公开(公告)号：EP2556575A2

公开(公告)日：2013-02-13

申请号：EP11713662.2

申请日：2011-04-01

申请人： Danfoss Drives A/S

发明人： KALASCHNIKOW, Sergej ,  ASIMINOAEI, Lucian

IPC分类号： H02J3/01

CPC分类号： H02J3/01 ,  H02J3/1842 ,  Y02E40/22 ,  Y02E40/40

摘要： The present invention relates to a method for suppressing one or more harmonic currents in a power supply network, said harmonic currents being generated by one or more loads operationally connected to said power supply network, the method comprising the steps of providing an active power filter comprising an electronic inverter comprising a number of controllable switches, said electronic inverter being operatively connected to an LCL-filter forming part of said active power filter, and providing PWM control signals to each of said controllable switches in response to a particular harmonic current or particular harmonic currents to be suppressed in the power supply network, said PWM control signals varying in response to a value of at least one measured electrical parameter. Moreover, the present invention relates to an active power filter suitable for carrying out the before-mentioned method.

公开(公告)号：EP2537253A2

公开(公告)日：2012-12-26

申请号：EP11705804.0

申请日：2011-02-18

申请人： Danfoss Drives A/S

发明人： ANDERSEN, Henrik, Rosendal

IPC分类号： H03K17/567

CPC分类号： H03K17/567 ,  H02P1/029 ,  H02P6/18 ,  H02P6/20 ,  H02P27/08 ,  H03K2217/0081

摘要： The present invention relates to a motor controller employing bootstrap-capacitor supplies and in particular to the situation where the bootstrap supplies have to be charged, while the motor controller is connected to a spinning and energized motor. The present invention introduces a method of recharging based on choosing a recharging sequence from a set of recharging sequences, where the choice depends on the state of the connected motor and in particular on the back-EMF voltages of the motor.

摘要翻译： 本发明涉及一种马达控制器用人自举电容器用品，特别涉及其中的自举电源必须被充电的情况，而马达控制器连接到纺丝和通电电机。 本发明引入再充电基于来自一组再充电的序列，其中该选择取决于所连接的电机的状态，特别是在电动机的反电动势电压选择再充电序列的方法。

公开(公告)号：EP2279549B1

公开(公告)日：2012-08-01

申请号：EP09729950.7

申请日：2009-04-08

申请人： Danfoss Drives A/S

发明人： SIMON, Karl-Peter

IPC分类号： H02H7/08 ,  G01R31/34

CPC分类号： G01R31/343 ,  H02P29/0241

摘要： A method for detecting an error in an induction machine is provided, wherein current components are evaluated in a fixed flux, particularly fixed rotor flux coordinate system. In this way, it is supposed to be possible to detect errors in a timely manner. For this purpose, it is provided that a flux-forming current component (i
vekd ) is subjected to a frequency analysis in the fixed flux, particularly fixed rotor flux coordinate system.

公开(公告)号：EP2172731A2

公开(公告)日：2010-04-07

申请号：EP09012300.1

申请日：2009-09-29

申请人： Danfoss Drives A/S

发明人： Lundorf, René

IPC分类号： F28F3/12 ,  F28F9/02

CPC分类号： F28F3/12 ,  F28F9/026 ,  H01L23/473 ,  H01L2924/0002 ,  H01L2924/00

摘要： A flow distributor assembly (13) for distributing a fluid flow across at least two surfaces (15) to be cooled is disclosed. The flow distributor assembly (13) comprises a first flow distributor (1a) and a second flow distributor (1b). Each flow distributor (1a, 1b) has a set of flow cells (3) formed therein, and comprises a connecting region. The first connecting region and the second connecting region are adapted to interconnect in such a manner that the first flow distributor (1a) and the second flow distributor (1b) are joined to form the flow distributor assembly (13), and in such a manner that the first connecting region and the second connecting region in combination define an inlet manifold (9) and an outlet manifold (10), the inlet manifold (9) and the outlet manifold (10) being fluidly connected to each of the flow cells (3) of the first set of flow cells (3) and the second set of flow cells (3).
Also disclosed is a cooling unit (17) comprising a housing (14) and a flow distributor assembly (13) arranged in an interior part of the housing (14).
The two flow distributors (1a, 1b) allows fluid flow to be distributed across at least two surfaces (15) to be cooled. The flow distributor assembly (13) is easy and cost effective to manufacture because the manifolds (9, 10) are automatically formed when assembling the flow distributor assembly (13).

