Method and system for power quality protection
    1.
    发明授权
    Method and system for power quality protection 有权
    电力质量保护方法和系统

    公开(公告)号:US08688283B2

    公开(公告)日:2014-04-01

    申请号:US12985120

    申请日:2011-01-05

    IPC分类号: G06F1/28

    摘要: A method for power quality protection includes measurement of electrical and nonelectrical parameters, calculation of additional electrical and nonelectrical parameters, comparison of the value of the calculated parameters with maximum allowed values from a power quality perspective, activation of protection mechanisms for transitioning to a safe mode or for isolation from the bus. The systems and methods may prevent equipment failures when out of the spec power quality is present in the distribution bus and may protect the distribution bus from imposing power quality problems due to equipment failures. Because most of the sensors in the systems of the present invention are already used for other control and protection purposes, there may be no reliability degradation. Most of the calculations and the control logic may be performed digitally for improved reliability and flexibility to modify algorithms.

    摘要翻译: 电力质量保护的方法包括电和非电参数的测量,附加电和非电参数的计算,计算参数的值与电力质量观点的最大允许值的比较,激活转换到安全模式的保护机制 或与公共汽车隔离。 当配电总线中存在规格电源质量不足时,系统和方法可能会阻止设备故障,并可能保护配电总线免受设备故障引起的电源质量问题的影响。 因为本发明的系统中的大多数传感器已经被用于其他控制和保护目的,所以可能没有可靠性降低。 大多数计算和控制逻辑可以以数字方式执行,以提高修改算法的可靠性和灵活性。

    Composite 24-pulse AC to DC power converter having a main rectifier and multiple auxiliary rectifiers
    2.
    发明授权
    Composite 24-pulse AC to DC power converter having a main rectifier and multiple auxiliary rectifiers 有权
    具有主整流器和多个辅助整流器的复合24脉冲AC至DC功率转换器

    公开(公告)号:US08315071B2

    公开(公告)日:2012-11-20

    申请号:US12611752

    申请日:2009-11-03

    IPC分类号: H02M7/515

    CPC分类号: H02M7/08 H02M1/12

    摘要: A 24-pulse composite AC-to-DC converter is a converter using two or more conversion methods in parallel. The converter may include a main rectifier receiving at least a portion of an input AC signal, an autotransformer having an output voltage with lower amplitude than the input AC signal, and a plurality of auxiliary bridge rectifiers, each receiving the output from each leg of the autotransformer. In one embodiment of the invention, the main rectifier may receive a substantial portion of the load current, allowing each of the auxiliary bridge rectifiers to be generally smaller than the main rectifier.

    摘要翻译: 24脉冲复合AC-DC转换器是使用两个或更多个并行转换方法的转换器。 转换器可以包括接收输入AC信号的至少一部分的主整流器,具有比输入的AC信号的幅度更小的输出电压的自耦变压器,以及多个辅助桥式整流器,每个辅助桥式整流器接收来自 自耦变压器 在本发明的一个实施例中,主整流器可以接收大部分负载电流,允许每个辅助桥式整流器通常小于主整流器。

    Method for mitigating negative sequence effect resulting from non-symmetrical short circuit failure of synchronous electric machine based systems
    3.
    发明授权
    Method for mitigating negative sequence effect resulting from non-symmetrical short circuit failure of synchronous electric machine based systems 有权
    用于减轻由同步电机系统的非对称短路故障引起的负序效应的方法

    公开(公告)号:US08125747B2

    公开(公告)日:2012-02-28

    申请号:US12405123

    申请日:2009-03-16

    IPC分类号: H02H7/08

    CPC分类号: H02P29/032

    摘要: A drive system for a multi-phase electric machine with a permanent magnet rotor, the drive system may comprise conduction paths for each phase. Detectors on each of the conduction paths may determine electrical condition of the conduction path. At least one selectable interconnection path may be present between all of the conduction paths and at least one selectable interconnection path may be operable to connect all of the conduction paths together responsively to at least one of the detectors determining that the electrical condition of its respective electrical path is representative of a predetermined electrical fault condition so that heating of the rotor during continued rotation of the rotor is prevented.

