KR20210122371A - Non-Rotation Type Alternating Current Generator Capable of Mulitplying Output Voltage - Google Patents

Abstract

The present invention relates to a non-rotating alternating current generator capable of increasing output voltage. The non-rotating alternating current generator capable of increasing output voltage comprises: a direct current (DC) power supply part (110); a control part (120) providing a switching signal; and an alternating current output part (130). The alternating current output part (130) includes an iron core (131), pole pieces (133), a field winding (134, 135) receiving the direct current power, and an armature winding (136) wound on the iron core (131) between the pole pieces (133) to output the alternating current power by an induced electromotive force by the field winding (134, 135). The non-rotating alternating current generator further comprises a power supply (140) connected between the alternating current output part (130) and the direct current power supply part (110), and performing the role of supplying power to continuously output an alternating current from the alternating current output part (130) by supplying constant direct current power from the direct current power supply part (110) to the alternating current output part (130). An electromotive force can be obtained by rotation of magnetic flux by movement of electrons simply by turning on/off constant-duty power to the field winding stacked in a unit which is an alternating current output part. Direct current (DC) power is used to supply power by disconnecting power by a set duty. While providing a field with different directivities, an alternate electromotive force of a form similar to rotation of a conventional rotating synchronous generator is generated.

Description

Non-Rotation Type Alternating Current Generator Capable of Mulitplying Output Voltage

The present invention relates to a non-rotational AC generator capable of doubling an output voltage, and more particularly, to a non-rotating AC generator capable of doubling an output voltage made of a structure that can obtain an electromotive force such as physically rotating just by turning off the power. It relates to a non-rotating alternator.

In addition to electric vehicles, the need for high-efficiency AC power generators, such as the use of power at home and emergency power in buildings, is gradually increasing.

As more and more places use electricity, stability and convenience are gradually emerging.

On the other hand, a previously applied and registered technology (registration number 10-1913746, registered on October 25, 2018) by the applicant of the present invention (title of the invention: AC power generator capable of frequency and voltage control) has been disclosed. According to this, although a structure capable of generating a non-rotational alternating current has been proposed, various problems such as a decrease in efficiency due to a large amount of heat generated have occurred.

[Prior art literature]

(Patent Document 0001) Patent Publication No. 10-2014-0078732 (June 25, 2014)

(Patent Document 0002) Japanese Patent Laid-Open No. 2000-353627 (2000.12.19)

An object of the present invention is to solve the problems of the prior art as described above, and problems, stability, and utilization of power loss and efficiency decrease due to external forces such as heat, friction, speed, resistance, etc. of the conventional rotary synchronous generator An object of the present invention is to provide a non-rotating AC generator capable of doubling the non-rotating output voltage in order to solve various problems such as sex and affinity.

Another object of the present invention is to provide a non-rotating AC generator capable of doubling an output voltage that generates an AC power source and improves the problems caused by power loss and efficiency degradation by utilizing the structural advantage of not rotating.

A non-rotating AC power generator capable of doubling an output voltage according to a preferred embodiment of the present invention for achieving the above object includes a DC power supply unit 110; a control unit 120 that provides a switching signal to cut off direct current electricity at a predetermined period and for a predetermined period of time; and an AC output unit 130 configured to convert the DC power into AC power and output it according to a switching signal of the control unit 120 , wherein the AC output unit 130 includes an iron core 131 and the iron core 131 . ) between the magnetic pole pieces 133 arranged in the longitudinal direction, the field windings 134 and 135 wound around the iron core 131 between the pole pieces 133 and supplied with the DC power, and the magnetic pole pieces 133 . As one unit in which a structure including an armature winding 136 wound around the iron core 131 and outputting the AC power by induced electromotive force by the field windings 134 and 135 is stacked, the AC output unit 130 ) and the DC power supply unit 110, so that the DC power from the DC power supply unit 110 is constantly supplied to the AC output unit 130 so that the AC output unit 130 continuously outputs AC. As provided with a power supply 140 (POWER SUPPLY) that serves to supply power,

The electromotive force can be obtained from the rotation of magnetic flux due to the movement of electrons simply by turning the power on/off with a certain duty to the field windings stacked inside the unit, which is the AC output unit, and the power supply is DC ( DC) power is used to cut and supply power according to a predetermined duty, and it is characterized in that it generates an alternating electromotive force similar to the rotation of a conventional rotary synchronous generator while providing different directions to the field.

In addition, the unit that is an AC output has a structure in which the number of armatures is greater than the number of electromagnets, and the total height of the finally stacked units is in close contact with each other due to the increase in compression force, so that it has a compact structure. do.

In addition, the unit is composed of one or more, it is characterized in that each unit can be switched.

In addition, it is characterized in that all armatures constituting the unit have the same height.

As described above, according to the AC power generator capable of doubling the output voltage according to the present invention, the efficiency of the AC generator is improved and the risk of failure is reduced by providing the AC power generator utilizing the structural advantage of not rotating. there is

In addition, there is an effect of being able to provide a high-efficiency AC power generator that is stable and easy to control output, rather than a synchronous generator using the conventional rotational kinetic energy to generate AC power using DC power.

