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公开(公告)号：US09435263B2
公开(公告)日：2016-09-06
申请号：US14282273
申请日：2014-05-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Huazhen Chai , Adam M. White , Mustansir Kheraluwala
Abstract: A thermal stress reduction method includes ramping an electric power generator to start an aircraft engine, for a time period associated with the aircraft engine start sequence toggling a three-level inverter switch array to a three-level pulse width modulation mode, determining if a first time interval in the three-level pulse width modulation mode exceeded a predetermined three-level pulse width modulation mode interval, in response to the first time interval exceeding the three-level pulse width modulation mode interval, toggling the three-level inverter switch array to a two-level pulse width modulation mode, determining if a second time interval in the two-level pulse width modulation mode exceeded a predetermined two-level pulse width modulation mode interval and in response to the second time interval exceeding the two-level pulse width modulation mode interval, toggling the three-level inverter switch array to the three-level pulse width modulation mode.
Abstract translation: 一种热应力降低方法包括使发电机起动飞机发动机，与飞机发动机起动顺序相关联的时间段将三电平逆变器开关阵列切换到三电平脉冲宽度调制模式，确定第一 三电平脉冲宽度调制模式中的时间间隔超过预定的三电平脉冲宽度调制模式间隔，响应于超过三电平脉冲宽度调制模式间隔的第一时间间隔，将三电平逆变器开关阵列切换到 两级脉宽调制模式，确定二电平脉宽调制模式中的第二时间间隔是否超过预定的两级脉宽调制模式间隔，并且响应于超过两级脉冲宽度的第二时间间隔 调制模式间隔，将三电平逆变器开关阵列切换到三电平脉宽调制模式。
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公开(公告)号：US20160013734A1
公开(公告)日：2016-01-14
申请号：US14330668
申请日：2014-07-14
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M7/487 , H02M2001/0048 , Y02B70/1491
Abstract: A phase leg for a multilevel inverter includes a first direct current lead, an outer solid-state switch, an inner solid-state switch, and a midpoint-clamping device. The outer solid-state switch device is connected to the first direct current lead. The inner solid-state switch is connected in series with the outer solid-state switch. The midpoint-clamping device is a bi-directional current flow device connected between a second DC lead and a node between the inner and outer solid-state switches for reducing conduction losses associated with current flowing through the phase leg.
Abstract translation: 用于多电平逆变器的相位支路包括第一直流引线，外部固态开关，内部固态开关和中点钳位装置。 外部固态开关器件连接到第一直流引线。 内部固态开关与外部固态开关串联连接。 中点钳位装置是连接在内部和外部固态开关之间的第二DC引线和节点之间的双向电流流动装置，用于减少与流过相支脚的电流相关的传导损耗。
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公开(公告)号：US20170099014A1
公开(公告)日：2017-04-06
申请号：US14874116
申请日：2015-10-02
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M1/14 , H02M7/487 , H02M7/5395 , H02M2001/0025
Abstract: A method of controlling an inverter includes receiving output voltage target waveforms for phases of an inverter, generating uncompensated midpoint duty cycle waveforms for the inverter phases, selecting an uncompensated midpoint duty cycle waveform for one of the inverter phases based on the magnitudes of the uncompensated midpoint duty cycle waveforms, and applying a compensation signal to the selected uncompensated midpoint duty cycle waveform. An inverter controller and inverter employ the method for generating switch command signals for solid-state switch devices of the inverter.
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公开(公告)号：US09590521B2
公开(公告)日：2017-03-07
申请号：US14444364
申请日：2014-07-28
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White , Mustansir Kheraluwala
CPC classification number: H02M5/458 , H02M5/4585 , H02M7/483
Abstract: A method of converting power includes receiving alternating current (AC) at the first phase leg set of a power conversion system having first and second phase legs sets connected by direct current (DC) leads. The first phase leg set rectifies the received AC power into DC power by switching outer switches of the first phase leg set into an off state. The DC lead conveys the DC power from the first phase leg set to the second phase leg set. The second phase leg set inverts the DC power into AC power.
