by static converters (controlling transformers, reactors or choke coils, e.g. by tap changing H02P13/00)

Full Title

Conversion of AC power input into AC power output, e.g. for change of voltage, for change of frequency, for change of number of phases > without intermediate conversion into DC > by static converters (controlling transformers, reactors or choke coils, e.g. by tap changing H02P13/00)

Child Classifications

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• H02M 5/06 using impedances
• H02M 5/10 using transformers
• H02M 5/20 using discharge tubes without control electrode or semiconductor devices without control electrode
• H02M 5/22 using discharge tubes with control electrode or semiconductor devices with control electrode