Filter device

Details Filter device Filter device

2003-03-14

2009-10-20

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

Reexamination Certificate

active

07606052

ABSTRACT:
A filter device that suppresses electromagnetic interference generated in an alternating current circuit connected to a power converter with an alternating current output includes: a common mode choke connected to between any one terminal at an input side, an output side, or a direct current link of the power converter and input terminals of the alternating current circuit; and a connecting element that connects an outgoing line from a neutral point of the alternating current circuit to a reference potential point having little potential variation at an upstream of the common mode choke.

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Hiroshi Hasegawa et al., “A Voltage-Source PWM Inverter System Characterised by Sinusoidal Output Voltage With Neithr Common-Mode Nor Normal Mode Voltage ˜Design and Performance of a Passive EMI Filter-” Tokyo Institute of Technology.
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