摘要翻译： 公开了一种用于在待冷却的至少两个表面（15）上分配流体流的流量分配器组件（13）。 流量分配器组件（13）包括第一流量分配器（1a）和第二流量分配器（1b）。 每个流量分配器（1a，1b）具有形成在其中的一组流动池（3），并且包括连接区域。 第一连接区域和第二连接区域适于互连，使得第一流量分配器（1a）和第二流量分配器（1b）连接以形成流量分配器组件（13），并且以这种方式 第一连接区域和第二连接区域组合地限定入口歧管（9）和出口歧管（10），入口歧管（9）和出口歧管（10）流体连接到每个流动池 3）和第二组流动池（3）。 还公开了一种冷却单元（17），其包括壳体（14）和布置在壳体（14）的内部部分中的流量分配器组件（13）。 两个流量分配器（1a，1b）允许流体流动分布在至少两个待冷却的表面（15）上。 流量分配器组件（13）由于在组装流量分配器组件（13）时自动形成歧管（9,10）而容易且成本低廉。

公开(公告)号：EP2143196A2

公开(公告)日：2010-01-13

申请号：EP08715594.1

申请日：2008-03-26

申请人： Danfoss Drives A/S

发明人： LAZAR, Radu, Dan ,  ANDERSEN, Henrik, Rosendal

IPC分类号： H02M7/5395 ,  H02P27/08

CPC分类号： H02M7/5395 ,  H02P27/08

摘要： The present invention relates to a method for generating an electric control signal for controlling one or more switching elements of an inverter for driving an electric machine, such as a motor, the method comprising the steps of providing an electric control signal comprising a control frequency and a corresponding control period, dividing a first control period of said electric control signal into a plurality of switching periods, and providing a first switching PWM pulse within a first switching period of a first control period, and providing a second switching PWM pulse within a second switching period of said first control period, wherein the first switching PWM pulse is a minimum-filtered PWM pulse, and wherein the second switching PWM pulse is a corrected PWM pulse. The present invention further relates to an electronic control signal provided according to the before-mentioned method, and to an electronic control system for providing the before-mentioned method.

摘要翻译： 本发明涉及一种用于产生用于控制用于驱动诸如电动机的电机的逆变器的一个或多个开关元件的电气控制信号的方法，所述方法包括以下步骤：提供包括控制频率和 相应的控制周期，将所述电控信号的第一控制周期分成多个切换周期，并在第一控制周期的第一开关周期内提供第一开关PWM脉冲，并在第二控制周期内提供第二开关PWM脉冲 所述第一控制周期的开关周期，其中所述第一开关PWM脉冲是最小滤波PWM脉冲，并且其中所述第二开关PWM脉冲是经校正的PWM脉冲。 本发明还涉及根据上述方法提供的电子控制信号以及用于提供前述方法的电子控制系统。

公开(公告)号：EP2090146A1

公开(公告)日：2009-08-19

申请号：EP07846409.6

申请日：2007-12-10

申请人： Danfoss Drives A/S

发明人： ZHENG, Li

IPC分类号： H05K7/20 ,  H01L23/467 ,  H02M7/00

CPC分类号： H05K7/20918 ,  H01L23/467 ,  H01L2924/0002 ,  H01L2924/00

摘要： The present invention provides an electronic device, comprising: a circuit board having at least one first heat-generating element and at least one second heat-generating element mounted thereon; a heat sink connected to said at least one first heat-generating element; a fan facing said heat sink; and an airflow guiding member placed between said fan and said heat sink for guiding the cooling air from said fan to said heat sink and said at least one second heat-generating element respectively. Said electronic device may further comprise a separating member for separating a main body of said at least one second heat-generating element from said circuit board, so as to prevent the cooling air guided to said at least one second heat-generating element from flowing to said circuit board; a bracket for separating said at least one first heat-generating element from other elements on said circuit board, so as to thermally insulate between them; and a flow-guiding gate guiding the airflow from said fan, and dispensing more airflow flow through the region on the heat sink corresponding to at least one first heat-generating element.

