/08 , H02P21/22 , H02P25/022 , G01R27/26 , H02P25/092
摘要： A device for estimating inductances of an electric machine having a salient-pole rotor is presented. The device comprises a processing system that controls stator voltages to constitute a balanced multi-phase alternating voltage when the rotor is stationary. The processing system estimates a position of the rotor based on a negative sequence component of stator currents. To estimate the quadrature-axis inductance, the processing system controls direct-axis current to be direct current and quadrature-axis voltage to be alternating voltage. The quadrature-axis inductance is estimated based on the quadrature-axis alternating voltage and on quadrature-axis alternating current. To estimate the direct-axis inductance, the processing system controls direct-axis voltage to be alternating voltage and the quadrature-axis voltage to be zero. The direct-axis inductance is estimated based on the direct-axis alternating voltage and on direct-axis alternating current.

6. 发明授权

US10720772B2 Filtering arrangement having a three phase LCL power supply common mode filter 有权
公开(公告)号：US10720772B2
公开(公告)日：2020-07-21
申请号：US15777936
申请日：2015-12-17
申请人： Vacon Oy
发明人： Nicklas Sodo
IPC分类号： H02J3/24 , H02M1/12 , H02M5/458 , H02M3/04 , H02M7/5387
摘要： A filtering arrangement for a system including a power electronics device and an external power storage/discharge element, which power electronics device includes a power module and a three-phase filter between the AC power terminals of the power module and the supplying AC power grid, and which power module includes a DC intermediate power bus, and which three-phase filter between the AC power terminals and the supplying AC power grid includes two three-phase inductors, and which external power storage/discharge element has two DC power terminals which are connected to the DC intermediate power bus of the power electronics device. The filtering arrangement includes a common mode inductor which is connected between the DC power terminals of the external power storage/discharge element and the terminals of the DC intermediate power bus of the power module.

7. 发明授权

US10707777B2 Control of parallel connected power devices 有权
公开(公告)号：US10707777B2
公开(公告)日：2020-07-07
申请号：US15763153
申请日：2016-09-27
申请人： Vacon Oy
发明人： Jussi Pouttu , Ari Ristimäki , Toni Itkonen
IPC分类号： H02M7/493 , H03K17/12 , H02M5/458 , H02M7/5387 , H02P27/06
摘要： A method and arrangement for controlling semiconductor power switches, e.g. IGBTs, in parallel connected power devices, e.g. in frequency converters, wherein the semiconductor power switches connect either the positive or the negative pole of the intermediate DC-voltage of the power device to an output phase of the power device. In the method the voltages of those output phases which are connected in parallel are measured, the timing differences of the output voltage state changes are calculated on the basis of the output voltage measurement results, and the control signals of the semiconductor power switches are advanced or delayed such that the output voltage state changes in the phases which are connected together via output impedances occur at desired time instants.

8. 发明授权

US10696523B2 Control device and method for controlling motion of a load 有权
公开(公告)号：US10696523B2
公开(公告)日：2020-06-30
申请号：US15955141
申请日：2018-04-17
申请人： Vacon Oy
发明人： Jaakko Ollila
IPC分类号： B66C13/06
摘要： A control device for controlling motion of a load of a carrier device is presented. The carrier device can be for example a crane and the load can be carried with a rope connected to a suspension point of the crane. The control device comprises an input interface for receiving an input signal indicative of a target speed of the load, an output interface for submitting an output signal indicative of a reference speed of the suspension point, and a processing system constituting a signal processing path for producing the output signal based on the input signal. The signal processing path comprises at least one finite impulse response filter for suppressing a signal component whose frequency is the natural swinging frequency of the load. Due to the finite impulse response, the temporal length of settling and tail effects caused by the filter is limited and deterministic.

9. 发明授权

US07847663B2 Filtering choke arrangement 有权
标题翻译：过滤扼流圈布置
公开(公告)号：US07847663B2
公开(公告)日：2010-12-07
申请号：US12216452
申请日：2008-07-03
申请人： Nicklas Södö
发明人： Nicklas Södö
IPC分类号： H01F21/00
CPC分类号： H01F3/10 , H01F3/14 , H01F37/00 , H01F2003/103 , H02M1/14
摘要： DC choke arrangement of a power transformer, especially of a frequency converter, provided with a DC circuit and connected to an AC electricity network, to limit the harmonics of the network current taken by an appliance from the AC network, in which DC choke arrangement is at least one choke (Ldc+, Ldc−), which is arranged in the magnetic core, which contains pillar parts and yoke parts (1a′, 1b′, 2a′, 2b′), in which one or more permanent magnets (51) are arranged in the magnetic core of the choke, and in which the permanent magnet is positioned at an angle with respect to the longitudinal direction of the part or parts of the magnetic core such that the cross-sectional area of the permanent magnet is greater than the cross-sectional area of the part of the magnetic core in question or the parts of the magnetic core in question.
摘要翻译：具有直流电路并连接到交流电网络的电力变压器，特别是变频器的直流扼流装置，用于限制设备从AC网络获取的网络电流的谐波，其中DC扼流器布置是至少一个布置在磁芯中的扼流圈（Ldc +，Ldc-），其包含支柱部分和轭部分（1a'，1b'，2a'，2b'），其中一个或多个永磁体（51）被布置在扼流圈的磁芯中，并且其中永磁体相对于磁芯的部分的纵向方向成一角度，使得永磁体的横截面面积大于所述磁芯的部分的横截面积或所述磁芯的部分。

10. 发明授权

US11575309B2 Method and device for damping of LCL filter during start-up of an electronic appliance 有权
公开(公告)号：US11575309B2
公开(公告)日：2023-02-07
申请号：US17391474
申请日：2021-08-02
申请人： Vacon Oy
发明人： Nicklas Jan Anders Södö
IPC分类号： H02M1/12 , H02M1/36 , H02M7/483 , H02M7/02 , H02M7/04
摘要： An electronic appliance such as a low harmonic drive, an active rectifier, a grid converter or any active front end or grid converter with an LCL filter. The converter is a two-level, a three-level or a multilevel inverter. The electronic appliance includes an LCL filter on a grid side of the electronic appliance and an active front end rectifier provided on a load side of the electronic appliance. The LCL filter includes grid side inductors and an active front end rectifier is connected to the LCL filter. A method for damping a corresponding electronic appliance is also disclosed.

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