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公开(公告)号：US20150070952A1
公开(公告)日：2015-03-12
申请号：US14541029
申请日：2014-11-13
CPC分类号： H02M7/219 , H02M5/272 , H02M7/48 , H02M7/5395 , H02M7/797 , H02M2001/123
摘要： An electric power converter according to an embodiment includes a switching unit, a controller, and a second bidirectional switch. The switching unit includes a plurality of first bidirectional switches disposed between a DC power source and an AC load or between a DC load and an AC power source. The controller controls the switching unit to perform power conversion between DC power and AC power. When turning off the second bidirectional switch disposed on a path between one pole of the DC power source or the DC load and the switching unit, the controller turns on the first bidirectional switch connected between the other pole of the DC power source and the AC load or between the other pole of the DC load and the AC power source.
摘要翻译： 根据实施例的电力转换器包括切换单元，控制器和第二双向开关。 开关单元包括设置在DC电源和AC负载之间或者在DC负载和AC电源之间的多个第一双向开关。 控制器控制开关单元在直流电源和交流电之间进行电源转换。 当关闭设置在直流电源的一极或直流负载之间的路径上的第二双向开关和开关单元时，控制器接通连接在直流电源的另一极和交流负载之间的第一双向开关 或直流负载的另一极与交流电源之间。
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公开(公告)号：US08872466B2
公开(公告)日：2014-10-28
申请号：US13391947
申请日：2009-08-24
摘要： A synchronous-machine starting device includes an electric power conversion unit for converting supplied electric power into AC power for supply to the armature of the synchronous machine, a rotor position detection unit for detecting a position of the rotor of the synchronous machine based on an AC voltage in the armature of the synchronous machine detected by an AC voltage detection unit, an electric power conversion control unit for controlling the electric power conversion unit based on the position of the rotor detected by the rotor position detection unit, and an abnormality detection unit detecting a rotation abnormality of the synchronous machine based on the AC voltage detected by the AC voltage detection unit after supply of the field current to the rotor of the synchronous machine is started.
摘要翻译： 同步机启动装置包括：电力转换单元，用于将所供电的电力转换成用于供给同步电机的电枢的交流电;转子位置检测单元，用于基于AC检测同步电机的转子的位置; 由交流电压检测单元检测到的同步电机的电枢中的电压;电力转换控制单元，用于基于由转子位置检测单元检测到的转子的位置来控制电力转换单元;以及异常检测单元检测 开始基于在向同步电机的转子提供励磁电流之后由AC电压检测单元检测到的AC电压的同步电机的旋转异常。
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公开(公告)号：US4390938A
公开(公告)日：1983-06-28
申请号：US272597
申请日：1981-06-11
申请人： Eric J. Stacey
发明人： Eric J. Stacey
CPC分类号： H02M5/272
摘要： In power conversion apparatus such as a naturally commutated cycloconverter for use in converting the output of a variable speed generator to a constant frequency, there is provided an end stop control circuit for ensuring commutation of power switching devices that includes timing wave generators for both rectification and inversion end stops. The timing wave generators are phase locked with the generator outputs but are controllable by end stop bias signal derived from a variable system parameter that may be independent of the source, such as load current to provide prompt protection against converter malfunctions due to excess load currents.Further provided is an excess current detector employing, for each phase, a pair of high slew rate, high current unipolar output op amps connected in a voltage follower configuration with a common pull-up resistor and a common load capacitor to develop a peak current signal representing the greater of the positive and negative peaks of the alternating phase current.
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公开(公告)号：US3152297A
公开(公告)日：1964-10-06
申请号：US12964661
申请日：1961-08-07
申请人： GEN ELECTRIC
发明人： PEASLEE LAWRENCE R
IPC分类号： H02M5/27
CPC分类号： H02M5/272
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5.发明授权Method for operating a converter in a system for generating electrical energy 有权用于在用于产生电能的系统中操作转换器的方法公开(公告)号：US09160245B2
公开(公告)日：2015-10-13
申请号：US13344060
申请日：2012-01-05
申请人： Joachim Boecker , Michael Loenneker
发明人： Joachim Boecker , Michael Loenneker
摘要： Described is a method for operating a converter for a system for generating electrical energy. In an embodiment of the method, the output voltage of the converter is converted to a d, q coordinate system, wherein the d, q coordinate system is assigned to the frequency of the voltage for the energy supply grid. A desired value is furthermore specified in the d, q coordinate system, several momentary or future values are determined from the output voltage in the d, q coordinate system for different switch positions of the converter, deviations between the desired value and the momentary or future values are determined in the d, q coordinate system, and the converter is switched to one of the switch positions in dependence on these deviations.
