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51.发明授权Duty ratio control for a vehicular generator responsive to low and high power loads 失效响应于低功率和高功率负载的车辆发电机的占空比控制
公开(公告)号：US5754030A
公开(公告)日：1998-05-19
申请号：US670314
申请日：1996-07-16
CPC分类号： H02P9/305 , H02J7/245 , H02P2101/45 , Y02T10/7005 , Y02T10/92
摘要： Duty ratio of a power switching transistor connected to the field coil is controlled according to whether or not a high-power load is connected. When the high power load is not connected, the duty ratio is made 60%, for example, so that excessive power not generated. On the other hand, when the high power load is connected, the duty ratio is increased to 100% so that full power is generated by the generator. The power switching transistor is also controlled according to the battery voltage in a well known manner.
摘要翻译： 连接到励磁线圈的功率开关晶体管的占空比根据大功率负载是否被连接来控制。 当未连接高功率负载时，占空比为例如60％，使得不产生过大功率。 另一方面，当高功率负载连接时，占空比增加到100％，从而发电机产生全功率。 功率开关晶体管也以公知的方式根据电池电压进行控制。
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公开(公告)号：US5710471A
公开(公告)日：1998-01-20
申请号：US460037
申请日：1995-06-02
IPC分类号： B60L11/12 , H02H7/06 , H02J7/14 , H02J7/16 , H02J7/28 , H02K1/22 , H02K1/24 , H02K1/27 , H02K3/28 , H02K3/51 , H02K9/02 , H02K9/06 , H02K11/00 , H02K16/00 , H02K16/02 , H02K19/10 , H02K19/28 , H02K19/36 , H02K21/04 , H02K21/14 , H02P9/00 , H02P9/08 , H02P9/30
CPC分类号： H02K1/276 , H02J7/1423 , H02J7/1438 , H02J7/1461 , H02J7/163 , H02J7/28 , H02K1/24 , H02K1/2773 , H02K16/00 , H02K16/02 , H02K19/28 , H02K19/36 , H02K19/365 , H02K21/042 , H02P25/16 , H02P9/305 , H02H7/067 , H02K1/2713 , H02K19/103 , H02K3/51 , H02K9/06 , H02P2101/45 , Y02T10/7005
摘要： A hybrid alternator includes a stator and a rotor, with the rotor having longitudinally separate wound field and permanent magnet rotor portions. A rotor excitation circuit applies a forward polarity to the wound field rotor portion to increase output in a boosting mode at low RPMs and a reverse polarity to decrease output at high RPMs in a bucking mode to maintain a constant voltage output. Alternative embodiments combine a magnetic flux concentrating design for efficient low speed operation with integral strength for high speed capability. Dual voltage output is provided either through dual stator windings or through a voltage converter circuit. Single voltage output is provided using only one stator winding. A three state voltage regulator allows voltage regulation without inducing reverse currents onto the power bus in the lightly loaded or no battery conditions.
摘要翻译： 混合式交流发电机包括定子和转子，其中转子具有纵向分离的缠绕磁场和永磁转子部分。 转子励磁电路向绕线磁场转子部分施加正极性，以在低转速和相反极性的升压模式下增加输出，从而在降压模式下以高转速降低输出，以保持恒定的电压输出。 替代实施例将用于高效低速运行的磁通集中设计结合在一起，具有用于高速能力的整体强度。 通过双定子绕组或通过电压转换器电路提供双电压输出。 仅使用一个定子绕组提供单电压输出。 三态电压调节器允许电压调节，而不会在轻载或无电池条件下在电源总线上产生反向电流。
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公开(公告)号：US5694026A
公开(公告)日：1997-12-02
申请号：US564036
申请日：1995-12-12
申请人： Alain Blanchet
发明人： Alain Blanchet
CPC分类号： F01D19/00 , F01D15/10 , H02P9/08 , H02P9/42 , F05D2220/76
摘要： The invention relates to a turbine generator set comprising a turbine and a generator coupled to each other without a step-down gear box, and a static frequency converter connected in series between said generator and an AC electricity grid having a given operating frequency, said static frequency converter operating while the turbine generator set is generating electricity to convert the frequency of the voltage and of the current delivered by the generator into the given operating frequency of the AC electricity grid. According to the invention, while the turbine generator set is being started, said static frequency converter powers the generator which operates as a motor so as to ignite the combustion chambers of the turbine, by taking power from the AC electricity grid.
摘要翻译： PCT No.PCT / FR95 / 00475 Sec。 371 1995年12月12日第 102（e）日期1995年12月12日PCT提交1995年4月12日PCT公布。 出版物WO95 / 28764 日期1995年10月26日本发明涉及一种涡轮发电机组，其包括涡轮机和发电机彼此耦合而没有降压齿轮箱，以及串联连接在所述发电机和具有给定的发电机的交流电网之间的静态变频器 所述静态变频器在涡轮发电机组发电时工作，将发电机输出的电压和电流的频率转换为交流电网的给定工作频率。 根据本发明，当涡轮发电机组正在启动时，所述静态变频器通过从交流电网获取电力来为作为电动机操作的发电机供电，从而点燃涡轮机的燃烧室。
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公开(公告)号：US5663632A
公开(公告)日：1997-09-02
申请号：US503383
申请日：1995-07-17
申请人： Ronald W. Roseman , Kevin E. Rice
发明人： Ronald W. Roseman , Kevin E. Rice
CPC分类号： H02P9/08 , H02P9/102 , H02P2101/30
摘要： Apparatus and method for connecting a generator to an energized bus includes a circuit for determining voltage differential between the generator voltage and the bus voltage; a circuit for connecting the generator to the bus when the voltage differential reaches a predetermined threshold; a circuit for limiting the generator field current during build-up so that the generator reaches a predetermined speed before the generator is connected to the bus.