    摘要翻译: 一种用于具有永磁转子的多相电机的驱动系统,该驱动系统可包括每相的传导路径。 每个传导路径上的检测器可以确定传导路径的电气状况。 至少一个可选择的互连路径可以存在于所有导电路径之间,并且至少一个可选择的互连路径可以可操作以将所有传导路径连接在一起,以响应于至少一个检测器,确定其各自的电气 路径代表预定的电气故障状况,从而防止转子继续旋转期间加热转子。

    METHOD AND SYSTEM FOR IMPROVING PEAK POWER CAPABILITY OF AN AIRCRAFT
    4.
    发明申请
    METHOD AND SYSTEM FOR IMPROVING PEAK POWER CAPABILITY OF AN AIRCRAFT 有权
    改进飞机峰值功率的方法和系统

    公开(公告)号:US20100066165A1

    公开(公告)日:2010-03-18

    申请号:US12211766

    申请日:2008-09-16

    IPC分类号: B60L1/00

    摘要: A method and system for improving peak power capability in an electrical system is disclosed. The system may include an auxiliary generator operated in conjunction with one or more main engine generators during the need for increased transient load demands. The system may include a main engine generator, an auxiliary generator, an inverter/converter controller (ICC) connected to respective generators, a semi-conductor power device connected between the ICCs, and a main bus between the semi-conductor power device and a load.

    摘要翻译: 公开了一种用于提高电气系统中的峰值功率能力的方法和系统。 该系统可以包括在需要增加的瞬时负载需求的同时与一个或多个主发动机发电机结合操作的辅助发电机。 该系统可以包括主发动机发电机,辅助发电机,连接到各个发电机的逆变器/转换器控制器(ICC),连接在ICC之间的半导体电力装置以及半导体电力装置和 加载。

    Overload control of an electric power generation system with unknown availability of mechanical power capacity
    6.
    发明授权
    Overload control of an electric power generation system with unknown availability of mechanical power capacity 有权
    具有机械功率容量不明的发电系统的过载控制

    公开(公告)号:US08058850B2

    公开(公告)日:2011-11-15

    申请号:US12124543

    申请日:2008-05-21

    IPC分类号: H02P11/00 H02P9/00 H02H7/06

    CPC分类号: H02P9/006 H02P2101/30

    摘要: A control system for an electrical power generation system (EPGS) provides overload protection without disconnecting a generator of the EPGS from an excessive electrical load. Available engine power and current levels of the electrical load are continuously measured and computed. A command voltage is calculated in real time that corresponds to a voltage required to sustain with the maximum available power. Output voltage of a generator of the EPGS is controlled at the calculated command voltage so that a power limit of the engine is not exceeded during electrical overload conditions.

    摘要翻译: 用于发电系统(EPGS)的控制系统提供过载保护,而不断开EPGS的发电机与过大的电负载。 连续测量和计算可用的发动机功率和电气负载的电流水平。 以与最大可用功率维持所需的电压相对应的实时计算命令电压。 EPGS的发电机的输出电压被控制在计算出的指令电压,使得在电气过载条件下不超过发动机的功率极限。

    OVERLOAD CONTROL OF AN ELECTRIC POWER GENERATION SYSTEM WITH UNKNOWN AVAILABILITY OF MECHANICAL POWER CAPACITY
    7.
    发明申请
    OVERLOAD CONTROL OF AN ELECTRIC POWER GENERATION SYSTEM WITH UNKNOWN AVAILABILITY OF MECHANICAL POWER CAPACITY 有权
    具有未知的机械功率可用性的电力发电系统的过载控制

    公开(公告)号:US20090290270A1

    公开(公告)日:2009-11-26

    申请号:US12124543

    申请日:2008-05-21

    IPC分类号: H02P9/10 H02H7/06

    CPC分类号: H02P9/006 H02P2101/30

    摘要: A control system for an electrical power generation system (EPGS) provides overload protection without disconnecting a generator of the EPGS from an excessive electrical load. Available engine power and current levels of the electrical load are continuously measured and computed. A command voltage is calculated in real time that corresponds to a voltage required to sustain with the maximum available power. Output voltage of a generator of the EPGS is controlled at the calculated command voltage so that a power limit of the engine is not exceeded during electrical overload conditions.

