发明名称 |
СПОСОБ КОМПЛЕКСНОГО КОНТРОЛЯ ТРЕХФАЗНОЙ ОБМОТКИ ЭЛЕКТРИЧЕСКОЙ МАШИНЫ |
摘要 |
FIELD: electric engineering; measuring technique. ^ SUBSTANCE: method can be used for inspecting intra-turn isolation and detecting short-circuiting in winding of stator of asynchronous electrical machines. Two pulse sequences superposition is applied to windings of electrical machine from generator with adjusted pulse duration t and delay time t3; sequences have similar periods of T and opposite polarities of pulses. Delay time t3 = tau is set between specified pulse sequences. Pulse duration tau and time delay t3 is subject to change between pulse sequences while meeting the condition of t3 = tau to reach the k-th harmonic with maximal amplitude at frequency of omega0=2kpi/T. Meaning of voltage at output of phase detector is fixed, which value is proportional to difference in phases of harmonics with number of n=k, selected from test voltage by selective units, tuned to frequency of omega0=2kpi/T. Phase windings are subject to place exchange in sequence. Presence of defect in any phase winding is judged from change in voltage at output of phase detector. ^ EFFECT: improved truth of results of measurement; improved sensitivity. ^ 3 dwg |
申请公布号 |
RU2005107405(A) |
申请公布日期 |
2006.08.27 |
申请号 |
RU20050107405 |
申请日期 |
2005.03.16 |
申请人 |
Государственное образовательное учреждение высшего профессионального образовани "Оренбургский государственный университет" (RU) |
发明人 |
Сильвашко Сергей Анатольевич (RU);Булатов Виталий Николаевич (RU);Шевеленко Владимир Дмитриевич (RU) |
分类号 |
G01R31/06 |
主分类号 |
G01R31/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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