using AC to AC converters without intermediate conversion to DC (H02P27/05 takes precedence)

Introduced: January 2006

Title

Titles differ between systems:

IPC: using AC to AC converters without intermediate conversion to DC

CPC: using AC to AC converters without intermediate conversion to DC (H02P27/05 takes precedence)

Full Title

Full titles differ between systems:

IPC:

Arrangements or methods for the control of AC motors characterised by the kind of supply voltage > using variable-frequency supply voltage, e.g. inverter or converter supply voltage > using AC to AC converters without intermediate conversion to DC

CPC:

Arrangements or methods for the control of AC motors characterised by the kind of supply voltage (of two or more motors H02P5/00; of synchronous motors with electronic commutators H02P6/00; of DC motors H02P7/00; of stepping motors H02P8/00) > using variable-frequency supply voltage, e.g. inverter or converter supply voltage > using AC to AC converters without intermediate conversion to DC (H02P27/05 takes precedence)

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 2006.

Child Classifications

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H02P 27/18 varying the frequency by omitting half waves since 2006 IPC+CPC Available in IPC and CPC