专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP3029478A1 ASSESSMENT METHOD FOR A MULTI-PHASE POWER SYSTEM 有权转让
标题翻译： PRÜFVERFAHRENFÜREINEN MEHRPHASIGEN STROMVERSORGUNGSSYSTEM
公开(公告)号：EP3029478A1
公开(公告)日：2016-06-08
申请号：EP15192070.9
申请日：2015-10-29
申请人： Rolls-Royce plc
发明人： Nadarajan,, Sivakumar , Jayasinghe, Gamini , Gupta, Amit Kumar , Gajanayake, Chandana , Viswanathan, Vaiyapuri
IPC分类号： G01R31/34 , G01R31/08 , G01R29/16
CPC分类号： G01R31/40 , G01R29/16 , G01R31/343
摘要： A method of assessing a condition of a multi-phase power system comprises the steps of: acquiring a voltage signal and a current signal for each phase of the multi-phase power system; calculating a product of the voltage signal for each phase of the multi-phase power system with one of the current signals such that the product is between a voltage signal for one phase and a current signal for a different phase for at least two of the products; summing the calculated products; and identifying the possible existence of a fault in the multi-phase power system based on a frequency analysis of the summed calculated products.
摘要翻译：一种评估多相电力系统状况的方法包括以下步骤：获取多相电力系统各相的电压信号和电流信号; 使用所述电流信号之一计算所述多相电力系统的每个相位的电压信号的乘积，使得所述乘积位于所述一个相的电压信号与用于至少两个所述乘积的不同相位的电流信号之间 ; 计算产品的总和; 并基于对所计算的产品的频率分析，识别多相电力系统中可能存在的故障。

2. 发明授权

EP3214757B1 ELECTRICAL MACHINE COMPONENT FAILURE DETECTION APPARATUS AND METHOD 有权转让
公开(公告)号：EP3214757B1
公开(公告)日：2019-04-03
申请号：EP16198003.2
申请日：2016-11-09
申请人： Rolls-Royce plc
发明人： Viswanathan, Vaiyapuri , Nadarajan, Sivakumar , Gupta, Amit
IPC分类号： H02P29/00 , H02P29/024 , G01R31/34

3. 发明授权

EP2905630B1 Fault detection in brushless exciters 有权转让
公开(公告)号：EP2905630B1
公开(公告)日：2019-05-01
申请号：EP14198243.9
申请日：2014-12-16
申请人： Rolls-Royce plc
发明人： Viswanathan, Vaiyapuri , Gajanayake, Chandana , Gupta, Amit , Nadarajan, Sivakumar
IPC分类号： G01R31/34 , H02H7/06

4. 发明授权

EP2908148B1 Rectifier diode fault detection in brushless exciters 有权转让
公开(公告)号：EP2908148B1
公开(公告)日：2019-04-03
申请号：EP14198324.7
申请日：2014-12-16
申请人： Rolls-Royce plc
发明人： Viswanathan, Vaiyapuri , Gupta, Amit Kumar , Gajanayake, Chandana Jayampathi , Nadarajan, Sivakumar
IPC分类号： G01R31/34 , H02H7/06 , H02K11/04

5. 发明公开

EP3457545A1 SEGMENTED ELECTRICAL MACHINE 有权转让
公开(公告)号：EP3457545A1
公开(公告)日：2019-03-20
申请号：EP18189093.0
申请日：2018-08-15
申请人： Rolls-Royce plc
发明人： Chong, Ellis , Ramakrishna, Shanmukha , Viswanathan, Vaiyapuri , Wang, Shuai
IPC分类号： H02K19/10 , H02K1/14 , H02K7/18 , H02K41/03
摘要： An electrical machine has a variable reluctance rotor, and a stator formed as an annular array of stator segments. The reluctance of the rotor-to-stator magnetic flux path varies with rotor position whereby the stator segments are magnetically energizable to rotate the rotor. The stator segments are arranged in the array such that, when energized to rotate the rotor, they produce an unbalanced force on the rotor. The machine further has a compensator including one or more balancing segments which are configured to be magnetically energizable to produce a balancing force on the rotor which balances the unbalanced force. The reluctance of the rotor-to-compensator magnetic flux path is substantially invariant with rotor position.

6. 发明授权

EP3029478B1 ASSESSMENT METHOD FOR A MULTI-PHASE POWER SYSTEM 有权转让
公开(公告)号：EP3029478B1
公开(公告)日：2019-07-10
申请号：EP15192070.9
申请日：2015-10-29
申请人： Rolls-Royce plc
发明人： Nadarajan,, Sivakumar , Jayasinghe, Gamini , Gupta, Amit Kumar , Gajanayake, Chandana , Viswanathan, Vaiyapuri
IPC分类号： G01R31/34 , G01R31/08 , G01R29/16

7. 发明公开

EP3306284A1 A METHOD AND APPARATUS FOR DIAGNOSING A FAULT CONDITION IN AN ELECTRIC MACHINE 审中-公开
标题翻译：一种诊断电机故障状态的方法和装置
公开(公告)号：EP3306284A1
公开(公告)日：2018-04-11
申请号：EP17191278.5
申请日：2017-09-15
申请人： Rolls-Royce plc
发明人： Nadarajan, Sivakumar , Gupta, Amit , Viswanathan, Vaiyapuri
IPC分类号： G01H3/04 , G01H3/08 , G01H1/00
CPC分类号： G01R31/346 , G01H1/003 , G01H3/04 , G01H3/08 , G01M1/16
摘要： There is disclosed a method for diagnosing a fault condition in an electric machine 4. The method comprises measuring S2 at least one physical parameter generated during operation of the electric machine 4; analysing S4 the or each measured parameter in a frequency domain; and determining S12 whether the electric machine 4 has a stator or rotor winding fault based on a comparison of an amplitude of the or each analysed parameter at a first predetermined frequency and a first threshold amplitude for the first frequency. The at least one physical parameter comprises a sound generated by the electric machine 4.
摘要翻译：公开了一种用于诊断电机4中的故障状况的方法。该方法包括：测量S2在电机4的操作期间产生的至少一个物理参数; 在频域中分析S4该测量参数或每个测量参数; 以及基于第一预定频率处的所述或每个分析的参数的幅度与所述第一频率的第一阈值幅度的比较来确定S12电机4是否具有定子或转子绕组故障。该至少一个物理参数包括由电机4产生的声音。

