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公开(公告)号：US20150171772A1
公开(公告)日：2015-06-18
申请号：US14107026
申请日：2013-12-16
IPC分类号： H02M7/5387 , G01R19/00
CPC分类号： H02M7/53871 , G01R19/0007 , G01R31/343 , H02P21/00
摘要： Output voltage feedback systems and methods are provided for controlling voltage source inverter output voltages using low bandwidth buffer circuitry and low A/D converter sample rates to sense and sample PWM output voltage waveforms to provide an estimated volt-second value for phase voltage or line-line voltage is feedback for controlling the voltage source inverter.
摘要翻译： 提供输出电压反馈系统和方法，用于使用低带宽缓冲电路和低A / D转换器采样率来控制电压源逆变器输出电压，以感测和采样PWM输出电压波形，以提供相电压或线性电压的估计伏秒值， 线路电压是控制电压源逆变器的反馈。
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2.发明授权Discontinuous pulse width drive modulation method and apparatus for reduction of common-mode voltage in power conversion systems 有权用于降低功率转换系统中共模电压的不连续脉宽驱动调制方法和装置公开(公告)号：US08503207B2
公开(公告)日：2013-08-06
申请号：US12893838
申请日：2010-09-29
IPC分类号： H02M7/797
CPC分类号： H02M5/4585 , H02M1/12 , H02M2001/0025 , H02M2001/123 , H02M2001/385
摘要： Control systems, methods and power conversion systems are presented for reducing common mode voltages in AC motor loads driven by inverter PWM control using switching sequences with only active vectors where a first vector of each switching sequence differs by one phase switching state from a last vector of a switching sequence of an adjacent sector, along with enhanced deadtime compensation and reflected wave reduction techniques in providing pulse width modulated switching signals to a switching inverter.
摘要翻译： 提出了控制系统，方法和功率转换系统，用于降低由逆变器PWM控制驱动的交流电动机负载中的共模电压，其中仅使用具有每个开关序列的第一向量与一个相位切换状态与最后一个矢量 相邻扇区的切换序列，以及增强的死区时间补偿以及向切换逆变器提供脉宽调制切换信号的反射波减少技术。
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公开(公告)号：US08471516B2
公开(公告)日：2013-06-25
申请号：US12786229
申请日：2010-05-24
IPC分类号： G05B11/28
CPC分类号： H02M7/537 , H02M7/53875 , H02P9/007 , H02P27/08 , H02P29/68
摘要： The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the inverter may be changed such that stress may be reduced on the inverter bond wires of the inverter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the inverter and determining whether the operating conditions result in aging the inverter to a point which reduces the inverter lifespan below a desired lifespan. If the operating conditions reduce the inverter lifespan below the desired lifespan, the switching frequency may be reduced to a lower or minimum switching frequency of the inverter and/or the output current of the inverter may be reduced to a maximum output current at the minimum switching frequency.
摘要翻译： 本技术包括用于操作逆变器以维持逆变器寿命的方法和系统。 在一些实施例中，可以改变逆变器的开关频率和/或输出电流，使得逆变器的反相器接合线上的应力可能减小。 更具体地，实施例涉及计算逆变器的某些工作条件的老化参数，并且确定操作条件是否导致变频器老化到将变频器寿命降低到期望寿命以下的时间点。 如果工作条件将变频器寿命降低到期望的寿命以下，开关频率可以降低到变频器的较低或最小开关频率，和/或可以将逆变器的输出电流降至最小输出电流 频率。
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公开(公告)号：US20120212172A1
公开(公告)日：2012-08-23
申请号：US13031454
申请日：2011-02-21
CPC分类号： G01R31/025 , G01R31/42
摘要： The present invention relates generally to systems and methods for detecting ground faults (i.e., line-to-ground faults) in electrical power conversion systems. In particular, the embodiments described herein include a common mode voltage booster module configured to calculate a common mode voltage boost factor and a common mode voltage boost function based on a plurality of voltage commands for the system. The common mode voltage boost factor and/or the common mode voltage boost function may be applied to the voltage commands to generate boosted voltage commands which, when applied to an inverter or converter, source current indicative of ground faults in the system. More specifically, the common mode voltage boost factor may be multiplied by a common mode voltage calculated by a common mode voltage calculator and summed with the voltage commands. In addition, the common mode voltage boost function may be summed with the voltage commands after the voltage commands have been summed with the common mode voltage boost factor.
摘要翻译： 本发明一般涉及用于检测电力转换系统中的接地故障（即，线对地故障）的系统和方法。 特别地，本文所述的实施例包括共模电压升压模块，其被配置为基于用于该系统的多个电压指令来计算共模升压因子和共模升压功能。 共模升压因子和/或共模升压功能可以被施加到电压指令以产生升压电压命令，当被施加到逆变器或转换器时，指示系统中的接地故障的源电流。 更具体地，共模电压升高因子可以乘以由共模电压计算器计算并与电压指令相加的共模电压。 此外，共模电压升压功能可以在电压指令与共模升压因子相加之后与电压指令相加。
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公开(公告)号：US20110199072A1
公开(公告)日：2011-08-18
申请号：US12706488
申请日：2010-02-16
IPC分类号： G01R25/00
摘要： A system and method for controlling an electrical device is provided. The method comprises receiving three phase power from a source, decomposing signals representative of power in each phase of the three phase power to provide a positive-sequence component of each phase and tracking the positive-sequence component of each phase via a phase locked loop and a tracking filter.