摘要翻译： 描述了一种用于操作用于产生电能的系统的转换器的方法。 在该方法的一个实施例中，转换器的输出电压被转换成d，q坐标系，其中d，q坐标系被分配给能量供电电网的电压的频率。 在d，q坐标系中进一步规定了一个期望的值，对于转换器的不同开关位置的d，q坐标系中的输出电压确定几个瞬时值或将来的值，在期望值和瞬时或未来之间的偏差 值在d，q坐标系中确定，并且根据这些偏差将转换器切换到开关位置之一。
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6.发明授权Interface for supplying power to a load from an electrical power supply network 有权用于从电力供应网络向负载供电的接口公开(公告)号：US07005840B2
公开(公告)日：2006-02-28
申请号：US10623865
申请日：2003-07-22
申请人： Christophe Cester
发明人： Christophe Cester
IPC分类号： H01F17/00
CPC分类号： H02M5/272
摘要： The power supply interface (10) includes a rectification stage (18), having an autotransformer (40) connected to a power supply network (12), and a signal conditioning stage (20) having an output (28) supplying power to a load (14). The conditioning stage (20) includes a power module (22), for conditioning the power supply signal, and a control module (24) designed to control the power module (22). An autotransformer (40) includes at least one additional winding (62A, 62B, 62C; 64A, 64B, 64C) connected to the control module (24) to supply it with electrical power, the or each additional winding being magnetically coupled to at least one primary winding (44A, 44B, 44C) of the autotransformer (40). The power is supplied to a motor in an airplane.
摘要翻译： 电源接口（10）包括具有连接到电源网络（12）的自耦变压器（40）的整流级（18）和具有向负载供电的输出（28）的信号调节级（20） （14）。 调节级（20）包括用于调节电源信号的功率模块（22）和设计成控制功率模块（22）的控制模块（24）。 自耦变压器（40）包括连接到控制模块（24）的至少一个附加绕组（62A，62B，62C; 64A，64B，64C）以向其提供电力，所述或每个附加绕组 被磁耦合到自耦变压器（40）的至少一个初级绕组（44A，44B，44C）。 电力供应给飞机上的电机。
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7.发明授权PWM inverter circuit having a filtered fundamental feedback DC link variation circuit 失效PWM逆变电路具有滤波后的基波反馈DC链路变化电路
公开(公告)号：US4935859A
公开(公告)日：1990-06-19
申请号：US421451
申请日：1989-10-13
IPC分类号： H02M5/27
CPC分类号： H02M5/272
摘要： This invention relates to a VSCF system for aircraft power generation having a DC source, the DC source producing a substantially constant voltage DC signal. An inverter is coupled to the DC source and receives the DC signal, applying a PWM pattern of switching transients to the DC signal to produce an AC signal from the DC signal. The subject invention contemplates the addition of a feedback circuit which comprises a transformer providing an inductive coupling between the AC signal at a point of regulation and the DC signal at a point between the DC source and the inverter to eliminate short duration switching transients in the PWM pattern. Modulation of the DC signal allows short duration switching transients in the PWM pattern to be lengthened, thereby avoiding physical minimum time switching limitations in the switches of the inverter. Feedback of the AC signal allows inverter frequency to be changed while maintaining synchronization between the DC signal modulation and PWM pattern fed to the inverter.
摘要翻译： 本发明涉及一种用于飞机发电的VSCF系统，其具有DC源，DC源产生基本恒定的电压DC信号。 反相器耦合到DC源并接收DC信号，将开关瞬变的PWM模式应用于DC信号以产生来自DC信号的AC信号。 本发明考虑了添加反馈电路，该反馈电路包括在调节点处的AC信号和DC源和逆变器之间的点处的DC信号之间提供电感耦合的变压器，以消除PWM中的短时间开关瞬变 模式。 直流信号的调制允许PWM模式中的短时间切换瞬变被延长，从而避免逆变器开关中的物理最小时间切换限制。 交流信号的反馈允许变频器频率同时保持直流信号调制与馈送到逆变器的PWM模式之间的同步。
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公开(公告)号：US4692671A
公开(公告)日：1987-09-08
申请号：US893946
申请日：1986-08-06
CPC分类号： F02C7/32 , H02M5/272 , H02P29/0016 , Y02T50/671
摘要： An electrically-compensated constant speed drive according to the present invention includes a speed summer having first and second input shafts and an output shaft at which constant speed motive power is developed wherein the first input shaft is coupled to a prime mover output shaft. A speed-compensating permanent magnet machine includes a motive power shaft coupled to the second input shaft of the speed summer and electrical power windings. A control permanent magnet machine includes a motive power shaft coupled to the output shaft of the speed summer and also includes electrical power windings. A power converter interconnects the power windings of the permanent magnet machines and comprises a first bi-directional AC/DC converter coupled to the electrical power windings of one of the permanent magnet machines, a second bi-directional AC/DC converter coupled to the electrical power windings of the other of the permanent magnet machines, a bi-directional DC/DC converter coupled between the AC/DC converters and a circuit for controlling the converters whereby the speed compensating permanent magnet machine develops compensating speed of a magnitude and direction sufficient to maintain the speed summer output shaft at the desired speed.
