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Appendix V: Guide for complying with EMC
EMC basics
Electromagnetic compatibility (EMC) describes the ability of electronic and electrical
devices or systems to work properly in the electromagnetic environment and not to generate
electromagnetic interference that influences other local devices or systems.
In other words, EMC includes two aspects: The electromagnetic interference generated
by a device or system must be restricted within a certain limit; the device or system must have
sufficient immunity to the electromagnetic interference in the environment.
EMC of inverters
Inverters, same as other electronic devices, are EMI sources and
receivers.Characteristics of inverter EMC includes:
1.Input current are not sine-wave and with a lot of higher harmonic waves.
2.Output voltage is high-frequency PWM waves which can cause a lot of EMI.
3. The process of reducing inverter EMI is also the process of enhancing inverter
counter-EMI capabilities.
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