变压变频(Variable Voltage Variable Frequency) VVVF

变频器(Variable Frequency Drive) VFD

变速恒频(Variable Speed Constant Frequency) VSCF

变频器(Vfd Variable Frequency Device) VVF

变压恒频(Variable Voltage Constant Frequency) VVCF

变频调速(Variable Frequency Speed Regulation) VFSR

和变速恒频机组(Variable Speed Constant Frequency) VSCF

交流励磁变速恒频(Ac Exited Variable Speed Constant Frequency) AEVSCF

交流变频(Alternating Current Variable Frequency) ACVF