What types of noise are generated at an inverter unit that has a power semiconductor device built in?

There are two types of noise: conductive noise (noise terminal voltage) and radiation noise. Conductive noise propagates over a conductor or earth wire in a main circuit. It is divided into two groups: normal mode and common mode. Radiation noise is generated within a device and emitted into the air because the device wiring or casing works as an antenna. For details, refer to IGBT’s Application Manual Chapter 10.

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