However, with a three-phase transformer in the circuit, finding the per-phase equivalent may not be as straight forward. As an example in a single-phase transformer we know that the load impedance, as measured from the secondary side of the transformer, is multiplied by the square of the ...
2.3.2 The equivalent circuit and phasor diagram of a transformer in loaded condition Circuit relationships of a transformer under load 1.Referred winding •Replacing the actual secondary winding with an equivalent winding having the same number of turns as the primary winding •Operation of...
A method of controlling a regulating transformer with a settable translation ratio, switchable between a first and second AC-mains includes the following operations: detecting phasor data of phasors of the first and/or second AC-mains; determining an equivalent circuit diagram with equivalent circuit...
Equivalent Circuit The equivalent circuit is shown in the diagram. Here: RpandRsare the primary and secondary series resistances, respectively. Changes in the tap position affect these values. LlpandLlsare the primary and secondary leakage inductances, respectively. Changes in the tap position affect...
FIG. 3 is a circuit diagram of a switching power supply device using a diode rectifier in accordance with still another embodiment of the present invention FIG. 4 is an equivalent circuit diagram showing the circuit diagram of the switching power supply device using the current sharing transformer...
,得XL=k2XL 4、 副边电压折算 U2=I2ZL=(I2/k)(RL+jXL)k2=kI2(RL+jXL)=kU2 折算后的方程组: 5.3.4等效电路和相量图equivalent circuit and phasor diagram 1.“T”形等效电路和相量图 ①“T”形等效电路:根据方程组5-35可以得到变压器的T型等效电路,如图5-8。 在此等效电路中,在励磁支路rm +...
Bar-type Current Transformer– This type of current transformer uses the actual cable or bus-bar of the main circuit as the primary winding, which is equivalent to a single turn. They are fully insulated from the high operating voltage of the system and are usually bolted to the...
Whenever a full load is connected to the secondary terminals of the transformer, ratedcurrentI2flows through the secondary circuit and voltage drop comes into picture. At this situation, primary winding will also draw equivalent full load current from source. Thevoltage dropin the secondary is I2Z...
FIG. 10 is an equivalent circuit of the circuit configuration shown in FIG. 9. FIG. 11 is a circuit diagram of a conventional ferroresonant three-phase constant voltage transformer. FIG. 12 is a vector diagram for explanation of the operation of the device of FIG. 11. ...
4 is used which is an equivalent circuit diagram for the transformer 100 in its resonant modes, as described in “Piezoelectric transformer operating in thickness extensional vibration and its application to switching converter”, PESC 94, Zaitsu et al. In this circuit, the inductance, resistance...