    摘要翻译: 用于发电系统(EPGS)的控制系统提供过载保护,而不断开EPGS的发电机与过大的电负载。 连续测量和计算可用的发动机功率和电气负载的电流水平。 以与最大可用功率维持所需的电压相对应的实时计算命令电压。 EPGS的发电机的输出电压被控制在计算出的指令电压,使得在电气过载条件下不超过发动机的功率极限。

    Excitation controlled synchronous permanent magnet machine

    公开(公告)号:US20070046266A1

    公开(公告)日:2007-03-01

    申请号:US11210311

    申请日:2005-08-24

    IPC分类号: H02H7/06 H02P9/00 H02P11/00

    CPC分类号: H02P9/48

    摘要: The present invention provides an apparatus and methods for providing constant voltage from a permanent magnet generator at varying prime mover speeds or under varying loads. A constant voltage permanent magnet generator includes a housing, a magnetized rotor, a prime mover operationally coupled with the rotor, a stator, a main winding coupled to the stator, and an excitation winding also coupled to the stator. A controllable three-phase inverter may be coupled to the excitation winding and a control system operationally coupled to the main winding for measuring the voltage of the main winding. The control system is further operationally coupled between the power source and the controllable three phase inverter to provide a supplemental current to the excitation winding such that a combined current through the main winding and the excitation winding produces a constant voltage from the generator.

    Composite AC-to-DC power converter using midpoint method
    9.
    发明授权
    Composite AC-to-DC power converter using midpoint method 有权
    使用中点法的复合交流 - 直流电源转换器

    公开(公告)号:US08755207B2

    公开(公告)日:2014-06-17

    申请号:US13271785

    申请日:2011-10-12

    IPC分类号: H02M7/06

    CPC分类号: H02M1/12 H02M7/08

    摘要: A 24-pulse and 18-pulse composite AC-to-DC converter is a converter using two or more conversion methods in parallel. The converter may include a main rectifier receiving at least a portion of an input AC signal, an autotransformer having an output voltage with lower amplitude than the input AC signal, and a plurality of auxiliary bridge rectifiers, each receiving the output from each leg of the autotransformer. In one embodiment of the invention, the main rectifier may receive a substantial portion of the load current, allowing each of the auxiliary bridge rectifiers to be generally smaller than the main rectifier.

    摘要翻译: 24脉冲和18脉冲复合AC-DC转换器是使用两个或更多个并行转换方法的转换器。 转换器可以包括接收输入AC信号的至少一部分的主整流器,具有比输入的AC信号的幅度更小的输出电压的自耦变压器,以及多个辅助桥式整流器,每个辅助桥式整流器接收来自 自耦变压器 在本发明的一个实施例中,主整流器可以接收大部分负载电流,允许每个辅助桥式整流器通常小于主整流器。

    Method and system for improving peak power capability of an aircraft
    10.
    发明授权
    Method and system for improving peak power capability of an aircraft 有权
    提高飞机峰值功率能力的方法和系统

    公开(公告)号:US07986057B2

    公开(公告)日:2011-07-26

    申请号:US12211766

    申请日:2008-09-16

    IPC分类号: H02J3/00

    摘要: A method and system for improving peak power capability in an electrical system is disclosed. The system may include an auxiliary generator operated in conjunction with one or more main engine generators during the need for increased transient load demands. The system may include a main engine generator, an auxiliary generator, an inverter/converter controller (ICC) connected to respective generators, a semi-conductor power device connected between the ICCs, and a main bus between the semi-conductor power device and a load.

    摘要翻译: 公开了一种用于提高电气系统中的峰值功率能力的方法和系统。 该系统可以包括在需要增加的瞬时负载需求的同时与一个或多个主发动机发电机结合操作的辅助发电机。 该系统可以包括主发动机发电机,辅助发电机,连接到各个发电机的逆变器/转换器控制器(ICC),连接在ICC之间的半导体电力装置以及半导体电力装置和 加载。