公开(公告)号：US09356544B2

公开(公告)日：2016-05-31

申请号：US14405319

申请日：2013-05-08

申请人： SIEMENS AKTIENGESELLSCHAFT

发明人： Christoph Brunotte

IPC分类号： H02P6/10 ,  H02J3/18 ,  H02P23/04 ,  H02P27/06

CPC分类号： H02P6/10 ,  H02J3/1835 ,  H02P23/04 ,  H02P27/06 ,  Y02E40/30

摘要： Electrical malfunctions in a network which are caused by torque fluctuations of an electric motor, in particular flicker, are reduced by using a control device. For simple and cost-effective minimizing or even correction of such malfunctions with the control device, the control device has at least one first input for supplying an input signal which contains information suitable for determining the loading of the network by torque fluctuations and at least one output for transmitting an output signal to at least one converter supplying the electric motor. This makes it possible to reduce or ideally to eliminate electrical malfunctions in a network which are caused by torque fluctuation of the electric motor.

摘要翻译： 通过使用控制装置来减少由电动机的扭矩波动引起的网络中的电气故障，特别是闪烁。 为了简化和成本有效地最小化或甚至校正与控制装置的这种故障，控制装置具有至少一个第一输入，用于提供输入信号，该输入信号包含适于通过扭矩波动确定网络的负载的信息，并且至少一个 输出，用于将输出信号发送到提供电动机的至少一个转换器。 这使得可以减少或理想地消除由电动机的扭矩波动引起的网络中的电气故障。

公开(公告)号：US20150303855A1

公开(公告)日：2015-10-22

申请号：US14423940

申请日：2013-08-29

申请人： SHELL OIL COMPANY

发明人： Michel Pieter Alfons VERHULST

IPC分类号： H02P23/04 ,  F25J1/00

CPC分类号： H02P23/04 ,  F25J1/0022 ,  F25J1/0284 ,  F25J1/0298 ,  H02P29/40 ,  H02P29/50

摘要： A variable speed drive system employing an electric motor and a frequency converter arranged between an AC power source and the electric motor is operated. The frequency converter functions to convert AC power obtained from the AC power source at a source frequency to converted power at a variable drive frequency. A mechanical assembly can be coupled to the electric motor. Electric modulation circuitry is provided interacting with the frequency converter. It is arranged to impose fluctuations, independently from any torsional excitation in the mechanical assembly and the AC power source, in the inter-harmonic frequencies of inter-harmonic currents generated in the frequency converter.

摘要翻译： 操作使用电动机的变速驱动系统和布置在AC电源和电动机之间的变频器。 变频器用于将以源频率从AC电源获得的AC电力转换为可变驱动频率的转换功率。 机械组件可以联接到电动机。 提供与变频器相互作用的电调制电路。 它被设置为在变频器中产生的谐波间谐波频率的独立于机械组件和交流电源中的任何扭转激励的波动。

公开(公告)号：US20150188476A1

公开(公告)日：2015-07-02

申请号：US14226350

申请日：2014-03-26

申请人： SAMSUNG ELECTRO-MECHANICS CO., LTD,

发明人： Wan Cheol Yang

IPC分类号： H02P23/04

CPC分类号： H02P23/04 ,  H02P25/034

摘要： A motor driving apparatus may include: a weight generating unit generating weights of external input signals using a damping ratio of a motor apparatus; and a driving signal generating unit generating a driving signal by converting values of at least some signals among the external input signals to 0 using the weights.

摘要翻译： 马达驱动装置可以包括：重量产生单元，使用马达装置的阻尼比产生外部输入信号的重量; 以及驱动信号生成单元，通过使用所述权重将所述外部输入信号中的至少一些信号的值转换为0来生成驱动信号。

公开(公告)号：US08811048B2

公开(公告)日：2014-08-19

申请号：US13293757

申请日：2011-11-10

申请人： Yi Zhang ,  Wei Chen ,  Bo-Yu Pu

发明人： Yi Zhang ,  Wei Chen ,  Bo-Yu Pu

IPC分类号： H02P27/14 ,  H02P23/04

CPC分类号： H02P27/14 ,  H02M5/4585 ,  H02M7/487

摘要： The present invention provides a medium voltage variable frequency driving system, including a three-phase switch-mode rectification module, a multilevel inverter and a high-capacity capacitor module. The three-phase switch-mode rectification module is coupled with a three-phase electrical grid, for converting an AC voltage input with a fixed operating frequency on the three-phase electrical grid into a DC voltage. The multilevel inverter is used for converting the DC voltage into an AC voltage with a required variable frequency, so as to drive an induction motor. The high-capacity capacitor module is coupled between the three-phase switch-mode rectification module and the multilevel inverter, for temporarily storing the DC voltage. In the present invention, a three-phase switch-mode rectification technology is used at the front-end rectifier, and a diode-clamped three-level inverter is adapted correspondingly at the rear-end inverter.

