A three-phase generator connected in star generates a phase voltage of Vθ = 220 Vrms and supplies a three-phase load also connected in star. The three phases of the generator are connected to the three loads shown Remember that the return of the current of each charge is through the Neutral.
a) Calculate the phase, line, load and neutral currents
b) Calculate the phase, line and load voltages
c) Calculate the powers of Apparent (S), Real (P) and Reactive (Q)
delivered by the generator
d) Calculate the power factor in each load and the power factor of
the entire system
e) Draw the phasor diagram that shows the "power triangle"
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A three-phase generator connected in star generates a phase voltage of Vθ = 220 Vrms and supplies a three-phase load also connected in star. The three phases of the generator are connected to the thre...
Un generador trifásico conectado en estrella genera un voltaje de fase de Vθ = 220 Vrms y alimenta a una carga trifásica conectada también en estrella. Las tres fases del generador se conectan a las t...
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de fase de Vθ = 220 Vrms y alimenta a una carga trifásica conectada
también en estrella. Las tres fases del generador se conectan a las
tres cargas
mostradas. Recuerde que el regreso de la corriente de cada carga es
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a) Calcule las corrientes de fase, de línea, de carga y en el
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QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system...
Section 2: Three phase circuit Three phase wye connected generator supplies two parallel loads through a...
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Un generador trifásico conectado en estrella genera un voltaje
de fase de Vθ = 220 Vrms y alimenta a una carga trifásica conectada
también en estrella. Las tres fases del generador se conectan a las
tres cargas
mostradas. Recuerde que el regreso de la corriente de cada carga es
a través del Neutro.
a) Calcule las corrientes de fase, de línea, de carga y en el
Neutro
b) Calcule los voltajes de fase, de línea y de carga
c) Calcule...
Question 2: Three phase circuit. (100p) A wye connected generator supplies a delta connected balanced load through short feeder. seree the load line to neutral voltage as reference voltage phase angle zero. 02.1 Q2.2 Q2.3 Q2.4 Draw the equivalent circuit. 10p Calculate the load line-to-neutral voltages and line-to-line voltages. 20p Calculate the delta load currents and feeder currents. 20p Calculate the supply wye connected generator line-to-neutral voltages. Is the obtained values are acceptable? Calculate the generator real and reactive power...
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected
synchronous generator has a resistance 0.5Q/phase and a synchronous
reactance of 5Q/phase. The generator is supplying its rated power
at its rated voltage and at a power factor lagging. The rotational
loss is 2 kW. Calculate:
(a) the power developed,
(b) the power angle,
(c) the voltage regulation, and
(d) the shaft torque.
A 1500-kVA, 6.6 kV, 50 Hz, 6-pole, three-phase, star-connected synchronous generator has a resistance 0.50/phase and a synchronous...
b) The load connected to a three-phase supply comprises three similar coils connected in star. If the phase currents are 10A and the total active power and power factor absorb by the loads are 3kW and 0.8 lagging, respectively. Find: i. The magnitude of phase and line voltages (4 marks) ii. Total apparent power (1 mark) iii. The impedance of each coil. (2 marks) c) If the coil in Q3(b) are now connected in delta to the same three-phase supply,...
Q2 (a) A star connected 6.6kV, 8MVA synchronous generator operating at 7MW and a 0.88 lagging power factor is connected to the Grid. The synchronous reactance is 1.5Ω (i) Calculate the phase current, excitation voltage and load angle. [10] (ii) What is the maximum theoretical power at this excitation? Draw a phasor diagram (to scale) and from this estimate the phase current and power factor when operating at this point. 151
Q2 (a) A star connected 6.6kV, 8MVA synchronous generator...
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QUESTION 6 (MULTI-PHASE SYSTEMS) A 400 v, 50 Hz, three-phase distribution system...
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