The operation of a parametric transformer between two busbars

This paper deals with the operation of a parametric transformer when both the input and output windings are connected to live busbars. The relationship between each core flux and the MMF\´s of the two windings is explained. Based on this relationship, the voltage equations of the device are integrated numerically to obtain the input and output currents and the power-angle characteristics. The effects of the phase angle "δ" between the two busbar voltages on the power flow, efficiency, power factor and harmonic currents are examined. A comparison between the experimental results on a small unit and those obtained from the numerical solution of the equations is also given.