摘要翻译： 本发明提供一种中压变频驱动系统，包括三相开关模式整流模块，多电平逆变器和大容量电容模块。 三相开关模式整流模块与三相电网耦合，用于将三相电网上固定工作频率的交流电压输入转换成直流电压。 多电平逆变器用于将直流电压转换成具有所需可变频率的交流电压，以驱动感应电动机。 高容量电容器模块耦合在三相开关模式整流模块和多电平逆变器之间，用于暂时存储直流电压。 在本发明中，前端整流器采用三相开关模式整流技术，二相钳位三电平逆变器适用于后端逆变器。

公开(公告)号：US08373378B2

公开(公告)日：2013-02-12

申请号：US12958526

申请日：2010-12-02

申请人： Robert E. Steiner

发明人： Robert E. Steiner

IPC分类号： H02P23/04

CPC分类号： H02P13/06 ,  H02M5/297

摘要： In various embodiments, the present disclosure provides a speed control system for a motor that includes a fixed speed control portion and a variable speed control portion. The fixed speed control portion is operable to control a speed of a motor in a fixed speed mode wherein the motor is operated at a preselected fixed speed below a predetermined fixed speed mode threshold speed. The variable speed control portion is operable to control the motor in a variable speed mode wherein the motor is operated such that a speed of the motor can be selectively varied within a range between the fixed speed mode threshold speed and a maximum motor speed. The system additionally includes a switching device structured and operable to selectively switch the speed control system between the fixed speed mode and the variable speed mode.

摘要翻译： 在各种实施例中，本公开提供了一种用于电动机的速度控制系统，其包括固定速度控制部分和可变速度控制部分。 固定速度控制部分可操作以以固定速度模式控制电动机的速度，其中电动机以预定的固定速度低于预定的固定速度模式阈值速度操作。 可变速度控制部分可操作以以可变速度模式控制电动机，其中电动机被操作，使得可以在固定速度模式阈值速度和最大电动机速度之间的范围内选择性地改变电动机的速度。 该系统还包括构造并可操作以在速度模式和可变速度模式之间切换速度控制系统的开关装置。

公开(公告)号：US20080309279A1

公开(公告)日：2008-12-18

申请号：US12136282

申请日：2008-06-10

申请人： Toru TAZAWA

发明人： Toru TAZAWA

IPC分类号： H02P23/04

CPC分类号： H02P23/04

摘要： A motor controller includes: a notch filter arranged inside a control system; an oscillation frequency estimating section which estimates an oscillation frequency component in a motor; and a notch control section which controls a notch filter so as to change a notch frequency and a notch width. The notch control section changes a frequency between an oscillation frequency and a notch frequency set in a notch filter as a new notch frequency, while changing a notch width to a new notch width such that the notch width is larger after the change than before the change.

摘要翻译： 电动机控制器包括：配置在控制系统内的陷波滤波器; 振荡频率估计部，估计电动机的振荡频率分量; 以及切口控制部，其控制陷波滤波器以改变切口频率和切口宽度。 陷波控制部分将在陷波滤波器中设置的振荡频率和陷波频率之间的频率作为新的陷波频率改变，同时将切口宽度改变到新的切口宽度，使得切换宽度在变化之后比在改变之前更大 。

公开(公告)号：US20050248361A1

公开(公告)日：2005-11-10

申请号：US10842358

申请日：2004-05-10

申请人： Patrick O'Gorman ,  Scott Repplinger

发明人： Patrick O'Gorman ,  Scott Repplinger

IPC分类号： H02P23/00 ,  G01R31/34 ,  H02M1/00 ,  H02P3/18 ,  H02P3/22 ,  H02P7/00 ,  H02P21/00 ,  H02P23/04

CPC分类号： H02P23/04 ,  H02M7/5395 ,  H02M2001/0009 ,  H02P3/22

摘要： While a PWM-controlled, FET-switched three-phase motor is operating in a mechanical damping mode, a single current sensor is used to measure current in the motor. When mechanical feedback into the motor exceeds a predetermined threshold, a bank of the FET switches can be closed to provide damping of the mechanical feedback. This causes currents to circulate within the motor, which an external single current sensor cannot measure to determine current load or when the mechanical feedback is no longer a problem. The present invention periodically switches selected switches necessary to sample the current in at least one phase of the motor to determine when the mechanical feedback into the motor is no longer a problem, while preferably also maintaining an average zero voltage vector.