摘要翻译： 根据本发明的电动补偿恒速驱动器包括具有第一和第二输入轴的速度加速器和在其上产生恒定速度动力的输出轴，其中第一输入轴联接到原动机输出轴。 速度补偿永磁电机包括耦合到速度夏季和电力绕组的第二输入轴的动力轴。 控制永磁电机包括耦合到速度夏季的输出轴的动力轴，并且还包括电力绕组。 功率转换器互连永磁体机器的功率绕组，并且包括耦合到永磁体机器中的一个的电功率绕组的第一双向AC / DC转换器，耦合到电气的第二双向AC / DC转换器 永磁电机中的另一个的功率绕组，耦合在AC / DC转换器之间的双向DC / DC转换器和用于控制转换器的电路，由此速度补偿永磁体机器产生的幅度和方向的补偿速度足以 将夏季输出轴的速度保持在所需的速度。
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9.发明授权Cycloconverter apparatus with controllable end stop firing pulse control means 失效具有可控停止点火脉冲控制装置的旋转变频器装置
公开(公告)号：US4309752A
公开(公告)日：1982-01-05
申请号：US95803
申请日：1979-11-19
申请人： Eric J. Stacey
发明人： Eric J. Stacey
CPC分类号： H02M5/272
摘要： In power conversion apparatus such as a naturally commutated cycloconverter for use in converting the output of a variable speed generator to a constant frequency, there is provided an end stop control circuit for ensuring commutation of power switching devices that includes timing wave generators for both rectification and inversion end stops. The timing wave generators are phase locked with the generator outputs but are controllable by end stop bias signal derived from a variable system parameter that may be independent of the source, such as load current to provide prompt protection against converter malfunctions due to excess load currents.Further provided is an excess current detector employing, for each phase, a pair of high slew rate, high current unipolar output op amps connected in a voltage follower configuration with a common pull-up resistor and a common load capacitor to develop a peak current signal representing the greater of the positive and negative peaks of the alternating phase current.
摘要翻译： 在诸如用于将变速发电机的输出转换为恒定频率的自然换向循环换流器的功率转换装置中，提供了一种用于确保功率开关装置的换向的终止停止控制电路，其包括用于整流和 反转端停。 定时波发生器与发生器输出相位锁定，但可由可能独立于源的可变系统参数导出的终止偏置信号控制，例如负载电流，以提供对过载电流引起的转换器故障的及时保护。 还提供了一种过电流检测器，对于每个相，采用一对以电压跟随器结构连接的高压摆率，高电流单极性输出运算放大器与公共上拉电阻器和公共负载电容器，以产生峰值电流信号 代表交变相电流的正峰值和负峰值越大。
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10.发明授权Apparatus and method for reducing overvoltage transients on the outputs of a VSCF system 失效降低VSCF系统输出的过压瞬变的装置和方法
公开(公告)号：US4225911A
公开(公告)日：1980-09-30
申请号：US960956
申请日：1978-11-15
申请人： Harold G. Carlson
发明人： Harold G. Carlson
CPC分类号： H02M5/272
摘要： An apparatus and method for reducing the overvoltage transients present on the alternating current power signals provided by the cycloconverters of a variable speed constant frequency (VSCF) system during the first several cycles of the alternating current after a load reduction or no-load condition occurs. An overvoltage transient reduction circuit is connected to each of the plurality of D.C. control signals provided by the phase voltage regulators to the waveform generator of a conventional VSCF system. The overvoltage transient circuit and method of the present invention senses the current amplitude level in each of the alternating current power signals in the VSCF system, and automatically reduces the voltage amplitude levels of the D.C. control signals provided by the phase voltage regulators to a preselected lower level within one-half cycle of the alternating current after a load reduction occurs. This reduction in the amplitude level of the D.C. control signals is maintained by the circuit and method of the present invention until the voltage regulating control loop of the conventional VSCF system can again assume control of the voltage levels of the alternating current power signals.
摘要翻译： 发生在负载减轻或空载状态之后的交流电的前几个周期期间减小由可变速度恒定频率（VSCF）系统的循环变换器提供的交流电力信号上存在的过电压瞬变的装置和方法。 过电压瞬变降低电路被连接到由相电压调节器提供给多个直流控制信号的传统VSCF系统的波形发生器。 本发明的过电压瞬变电路和方法检测VSCF系统中的每个交流电力信号中的电流幅度电平，并且自动将由相电压调节器提供的DC控制信号的电压幅度电平降低到预选的较低 在发生负载减少之后的交流电的半个周期内的电平。 通过本发明的电路和方法来维持直流控制信号的振幅电平的这种降低，直到常规VSCF系统的电压调节控制环路再次可以控制交流电源信号的电压电平。
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