公开(公告)号：EP2556575B1

公开(公告)日：2015-03-18

申请号：EP11713662.2

申请日：2011-04-01

申请人： Danfoss Drives A/S

发明人： KALASCHNIKOW, Sergej ,  ASIMINOAEI, Lucian

IPC分类号： H02J3/01

CPC分类号： H02J3/01 ,  H02J3/1842 ,  Y02E40/22 ,  Y02E40/40

公开(公告)号：EP2677330A1

公开(公告)日：2013-12-25

申请号：EP12173157.4

申请日：2012-06-22

申请人： Danfoss Drives A/S

发明人： Ljusev, Petar

IPC分类号： G01R31/40

CPC分类号： H02S50/10

摘要： The present invention relates to a method and an arrangement for determining a position of an isolation fault in a PV installation, the method comprising the steps of
- determining a total equivalent voltage source value of a Thevenin equivalent circuit of the PV installation,
- locating the isolation fault within the PV string by comparing a measured voltage value of the PV string and the total equivalent voltage source value.
Isolation faults may involve faults in PV modules, PV cable etc. of the PV installation.

摘要翻译： 本发明涉及一种用于确定PV安装中隔离故障的位置的方法和装置，该方法包括以下步骤： - 确定PV安装的戴维南等效电路的总等效电压源值， - 定位 通过比较PV串的测量电压值和总等效电压源值，在PV串内的隔离故障。 隔离故障可能涉及光伏组件的光伏组件，光伏电缆等的故障。

公开(公告)号：EP2663171A1

公开(公告)日：2013-11-13

申请号：EP12003600.9

申请日：2012-05-07

申请人： Danfoss Drives A/S

发明人： Weiss, Dietmar

IPC分类号： H05K7/20

CPC分类号： H05K7/207

摘要： The present invention relates to a method for dehumidifying an enclosure adapted to accommodate electronics, the method comprising the steps of evaporating water or moisture formed within the enclosure at an essentially constant rate of evaporation, said essentially constant rate of evaporation being achieved by heating air within the enclosure in a manner so that the difference between saturation pressure and partial vapour pressure is kept essentially constant during evaporation. The invention further relates to an arrangement for carrying out the before-mentioned method.

摘要翻译： 本发明涉及一种用于对适于电子装置的外壳进行除湿的方法，所述方法包括以基本恒定的蒸发速率蒸发在外壳内形成的水或湿气的步骤，所述蒸发速率基本恒定， 以使得饱和压力和部分蒸汽压力之间的差在蒸发期间保持基本恒定的方式。 本发明还涉及一种用于实施上述方法的装置。

公开(公告)号：EP2631598A1

公开(公告)日：2013-08-28

申请号：EP12001236.4

申请日：2012-02-24

申请人： Danfoss Drives A/S

发明人： de Place Rimmen, Peter

IPC分类号： G01D3/08 ,  G01D18/00 ,  G01D9/00 ,  G01K3/04 ,  G01N17/00

CPC分类号： G01D9/005

摘要： A mechanism is provided for determining or measuring a plurality of stress measures, with cumulative stress measures for each of the plurality of stress measures being recorded. In addition, a mechanism is provided for determining an occurrence of each of a plurality of defined stress events and a count of the number of times a defined stress event has occurred is incremented on each determined occurrence of that stress event.

摘要翻译： 提供了用于确定或测量多个应力测量的机构，其中记录了多个应力测量中的每一个的累积应力测量。 此外，提供了一种用于确定多个定义的应力事件中的每一个的发生的机制，并且在每个确定的应力事件的发生时增加了定义的应力事件已经发生的次数的计数。