8. 发明公开

EP2908148A2 Rectifier diode fault detection in brushless exciters 有权转让
标题翻译：无刷励磁机整流二极管故障检测
公开(公告)号：EP2908148A2
公开(公告)日：2015-08-19
申请号：EP14198324.7
申请日：2014-12-16
申请人： Rolls-Royce plc
发明人： Viswanathan, Vaiyapuri , Gupta, Amit Kumar , Gajanayake, Chandana Jayampathi , Nadarajan, Sivakumar
IPC分类号： G01R31/34
CPC分类号： G01R31/2632 , G01R23/02 , G01R31/343 , G01R31/40 , H02H7/1255 , H02K11/20
摘要： A method of detecting a diode fault in an AC signal rectifier circuit,
the AC signal rectifier circuit including a plurality of diodes, and being arranged to supply a rectified output voltage to a load, wherein the method includes the steps of
deriving an operating value indicative of the ratio of the voltage magnitudes of a first harmonic frequency and another harmonic frequency of the rectified output voltage across the load; and
determining whether a fault has occurred in one or more diodes on the basis of the derived operating value.
The first harmonic frequency is preferably the fundamental harmonic frequency, and/or the another harmonic frequency is preferably the 6 th harmonic frequency.
摘要翻译：一种检测交流信号整流器电路中的二极管故障的方法，所述交流信号整流器电路包括多个二极管，并且布置成将经整流的输出电压供应给负载，其中所述方法包括以下步骤：的整流输出电压的一次谐波频率和另一谐波频率的电压幅度之比; 以及基于所导出的操作值来确定一个或多个二极管中是否发生了故障。一次谐波频率优选为基本谐波频率，和/或另一个谐波频率优选为六次谐波频率。

9. 发明公开

EP2905630A2 Fault detection in brushless exciters 有权转让
标题翻译： Fehlererkennung在bürstenlosenErregern
公开(公告)号：EP2905630A2
公开(公告)日：2015-08-12
申请号：EP14198243.9
申请日：2014-12-16
申请人： Rolls-Royce plc
发明人： Viswanathan, Vaiyapuri , Gajanayake, Chandana , Gupta, Amit , Nadarajan, Sivakumar
IPC分类号： G01R31/34
CPC分类号： G01R31/343 , H02H7/065 , H02P9/00 , H02P9/102 , H02P11/00
摘要： A method for detecting a fault in an exciter circuit, suitable for use in a brushless generator, the exciter circuit including (a) an exciter armature winding, having a plurality of armatures, arranged to generate a multiphase AC signal, each armature of the plurality of armatures providing a respective sub-signal component of the multiphase AC signal, and (b) a rectifier circuit for receiving the sub-signals via the respective armatures, the rectifier circuit comprising a plurality of components arranged to rectify the sub-signals to provide a rectified output signal, wherein the method includes the steps of: acquiring a respective operational sub-value for a first characteristic of each of at least two of the respective sub-signals; deriving an operational value indicative of a relationship between the acquired respective operational sub-values; determining whether a fault has occurred in the exciter circuit on the basis of the derived operational value.
摘要翻译：一种用于检测适用于无刷发电机的励磁电路中的故障的方法，所述励磁电路包括（a）具有多个电枢的激励器电枢绕组，所述激励器电枢绕组被布置成产生多相交流信号，所述多个电枢提供多相AC信号的相应子信号分量的电枢，以及（b）用于经由相应电枢接收子信号的整流电路，整流电路包括多个组件，其被布置成整流子信号以提供整流输出信号，其中所述方法包括以下步骤：获取相应子信号中的至少两个中的每一个的第一特性的相应运算子值; 导出指示所获取的各个操作子值之间的关系的操作值; 基于导出的操作值来确定励磁电路中是否发生故障。

10. 发明公开

EP3306330A1 BRUSHLESS SYNCHRONOUS GENERATOR STATOR WINDING FAULT 有权转让
标题翻译：无刷同步发电机定子绕组故障
公开(公告)号：EP3306330A1
公开(公告)日：2018-04-11
申请号：EP17190386.7
申请日：2017-09-11
申请人： Rolls-Royce plc
发明人： Nadarajan, Sivakumar , Gupta, Amit K , Viswanathan, Vaiyapuri , Gajanayake, Chandana J
IPC分类号： G01R31/34 , G01R23/00 , H02P29/024
CPC分类号： G01R31/346 , F02C3/04 , G01R23/00 , G06F17/30598 , H02P9/107 , H02P29/0243 , H02P2101/25 , H02P2103/20
摘要： A method of classifying a stator winding fault in a brushless synchronous generator (30). Measure an electrical parameter of the stator winding (42). Classify the fault by calculating positive or negative sequence harmonics of the parameter and comparing one or more harmonic component to a threshold.
摘要翻译：一种分类无刷同步发电机（30）中的定子绕组故障的方法。测量定子绕组（42）的电气参数。通过计算参数的正序或负序谐波并将一个或多个谐波分量与阈值进行比较来分类故障。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式