摘要翻译： 提供了一种用于控制电气设备的系统和方法。 该方法包括从源接收三相功率，分解代表三相功率的每相中的功率的信号，以提供每相的正序分量，并通过锁相环追踪每相的正序分量; 跟踪过滤器
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6.发明授权公开(公告)号：US06359416B1
公开(公告)日：2002-03-19
申请号：US09677036
申请日：2000-09-29
IPC分类号： H02P528
CPC分类号： H02P21/22 , Y10S388/906
摘要： A method and apparatus for controlling a synchronous frame current regulator wherein the apparatus includes a current predictor and a current predictor adjuster, the current predictor predicting the current provided to a plant from both a forcing function and an actual current value and the adjuster adjusting the current prediction based on a difference between the current prediction and the actual current sampled thereby driving the actual current so as to conform with a commanded current value.
摘要翻译： 一种用于控制同步帧电流调节器的方法和装置，其中所述装置包括电流预测器和电流预测器调节器，所述电流预测器预测从强制功能和实际电流值两者提供给电站的电流，并且调节器调节电流 基于当前预测和实际电流之间的差异进行预测，从而驱动实际电流以符合指令的电流值。
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公开(公告)号：US4706012A
公开(公告)日：1987-11-10
申请号：US863015
申请日：1986-05-14
CPC分类号： H02M7/48
摘要： A regulator for a closed loop control system receives a sinusoidal reference input signal i* and sums it with a feedback signal i to produce an error signal. A control signal is produced by the regulator by combining signal components which include: (a) a component proportional to the error signal; (b) a componet proportional to the integral of the error signal; and (c) a component related to the frequency of the reference input signal. The latter component insures that an accurate control signal is produced by the regulator over a wide frequency range.
摘要翻译： 用于闭环控制系统的调节器接收正弦参考输入信号i *并将其与反馈信号i相加以产生误差信号。 控制信号由调节器通过组合信号分量产生，包括：（a）与误差信号成比例的分量; （b）与误差信号的积分成正比的分量; 和（c）与参考输入信号的频率相关的分量。 后一部件确保了调节器在较宽的频率范围内产生精确的控制信号。
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公开(公告)号：US4680695A
公开(公告)日：1987-07-14
申请号：US922775
申请日：1986-10-27
CPC分类号： H02M7/48
摘要： A current regulator for a variable frequency power supply includes a proportional plus integral circuit that produces a composite control output signal for each phase. To improve the performance of the current regulator at higher frequencies, the composite control output signal for each phase also inlcudes a cross coupled component which is produced by multiplying a d.c. signal proportional to frequency times an integrator output signal from another phase. The composite control signals are applied to a voltage source inverter which produces the output currents to a load.
摘要翻译： 用于可变频率电源的电流调节器包括比例积分电路，其产生用于每个相位的复合控制输出信号。 为了提高电流调节器在较高频率下的性能，每相的复合控制输出信号还包括一个交叉耦合分量，该交叉耦合分量是通过将直流 与频率成比例的信号乘以来自另一相的积分器输出信号。 复合控制信号被施加到产生到负载的输出电流的电压源逆变器。
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公开(公告)号：US08964427B2
公开(公告)日：2015-02-24
申请号：US13537993
申请日：2012-06-29
CPC分类号： H03H11/04 , G01R25/00 , H02M1/4233 , H03F1/565 , H03H7/38 , Y02B70/126
摘要： A phase angle detector with a PLL, a power converter, and a method for reducing offsets in an input signal, in which an adaptive offset processor selectively removes a DC offset component from the input signal to generate a modified signal including a fundamental frequency component and higher order harmonics of the input signal with the DC offset component removed, and the PLL provides a phase angle signal at least partially according to the modified signal.
摘要翻译： 具有PLL的相位角检测器，功率转换器和用于减少输入信号中的偏移的方法，其中自适应偏移处理器从输入信号中选择性地去除DC偏移分量，以产生包括基频分量的修正信号， 去除DC偏移分量的输入信号的高阶谐波，并且PLL根据修改的信号至少部分地提供相位角信号。
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10.发明授权公开(公告)号：US08736091B2
公开(公告)日：2014-05-27
申请号：US12818895
申请日：2010-06-18
摘要： The present techniques include methods and systems for operating converter to maintain a lifespan of the converter. In some embodiments, the operating frequency of the converter may be increased such that stress may be reduced on the bond wires of the converter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the converter operating in a maximum power point tracking (MPPT) mode and determining whether the MPPT operation results in aging the converter to a point which reduces the converter lifespan below a desired lifespan. If the MPPT operation reduces the converter lifespan below the desired lifespan, the frequency of the converter may be increased such that the converter may be controlled to operate at a percentage of MPPT. Thus, in some embodiments, power output may be optimized with respect to maintaining a desired lifespan of the converter.
摘要翻译： 本技术包括用于操作转换器以保持转换器寿命的方法和系统。 在一些实施例中，可以增加转换器的工作频率，使得可以在转换器的接合线上减小应力。 更具体地，实施例涉及为以最大功率点跟踪（MPPT）模式操作的转换器的某些操作条件计算老化参数，并且确定MPPT操作是否导致转换器老化到将转换器寿命降低到期望寿命以下的点 。 如果MPPT操作将转换器寿命降低到期望的寿命以下，则可以增加转换器的频率，使得可以将转换器控制为以MPPT的百分比进行操作。 因此，在一些实施例中，可以相对于维持转换器的期望寿命来优化功率输出。
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