DIFF Subgroup
H02P 27/02 using supply voltage with constant frequency and variable amplitude
Introduced: January 2006
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 supply voltage with constant frequency and variable amplitude
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 supply voltage with constant frequency and variable amplitude
Of 2 combined children, 1 exist in both systems.
1 codes are CPC-only extensions.
IPC defines codes here since 2016.
Child Classifications
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- H02P 27/024 using AC supply for only the rotor circuit or only the stator circuit since 2016 IPC+CPC Available in IPC and CPC