Abstract translation: 一种转换功率的方法包括在具有通过直流（DC）引线连接的第一和第二相位组的功率转换系统的第一相位支路组上接收交流电（AC）。 第一相支路通过将第一相支路组的外部开关切换到断开状态来将接收到的交流电力整流为直流电力。 直流引线将直流电源从第一相腿组传递到第二相支腿组。 第二相支脚将直流电转换为交流电源。
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公开(公告)号：US09473040B2
公开(公告)日：2016-10-18
申请号：US14297081
申请日：2014-06-05
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White
CPC classification number: H02M7/217
Abstract: A method of controlling a rectifier includes receiving a gain factor, receiving a ramp interval, and generating a rectifier switch control voltage. The rectifier switch control voltage is an over-modulated rectifier switch control voltage generated by a pulse width modulator using the gain factor. The amount of over-modulation in the rectifier switch control voltage is decreased during the ramp interval for reducing transient voltage overshoot events at the start of active rectification.
Abstract translation: 控制整流器的方法包括接收增益因子，接收斜坡间隔，以及产生整流开关控制电压。 整流开关控制电压是由调制后的整流开关控制电压，由脉冲宽度调制器产生的增益系数。 在斜坡间隔期间，整流开关控制电压中的过调制量减少，以减少有源整流开始时的瞬态电压过冲事件。
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Patent Agency Ranking
公开(公告)号：US20150042437A1
公开(公告)日：2015-02-12
申请号：US14167276
申请日：2014-01-29
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White
IPC: H01F27/32
CPC classification number: H01F27/325 , H01F3/14 , H01F5/02 , H01F27/2895
Abstract: A bobbin for spacing windings around an inductor core includes an interior spacer defining an exterior surface for coupling interior spacer with an annular inductor core and an interior facing surface opposing the exterior surface for receiving inductor windings. The interior spacer has a thickness profile between the exterior and interior facing surfaces for spacing the windings inward from the inductor core to reduce magnetic fringe flux effects on the windings. An inductor body includes an inductor core coupled to bobbin. A wound inductor includes windings wrapped around the inductor body formed by the inductor core and bobbin.
Abstract translation: 用于围绕电感器芯线间隔绕组的线轴包括限定用于将内部间隔件与环形电感器芯耦合的外表面的内部间隔件和与外表面相对的用于接收电感器绕组的内表面。 内部间隔件在外表面和内表面之间具有厚度分布，用于将绕组从电感器芯线向内间隔，以减小对绕组的磁条纹通量影响。 电感体包括耦合到线轴的电感芯。 卷绕电感器包括缠绕在由电感器芯和线轴构成的电感体上的绕组。
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公开(公告)号：US20140250910A1
公开(公告)日：2014-09-11
申请号：US14282273
申请日：2014-05-20
Applicant: Hamilton Sundstrand Corporation
Inventor： Huazhen Chai , Adam M. White , Mustansir Kheraluwala
IPC: F02C7/26
Abstract: A thermal stress reduction method includes ramping an electric power generator to start an aircraft engine, for a time period associated with the aircraft engine start sequence toggling a three-level inverter switch array to a three-level pulse width modulation mode, determining if a first time interval in the three-level pulse width modulation mode exceeded a predetermined three-level pulse width modulation mode interval, in response to the first time interval exceeding the three-level pulse width modulation mode interval, toggling the three-level inverter switch array to a two-level pulse width modulation mode, determining if a second time interval in the two-level pulse width modulation mode exceeded a predetermined two-level pulse width modulation mode interval and in response to the second time interval exceeding the two-level pulse width modulation mode interval, toggling the three-level inverter switch array to the three-level pulse width modulation mode.
