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Can a shunt generator build up its voltage without residual magnetism?
Wiki User
∙ 12y ago
no...because before producing voltage needed to connect the generator to the grid then after it will produced voltage.
Answer
Yes, but only if you have an external d.c. supply to supply the field windings. Such machines are called, 'separately-excited'.
Wiki User
∙ 9y ago
Wiki User
∙ 12y agono. It must be magnetically excited.
However, residual flux is everywhere in minute amounts within ferrous materials,
so it will be an extremely unlikely problem.
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Can a shunt motor be started without residual magnetism?
Yes. The field is provided by the shunt windings, which are connected in parallel with the supply. You may be confusing a motor with a generator, as you cannot start a shunt generatorwithout residual magnetism.
What are the condition of building up a self excited shunt generator?
self excited generator must be started without any external load attached ,an external load will continuously drain off the build up voltage and prevent the generator from reaching its proper operating voltage. also the presence of residual magnetism plays an important role And the field current resistance should be less than critic field circuit resistance
What is powerformer?
voltage transfer without using step up t/f &conventional generator
How many output amps is a 75 KVA generator?
It depends upon the Generator system voltage. For 3 Phase, 600 Volt system, it will be 73 Amps For 3 Phase, 480 Volt system, it will be 90 Amps For 3 Phase, 208 Volt system, it will be 208 Amps
What Generator has shunt windings and series windings?
A 'compund wound' dc generator has shunt winding and a series winding. The shunt winding has a high resistance, and draws only a small current from the armature, but as it has many turns of wire on it, it generates a strong magnetic field. The series winding has only a few turns of wire on it, and, even though it has a large current in it, its magnetic field is usually less than that of the shunt field. Because of this, the compound generator behaves in most ways like a shunt generator, and is controlled in the same way. As it is self-excited, the compound wound generator requires 'residual flux' to start the generating process. The series winding, if connected to AID the shunt field, can boost the field flux as load comes onto the machine and correct for the normal 'droop' in output voltage as the load increases. If set up properly, this correction makes the generator self-regulating. Because the fields aid each-other, this connection is called 'cumulative compounded'. This type of machine is the workhorse of the larger generator market. If the series field winding is connected so it's field OPPOSES the shunt field, then the output voltage of the generator collapses as the machine is loaded up. This connection is referred to as 'differential compounded', and is only used for arc welding generators - they have a high voltage before the arc is struck; a fairly low voltage during welding operations, and if the rod sticks to the work, they shut the generator down without damaging it.
Can a shunt motor be started without residual magnetism?
Yes. The field is provided by the shunt windings, which are connected in parallel with the supply. You may be confusing a motor with a generator, as you cannot start a shunt generatorwithout residual magnetism.
What are the condition of building up a self excited shunt generator?
self excited generator must be started without any external load attached ,an external load will continuously drain off the build up voltage and prevent the generator from reaching its proper operating voltage. also the presence of residual magnetism plays an important role And the field current resistance should be less than critic field circuit resistance
Is it possible to run a generator without voltage?
a big no
What is meant by excitation of a generation?
In a generator there should be residual magnetism to start the voltage production . However maintaining the voltage level is a little more complicated because of drift when loads are applied to the unit. to overcome some of the problems an exciter coil section produces a voltage at a know level. that level used as a reference to increase or lower the output of the main generator. Onan YD units have an output of approximately 24volts if the voltage lags the current by 10% it raises the exciter voltage to offset the lagging voltage. Most generators has an AVR (automatic voltage regulator) that will more closely hold frequency (a function of rpm) voltage and current at an even load. without some excitation the generation process would wonder up and down seeking a midpoint but fluctuating wildly with every output request.
What is powerformer?
voltage transfer without using step up t/f &conventional generator
How do you Jump a car with only a gas powered generator?
Its impossible to do so without damage if not using some sort of voltage regulator. generator is 120v, cars run on 12v.
What is the name of device which can produce direct voltage without rectification?
photo voltaic cell ************************ A dynamo is a generator which produces d.c.
Why does my Car stall when you unhook the battery?
It means that you have an alternator fitted. An alternator needs an amount of battery voltage to generate electricity. A generator/dynamo will make voltage without a battery being present.
What is natural magnetism?
natural magenmtism is magnetism that has ben created naturally or without human interferences
Can you produce electricity even without magnetism?
yes we can produce electricity without magnetism by using semiconductor for example photo diode is used in solar cells.
What are the application of voltage divider biasing?
To get reasonable gain without losing stability of circuit. ANSWER: Is to reduce the input to a lesser value or to match signals impedance
How many output amps is a 75 KVA generator?
It depends upon the Generator system voltage. For 3 Phase, 600 Volt system, it will be 73 Amps For 3 Phase, 480 Volt system, it will be 90 Amps For 3 Phase, 208 Volt system, it will be 208 Amps