摘要翻译： 用于将发电机连接到通电总线的装置和方法包括用于确定发电机电压和总线电压之间的电压差的电路; 电路，当所述电压差达到预定阈值时，将所述发电机连接到所述总线; 用于在积聚期间限制发电机励磁电流的电路，使得发电机在发电机连接到总线之前达到预定速度。
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公开(公告)号：US5602470A
公开(公告)日：1997-02-11
申请号：US416780
申请日：1995-04-10
申请人： Walter Kohl , Rainer Mittag , Matthias Hoeber
发明人： Walter Kohl , Rainer Mittag , Matthias Hoeber
摘要： In a circuit arrangement for measuring a starting of rotation of a generator having an exciting winding and three-phase windings, a voltage regulator regulates an output voltage of the generator by influencing an exciting current, the three-phase windings are connected to one another at a point, one of the phase windings is connected to ground via a first resistor, another of the phase windings is connected to ground via a second resistor, a voltage across the first resistor is evaluated as a rotational-speed-dependent alternating voltage, this voltage is compared with a threshold voltage, and the starting of the rotation of the generator is detected when the measured voltage exceeds the threshold voltage.
摘要翻译： PCT No.PCT / DE94 / 00856 Sec。 371日期：1995年4月10日 102（e）1995年4月10日PCT PCT 1994年7月23日PCT公布。 公开号WO95 / 05606 日期1995年2月23日在用于测量具有励磁绕组和三相绕组的发电机的旋转起动的电路装置中，电压调节器通过影响励磁电流来调节发电机的输出电压，三相绕组 一个相绕组通过第一电阻连接到地，另一个相绕组通过第二电阻连接到地，第一电阻两端的电压被评估为转速 - 将该电压与阈值电压进行比较，并且当测量的电压超过阈值电压时，检测发电机的旋转开始。
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公开(公告)号：US5493200A
公开(公告)日：1996-02-20
申请号：US60959
申请日：1993-05-12
CPC分类号： H02P9/08 , H02P2101/30
摘要： A control for a brushless generator operable in starting and generating modes supplies combined AC and DC power to an exciter field winding of the brushless generator during operation in the starting mode. The magnitude of a parameter of the AC power is decreased with increasing rotor speed during operation in the starting mode until a particular rotor speed is reached, following which only DC power is supplied to the exciter field winding.
摘要翻译： 用于在启动和产生模式下可操作的无刷发电机的控制在起动模式下操作期间将无刷发电机的励磁机励磁绕组提供组合的AC和DC功率。 AC功率的参数的大小随着起动模式下的转子转速的增加而减小，直到达到特定的转子速度为止，此后仅向励磁机励磁绕组提供直流电力。
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57.发明授权Switched reluctance starter/generator control system allowing operation with regenerative loads and electrical system employing same 失效开关磁阻起动器/发电机控制系统允许使用再生负载和使用其的电气系统进行操作
公开(公告)号：US5493195A
公开(公告)日：1996-02-20
申请号：US315168
申请日：1994-09-29
CPC分类号： H02P9/40 , H02P2101/30
摘要： An electric power generating system comprises a switched reluctance machine, an inverter having a dc input/output coupled to a dc bus, switches responsive to switching control signals for coupling each of the machine's phase windings to the dc bus, and diodes for cross-coupling each of the phase windings to the dc bus. A controller having a number of control inputs and outputs coupled to the inverter monitors the current flowing in the phase windings and the voltage level on the dc bus, and calculates a maximum and a minimum phase current control signal. The controller modulates the switching control signals to regulate the phase current within a range defined by these control signals to maintain the voltage level at a desired level. Upon calculating a positive phase current control signal, the controller generates switching control signals to enable switches at a fixed angle prior to alignment, and generates switching control signals to disable the switches at a fixed angle after alignment. In this way, the machine generates sufficient electric power to maintain the voltage level at the desired level. Upon calculating a negative phase current control signal, the controller generates switching control signals to enable the switches at a fixed angle prior to alignment, and generates switching control signals to disable one switch at a fixed angle prior to alignment. In this way, the machine dissipates sufficient electric power to maintain the voltage at the desired level.
