会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 1. 发明授权
    • Cross current control for power converter systems and integrated magnetic choke assembly
    • 电力转换器系统和集成式磁阻组件的交流电流控制
    • US06917271B2
    • 2005-07-12
    • US10727390
    • 2003-12-03
    • Richard S. ZhangJames Patrick LyonsLuis Jose GarcesXiaoming Yuan
    • Richard S. ZhangJames Patrick LyonsLuis Jose GarcesXiaoming Yuan
    • H02M5/45H02M7/217H02M7/48H02M7/493H01F27/34
    • H02M7/493H01F37/00H02M5/45H02M7/217
    • A cross current control system for multiple, parallel-coupled power converters includes common mode chokes, local cross current feedback controllers, and local converter controllers. Each common mode choke is coupled to a respective power converter. Each local cross current feedback controller is configured for receiving common mode cross currents from a respective local cross current detector, calculating a resultant cross current, and generating a local feedback control signal. Each local converter controller is configured for using a respective local feedback control signal to drive the respective power converter in accordance with a coordinated switching pattern. An integral choke assembly includes a common mode choke and a differential mode choke with common and differential mode choke cores configured with at least one magnetic flux path being shared by magnetic flux generated by common mode coils and differential mode coils.
    • 用于多个并联耦合的功率转换器的交叉电流控制系统包括共模扼流圈,局部交叉电流反馈控制器和本地转换器控制器。 每个共模扼流圈耦合到相应的功率转换器。 每个局部交叉电流反馈控制器被配置为从相应的局部交叉电流检测器接收共模交叉电流,计算合成的交叉电流以及产生局部反馈控制信号。 每个本地转换器控制器被配置为使用相应的本地反馈控制信号来根据协调的切换模式来驱动相应的功率转换器。 整体式扼流圈组件包括共模扼流圈和具有公共和差模扼流圈的差模扼流圈,其配置有由共模线圈和差模线圈产生的磁通共享的至少一个磁通路径。
    • 5. 发明授权
    • Switched reluctance machine with toothed-wheel rotor sensor
    • 带齿轮转子传感器的开关磁阻电机
    • US5864217A
    • 1999-01-26
    • US854127
    • 1997-05-08
    • James Patrick LyonsMark Alan Preston
    • James Patrick LyonsMark Alan Preston
    • H02P25/08G05B1/06
    • H02P25/089
    • An apparatus and method for estimating rotor position in and commutating a switched reluctance motor (SRM), using both a flux/current SRM angle estimator and a toothed wheel generating a magnetic pickup. Commutation is based on the flux/current SRM at startup and lower speeds. At higher speeds, when magnetic pickup sensed from the toothed wheel is sufficiently large in amplitude to create frequent reliable interrupts, commutation is based on signals from the toothed wheel magnetic pickup. Phase errors can be compensated by adjusting the angle input to the commutator as a function of estimated speed. Alternatively, the flux/current SRM angle estimator can be run in a background mode to tune the toothed wheel interrupt angle signal at different speeds.
    • 使用磁通/电流SRM角度估计器和产生磁性拾取器的齿轮来估计开关磁阻电动机(SRM)中的转子位置和换向的装置和方法。 换向是基于启动时的通量/电流SRM和较低的速度。 在更高的速度下,当从齿轮感测到的磁性拾音器的振幅足够大以产生频繁的可靠中断时,换向是基于来自齿轮磁性拾取器的信号。 通过调整输入到换向器的角度作为估计速度的函数可以补偿相位误差。 或者,通量/电流SRM角度估计器可以在背景模式下运行,以以不同的速度调谐齿轮中断角度信号。
    • 6. 发明授权
    • Voltage clamp snubbers for three level converter
    • 三电平转换器的电压钳位缓冲器
    • US5982646A
    • 1999-11-09
    • US108043
    • 1998-06-30
    • James Patrick LyonsPaul Martin EspelageVlatko VlatkovicJing Wang
    • James Patrick LyonsPaul Martin EspelageVlatko VlatkovicJing Wang
    • H02M1/34H02M7/48H02M7/487H02M7/521
    • H02M7/487H02M1/34H02M2001/346Y02B70/1491
    • A three-level NPC converter includes at least one phase leg including four series coupled electrical switches having a first pair junction between the first two switches and a second pair junction between the second two switches. First and second inner switch snubber capacitors are coupled in series at a neutral junction. First and second inner switch snubber diodes are respectively coupled to the first and second pair junctions and respectively coupled at first and second inner diode-capacitor junctions to the first and second inner switch snubber capacitors. First and second inner switch snubber resistors are respectively coupled between the first and second inner diode-capacitor junctions and respective portions of a DC bus. In one embodiment, the NPC converter further includes first and second outer switch snubber diodes coupled between respective first and second inner diode-capacitor junctions and respective portions of the DC bus. This embodiment may further include first and second outer switch snubber capacitors coupled in parallel with respective first and second inner switch snubber capacitors.
    • 三电平NPC转换器包括至少一个相位支路,包括四个串联耦合的电开关,该电气开关具有在前两个开关之间的第一对结和第二个两个开关之间的第二对结。 第一和第二内部开关缓冲电容器在中性点处串联耦合。 第一和第二内部开关缓冲二极管分别耦合到第一和第二对结,并且分别在第一和第二内部二极管 - 电容器结处耦合到第一和第二内部开关缓冲电容器。 第一和第二内部开关缓冲电阻分别耦合在第一和第二内部二极管 - 电容器接头和DC总线的相应部分之间。 在一个实施例中,NPC转换器还包括耦合在相应的第一和第二内部二极管 - 电容器结之间的第一和第二外部开关缓冲二极管以及DC总线的相应部分。 该实施例还可以包括与相应的第一和第二内部开关缓冲电容器并联耦合的第一和第二外部开关缓冲电容器。