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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.
What else can I help you with?
What are the differences of Long shunt vs short shunt generator?
In long shunt the shunt field winding is in parallel to both generator and series field. In short shunt the shunt field is in parallel to generator only.
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.
Can you use a compound generator as a booster why?
Yes, a compound generator can be used as a booster because it has both series and shunt windings, allowing it to maintain voltage stability under varying load conditions. The series winding increases the output voltage in response to increased load, while the shunt winding provides a stable base voltage. This combination enables the generator to compensate for voltage drops, effectively boosting voltage when needed in electrical systems.
What is comulative compound wound generator?
A cumulative compound wound generator is a type of electrical generator that combines features of both series and shunt winding configurations. It has a series winding connected to the armature and a shunt winding connected to the field, allowing it to maintain a stable output voltage while providing high starting torque. This design is particularly useful in applications requiring variable loads, as it can adjust its output to meet demand efficiently. The cumulative aspect refers to the way the magnetic fields from both windings work together to enhance the generator's performance.
What is a flat compounded generator?
A flat compounded generator is a type of electrical generator that maintains a constant voltage output despite variations in load. It achieves this by using a combination of series and shunt windings, which allows it to adjust the field strength in response to changes in the load. This design helps to provide stable voltage and is often used in applications where consistent performance is crucial, such as in power supply systems. The term "flat compounded" refers to the specific way the generator’s field windings are configured to achieve this balance.
What are the differences of Long shunt vs short shunt generator?
In long shunt the shunt field winding is in parallel to both generator and series field. In short shunt the shunt field is in parallel to generator only.
What is shunt and series motor?
A series motor is one in which the field windings are in series with the armature windings. So the torque is proportional to the square of the supply current.'Shunt' is an archaic term for 'parallel'. So a shunt motor is one in which the field winding is in parallel with the armature windings. So the torque is proportional to the supply current.
How compound generator operates?
It works with two reactor coils for excitation of the field reactor coil , which in turn provides current to the field. The two reactor coils are connected in shunt and series with the output of the generator stator or armature ( from where load is connected).
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.
Can you use a compound generator as a booster why?
Yes, a compound generator can be used as a booster because it has both series and shunt windings, allowing it to maintain voltage stability under varying load conditions. The series winding increases the output voltage in response to increased load, while the shunt winding provides a stable base voltage. This combination enables the generator to compensate for voltage drops, effectively boosting voltage when needed in electrical systems.
What is excitation in generator and 2 methods each?
when the current is passing through the winding then it is called "Excitation". Types of excitation (1)seperately excited generator. (2)self excited generator. self generator is classified into 3 types. 1.shunt generator. 2.series generator. 3.compound generator. compoud generator is again classified into 2 types. 1.short shunt generator. 2.long shunt generator.
What is the difference between a seperately excited DC generator and DC shunt generator?
The difference between a separately excited DC generator and a Shunt DC generator is that for a separately excited Dc generator , the excitation field winding is supplied by an external source different from that supplying the armature while for shunt generator, the excitation field windind is connected in series with the armature and supplied by a single source.
What is a flat compounded generator?
A flat compounded generator is a type of electrical generator that maintains a constant voltage output despite variations in load. It achieves this by using a combination of series and shunt windings, which allows it to adjust the field strength in response to changes in the load. This design helps to provide stable voltage and is often used in applications where consistent performance is crucial, such as in power supply systems. The term "flat compounded" refers to the specific way the generator’s field windings are configured to achieve this balance.
What is the work principle of compound generator?
A compound generator combines the features of both series and shunt wound generators to improve voltage regulation and load handling. It has two sets of field windings: one in series with the armature (series field) and another connected in parallel (shunt field). The series field increases its magnetic field strength with load, enhancing output voltage under high load conditions, while the shunt field provides stability and maintains voltage under varying load conditions. This configuration allows compound generators to effectively manage load variations while providing a stable output voltage.
How do you determine that the field curents in a compound generator are aiding or canceling each other?
To determine if the field currents in a compound generator are aiding or canceling each other, you need to consider the connection of the field windings. In a compound generator, the series field winding is connected in series with the armature, while the shunt field winding is connected in parallel. If the current in the series winding flows in the same direction as the shunt field current, they are aiding each other, enhancing the overall magnetic field. Conversely, if they flow in opposite directions, they are canceling each other, which can lead to reduced output voltage.
What are different methods of excitation of dc generator?
when the current is passing through the winding then it is called "Excitation". Types of excitation (1)seperately excited generator. (2)self excited generator. self generator is classified into 3 types. 1.shunt generator. 2.series generator. 3.compound generator. compoud generator is again classified into 2 types. 1.short shunt generator. 2.long shunt generator.
Is the dc shunt motor does not have any brushes?
No. A d.c. 'shunt' motor is one whose stator's field windings are connected in parallel with its rotor windings ('shunt' is simply an archic term for 'parallel'); it does not mean that the rotor can function without brushes.