摘要翻译： 一种发电系统包括开关磁阻电机，具有耦合到直流总线的直流输入/输出的反相器，响应于用于将机器的相绕组中的每一个耦合到直流母线的开关控制信号的开关和用于交叉耦合的二极管 每个相绕组到直流母线。 具有耦合到逆变器的多个控制输入和输出的控制器监视在相绕组中流动的电流和dc总线上的电压电平，并且计算最大和最小相电流控制信号。 控制器调制开关控制信号以在由这些控制信号限定的范围内调节相电流，以将电压电平维持在期望的水平。 在计算正相电流控制信号时，控制器产生开关控制信号，以在对准之前以固定角度启用开关，并且产生开关控制信号以在对准之后以固定角度禁用开关。 以这种方式，机器产生足够的电力以将电压电平维持在期望的水平。 在计算负相电流控制信号时，控制器产生开关控制信号，以便在对准之前以固定的角度启动开关，并且在对准之前产生开关控制信号以使固定角度的一个开关失效。 以这种方式，机器耗散足够的电力以将电压维持在期望的水平。
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58.发明授权Excitation system for a brushless generator having separate AC and DC exciter field windings 失效具有独立的交流和直流励磁励磁绕组的无刷发电机的励磁系统
公开(公告)号：US4939441A
公开(公告)日：1990-07-03
申请号：US427821
申请日：1989-10-27
申请人： P. John Dhyanchand
发明人： P. John Dhyanchand
CPC分类号： H02P9/08 , F02N11/04 , H02P9/36 , H02P2101/30
摘要： An excitation system for a brushless generator includes an exciter portion having a set of polyphase exciter field windings and an additional exciter field winding disposed in a stator of the generator, a source of polyphase, constant-frequency AC power and circuitry coupled to the set of polyphase field winding for connecting the source of polyphase, constant-frequency AC power thereto at a beginning of operation in a starting mode whereby AC power is induced in an exciter portion armature winding by transformer action. AC power is further provided to armature windings of a main generator portion to thereby cause a rotor of the generator to accelerate. An autotransformer is provided to reduce the voltage provided by the source of polyphase AC power prior to application of such power to the polyphase field windings so that the need for an auxiliary inverter is obviated. Thereafter, at least one of the windings of the set of polyphase windings is connected in series with the additional field winding when the speed of the rotor reaches a predetermined speed and a DC current of controlled magnitude is delivered to the series-connected exciter field windings to thereafter allow operation in a generating mode.
摘要翻译： 用于无刷发电机的激励系统包括具有一组多相励磁场励磁绕组的励磁系统和设置在发电机的定子中的附加励磁励磁绕组，多相源，恒频AC电源和耦合到该组的 多相励磁绕组，用于在起动模式的操作开始时将多相交流电源连接到恒定频率交流电源，由此通过变压器动作在励磁部分电枢绕组中感应出交流电力。 AC电力进一步提供给主发电机部分的电枢绕组，从而使发电机的转子加速。 提供自耦变压器以在将多次交流电源提供给多相励磁绕组之前降低由多相交流电源提供的电压，以便消除对辅助逆变器的需要。 此后，当转子的速度达到预定速度并且受控幅度的直流电流被传送到串联的励磁励磁绕组时，多组绕组组中的至少一个绕组与额外的励磁绕组串联连接 之后允许以生成模式进行操作。
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59.发明授权
公开(公告)号：US4883973A
公开(公告)日：1989-11-28
申请号：US227036
申请日：1988-08-01
IPC分类号： B60R16/02 , B60R16/03 , B60R16/033 , B60R16/04 , F02N11/04 , H02J7/14 , H02J7/16 , H02P9/04 , H02P9/08 , H02P9/30
CPC分类号： H02P9/307 , F02N11/04 , H02J7/1492 , H02P9/08 , Y02T10/7005
摘要： A high efficiency automotive electrical system and method of control employing an asynchronous induction machine for performing both starting and generating functions. The induction machine is coupled to the engine through a bimodal gearset which operates as a reduction drive during the starting mode and as a direct drive during the generating mode. A computer-based controller responsive to the battery voltage and the speed of the induction machine maintains given voltage/frequency ratios during both starting and generating to provide efficient operation, and smoothly controls the transition between starting and generating modes. The vehicle electrical loads are supplied at one or more stable voltages produced by a load converter powered by the battery.
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60.发明授权
公开(公告)号：US4856965A
公开(公告)日：1989-08-15
申请号：US260690
申请日：1988-10-21
CPC分类号： H02P9/42 , H02P9/08 , H02P2101/10
摘要： A control system of pumping operation comprises a cycloconverter for converting AC power from a AC power system into AC power having a given frequency, anAC exciting generator-motor, having a stator side electrically connected to the AC power system, having a rotor side electrically connected to the cycloconverter, and having a rotor shaft mechanically coupled to a pump-turbine by which the pumping operation is carried out, a circuit breaker inserted between the AC power system and the AC exciting generator-motor, a rotation speed controller for controlling a rotation speed of the AC exciting generator-motor such that the rotation speed becomes slow when the pumping operation is to be stopped, an AC excitation controller for decreasing a degree of excitation effected by the cycloconverter, wherein decreasing of the excitation degree starts when the rotation speed of the AC exciting generator-motor reaches a given minimum value, and a circuit breaker controller for turning off the circuit breaker when input power, supplied from the AC power system to the AC exciting generator-motor becomes substantially zero.
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