摘要翻译： PWM控制的FET开关三相电机在机械阻尼模式下工作，单个电流传感器用于测量电机中的电流。 当进入电动机的机械反馈超过预定阈值时，可以关闭一组FET开关以提供机械反馈的阻尼。 这导致电流在电机内循环，外部单电流传感器不能测量以确定当前负载或何时机械反馈不再是问题。 本发明周期性地切换在电动机的至少一个相位中对电流进行采样所必需的所选择的开关，以确定何时向电动机的机械反馈不再是问题，同时优选地还保持平均零电压矢量。

公开(公告)号：US4296367A

公开(公告)日：1981-10-20

申请号：US952385

申请日：1978-10-18

申请人： Akio Hirata

发明人： Akio Hirata

IPC分类号： H02M5/44 ,  H02P3/18 ,  H02P9/42 ,  H02P23/04 ,  H02P27/06 ,  H02P5/28 ,  H02P5/34 ,  H02P5/36

CPC分类号： H02P27/06 ,  H02P23/04 ,  H02P2201/03 ,  H02P27/047

摘要： A frequency converter applies a variable voltage with a variable frequency to an AC motor coupled with a load. At least one frequency region is set up for the variable frequency. The ratio of a percentage input voltage expressed in terms of a percentage of the rated input voltage of the AC motor, to a corresponding percentage input frequency expressed in terms of a percentage of the rated input frequency of the AC motor, is set less than 1 within the frequency region thus set. Also an apparatus for the AC motor control provided.

摘要翻译： 变频器将可变频率应用于与负载耦合的交流电动机。 为可变频率设置至少一个频率区域。 将以交流电动机的额定输入电压的百分比表示的百分比输入电压与以交流电动机的额定输入频率的百分比表示的对应百分比输入频率的比率设定为小于1 在这样设定的频率范围内。 还提供了用于交流电动机控制的装置。

公开(公告)号：US12031523B2

公开(公告)日：2024-07-09

申请号：US17787911

申请日：2020-12-18

申请人： VESTAS WIND SYSTEMS A/S

发明人： Esmaeil Ebrahimzadehveshareh ,  Torsten Lund ,  Mark Faber ,  Poul Brandt Christensen ,  Gert Karmisholt Andersen

IPC分类号： F03D7/00 ,  F03D7/02 ,  H02P23/04

CPC分类号： F03D7/0272 ,  H02P23/04 ,  F05B2270/327

摘要： The invention relates to a method for damping drive train oscillations of a VSM configured wind turbine. The method comprises determining a drive train damping power signal based on speed signal representing a generator speed, determining a power deviation based on a combination of a power reference for a desired power production, the drive train damping power-signal, a grid power supplied by the line side converter to the grid and a damping power, determining a virtual synchronous machine angle based on the power deviation so that the derivative of the virtual synchronous machine rotational speed is indicative of the power deviation, determining a converter reference for controlling the line side converter to generate the desired active power based on the virtual synchronous machine angle and a voltage reference for a voltage amplitude to be generated by the line side converter, and applying the converter reference to the line side converter.

公开(公告)号：US20240154560A1

公开(公告)日：2024-05-09

申请号：US18279200

申请日：2021-06-11

申请人： NIDEC CORPORATION

发明人： Kotaro KATAOKA

IPC分类号： H02P27/08 ,  H02P23/04 ,  H02P25/03

CPC分类号： H02P27/08 ,  H02P23/04 ,  H02P25/03

摘要： A power conversion device converts DC power into n-phase AC power. A first voltage and a second voltage lower than the first voltage are applied to the power conversion device, and the power conversion device outputs an n-phase output voltage based on a modulation factor. n is the number of phases of the AC output, and is an odd number of 3 or more. At a low modulation factor equal to or less than a first modulation factor, the output voltage becomes a sinusoidal output. At the second modulation factor larger than the first modulation factor, the output voltage is switched every electrical angle π/n between the phase in which the output voltage is fixed to the maximum voltage and the phase in which the output voltage is fixed to the minimum voltage.