发明名称 |
Damping of resonant peaks in an electric motor which is operated using a converter with an intermediate voltage circuit, by means of a matched impedance to ground at the motor star point, and a corresponding electric motor |
摘要 |
A system and method for damping of resonant peaks in an electric motor which is operated using a converter with an intermediate voltage circuit, by means of a matched impedance to ground at the motor star point, and a corresponding electric motor is disclosed. In a converter system having an intermediate voltage circuit which operates with a mains system input inductor in the step-up converter mode or has other input-side inductances, there is a risk of natural system oscillations being formed via discharge capacitances in conjunction with motors. If the motor now has an amplitude/frequency response with a pronounced resonant frequency in the region of such natural system oscillations, then there is a risk of higher voltages occurring at the motor star point than in the motor phases. This is prevented by the present invention by a termination of the lattice network, which is formed by the winding sections, in the motor at the motor star point by means of a suitably selected impedance with respect to ground, which advantageously comprises a series circuit formed from a non-reactive resistance and a capacitance.
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申请公布号 |
US2002113562(A1) |
申请公布日期 |
2002.08.22 |
申请号 |
US20010918676 |
申请日期 |
2001.07.31 |
申请人 |
RAITH SEBASTIAN;SEGGER BERND |
发明人 |
RAITH SEBASTIAN;SEGGER BERND |
分类号 |
H02M1/12;H02P29/00;(IPC1-7):H02P1/00 |
主分类号 |
H02M1/12 |
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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