Abstract translation: 一种热应力降低方法包括使发电机起动飞机发动机，与飞机发动机起动顺序相关联的时间段将三电平逆变器开关阵列切换到三电平脉冲宽度调制模式，确定第一 三电平脉冲宽度调制模式中的时间间隔超过预定的三电平脉冲宽度调制模式间隔，响应于超过三电平脉冲宽度调制模式间隔的第一时间间隔，将三电平逆变器开关阵列切换到 两级脉宽调制模式，确定二电平脉宽调制模式中的第二时间间隔是否超过预定的两级脉宽调制模式间隔，并且响应于超过两级脉冲宽度的第二时间间隔 调制模式间隔，将三电平逆变器开关阵列切换到三电平脉宽调制模式。
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公开(公告)号：US20160307685A1
公开(公告)日：2016-10-20
申请号：US14688892
申请日：2015-04-16
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White , Mustansir Kheraluwala , Frank Z. Feng , Kris H. Campbell , Charles Shepard
CPC classification number: H01F27/18 , H01F27/00 , H01F27/2876 , H01F27/325
Abstract: A transformer assembly includes a housing with a sealed housing interior, a transformer disposed within the housing interior and having a core with windings wrapped about the core, and a condenser mounted to the housing. The condenser is in fluid communication with the housing interior. A surface of the windings bounds a coolant channel extending between the windings and the condenser to convey coolant of a first phase to the condenser and receive coolant of a second phase from the condenser.
Abstract translation: 变压器组件包括具有密封壳体内部的壳体，设置在壳体内部的变压器，并且具有围绕芯部缠绕的绕组的芯体和安装到壳体的冷凝器。 冷凝器与壳体内部流体连通。 绕组的表面限定了在绕组和冷凝器之间延伸的冷却剂通道，以将第一相的冷却剂输送到冷凝器，并从冷凝器接收第二相的冷却剂。
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公开(公告)号：US20160028341A1
公开(公告)日：2016-01-28
申请号：US14338077
申请日：2014-07-22
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White
IPC: H02P25/16 , H02M7/5387
CPC classification number: H02P25/16 , H02M1/12 , H02M1/44 , H02M7/5387 , H02M7/53871 , H02M2001/123 , H02P27/06
Abstract: An electrical system includes a converter having an H-bridge. The H-bridge includes a first set of transistors electrically connected in series and a second set of transistors electrically connected in series. The first set and the second set of transistors are electrically connected in parallel. The H-bridge defines three available switching states such that a common mode voltage across the H-bridge at each switching state is zero. A method for reducing electromagnetic interference (EMI) in pulse-width modulation (PWM) converters includes diagonally switching transistors of the H-bridge. Diagonally switching the transistors of the H-bridge includes constraining available switching states of the H-bridge to only include the switching states with zero common-mode voltage such that common-mode voltage on an AC output side of the H-bridge is zero.
Abstract translation: 电气系统包括具有H桥的转换器。 H桥包括串联电连接的第一组晶体管和串联电连接的第二组晶体管。 第一组和第二组晶体管并联电连接。 H桥定义了三种可用的开关状态，使得在每个开关状态下跨越H桥的共模电压为零。 用于减小脉冲宽度调制（PWM）转换器中的电磁干扰（EMI）的方法包括H桥的对角开关晶体管。 H桥的晶体管的对角切换包括约束H桥的可用开关状态，以仅包括具有零共模电压的开关状态，使得H桥的AC输出侧上的共模电压为零。
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公开(公告)号：US20160028321A1
公开(公告)日：2016-01-28
申请号：US14444364
申请日：2014-07-28
Applicant: Hamilton Sundstrand Corporation
Inventor： Adam M. White , Mustansir Kheraluwala
IPC: H02M5/458
CPC classification number: H02M5/458 , H02M5/4585 , H02M7/483
Abstract: A method of converting power includes receiving alternating current (AC) at the first phase leg set of a power conversion system having first and second phase legs sets connected by direct current (DC) leads. The first phase leg set rectifies the received AC power into DC power by switching outer switches of the first phase leg set into an off state. The DC lead conveys the DC power from the first phase leg set to the second phase leg set. The second phase leg set inverts the DC power into AC power.
Abstract translation: 一种转换功率的方法包括在具有通过直流（DC）引线连接的第一和第二相位组的功率转换系统的第一相位支路组上接收交流电（AC）。 第一相支路通过将第一相支路组的外部开关切换到断开状态来将接收到的交流电力整流为直流电力。 直流引线将直流电源从第一相腿组传递到第二相支腿组。 第二相支脚将直流电转换为交流电源。
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