1 is a block diagram showing an AC power generator according to the prior art.
Figure 2 is a schematic diagram showing some components (units) of the AC power generator according to the prior art.
3 is a block diagram illustrating an AC power generator according to an embodiment of the present invention.
4 is a schematic diagram illustrating an example of comparing some components (units) of an AC power generator according to an embodiment of the present invention and some components (units) in the prior art
5 is a schematic diagram illustrating an example of a wiring method of a partial configuration (unit) of an AC power generator according to an embodiment of the present invention and a conventional partial configuration (unit).
6 is a diagram schematically showing the structure of an AC generator (or generator) capable of outputting AC by alternating magnetic flux according to an embodiment of the present invention.
7 is a diagram schematically showing the direction of a magnetic field in the structure of a unit of an AC generator (or generator) capable of AC output by alternating magnetic flux according to an embodiment of the present invention.
8 is a diagram illustrating a state in which the number of units is changed.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail.

However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, preferred embodiments of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, in order to facilitate the overall understanding, the same reference numerals are used for the same components in the drawings, and duplicate descriptions of the same components are omitted.

The AC power generator of the present invention will be described in detail with reference to an embodiment as follows, and the scope of the present invention is not limited to the embodiment.

An embodiment of the present invention relates to an AC power generator utilizing the structural advantage of not rotating.

An embodiment of the present invention is a non-rotational AC generator made of a structure that can obtain an electromotive force such as physically rotating simply by turning off the power.

1 and 2, the conventional AC generator includes a DC power supply unit 110; a control unit 120 that provides a switching signal to cut off direct current electricity at a predetermined period and for a predetermined period of time; and an AC output unit 130 configured to convert the DC power into AC power and output it according to a switching signal of the control unit 120 , wherein the AC output unit 130 includes an iron core 131 and the iron core 131 . ) between the magnetic pole pieces 133 arranged in the longitudinal direction, the field windings 134 and 135 wound around the iron core 131 between the pole pieces 133 and supplied with the DC power, and the magnetic pole pieces 133 . It may include an armature winding 136 wound around the iron core 131 and outputting the AC power by induced electromotive force by the field windings 134 and 135 .

In contrast, according to the present invention of Figures 3 and 4, the AC generator of the present invention includes a DC power supply unit 110; a control unit 120 that provides a switching signal to cut off direct current electricity at a predetermined period and for a predetermined period of time; and an AC output unit 130 configured to convert the DC power into AC power and output it according to a switching signal of the control unit 120 , wherein the AC output unit 130 includes an iron core 131 and the iron core 131 . ) between the magnetic pole pieces 133 arranged in the longitudinal direction, the field windings 134 and 135 wound around the iron core 131 between the pole pieces 133 and supplied with the DC power, and the magnetic pole pieces 133 . may include an armature winding 136 wound around the iron core 131 of ), the DC power from the DC power supply unit 110 is constantly supplied to the AC output unit 130 to continuously supply power so that the AC output unit 130 outputs AC power. A power supply 140 (POWER SUPPLY) is provided.

The control unit 120 may include a rotation switching unit that provides a switching signal to cut off power at a predetermined period, and a rotation control unit that adjusts the speed of the signal of the rotation control unit.

The frequency and voltage of the AC power can be easily adjusted by the control unit 120 .

In the AC output unit 130 , the field winding may be wound around the armature winding on upper and lower portions of the iron core, respectively.

The pole piece of the AC output unit 130 may be formed at the outermost side of the field winding, between the field winding, and between the field winding and the armature winding, respectively.

Due to the advantage of the non-rotating structure of the AC output unit 130, the separation distance error does not occur, and the quality of electricity can be improved. Thermal problems due to inertia may be improved.

The iron core, the pole piece, the winding and the armature winding of the AC output unit 130 constitute a first unit, and the DC power is sequentially supplied to the field windings of the first unit and the second unit to form the armature winding. A single-phase AC power may be output through the

It may further include a second unit having the same configuration as the first unit and a third unit identical to the first unit, wherein the DC power is sequentially supplied to output three-phase AC power through the armature winding.

4, looking at the arrangement between the armature (winding) and the electromagnet (referring to the first and second account windings), the conventional structure (a) is a first account winding (electromagnet) (N pole) between the electromagnet and the electromagnet <->S pole) and the second account winding (electromagnet) (S<->N) are vertically stacked and arranged, and this structure is continuously repeated.

In the conventional unit stacked structure, heat is generated by the energy generated as the electromagnet is repeatedly demagnetized after magnetization, and the amount of heat generated increases, resulting in lower efficiency.

That is, in the case of a stacked structure of a conventional unit, the NS electromagnet generating magnetomotive force and the SN electromagnet are in close contact with each other, and the temperature due to the heat inside the unit due to radiant heat may rise. Therefore, the DUTY ratio of power switching could not be increased, and it was difficult to ensure safety. In addition, as the heat of the electromagnet affects the armature, there is a problem in that an abnormality occurs in the output power. In other words, the most problematic part in the conventional unit structure was the thermal problem. There was a safety problem when running the generator for a long time because of the heat inside the unit.

In addition, in the stacked structure of the previous conventional unit, the number of electromagnets is larger than the number of armatures. However, in the modified stacked structure of the unit of the present invention, even if the number of armatures has a structure greater than the number of electromagnets or has a stacked structure of the same number of armatures and electromagnets as in the prior art, the total height of the finally stacked units is the compression force It is characterized in that it has a compact structure by making it closely contact with each other due to the increase of

In addition, the stacked structure of the conventional unit is limited to one, and has become a single-phase and three-phase structure according to a switching method. However, according to the stacked structure of the units of the present invention, switching is also possible for each unit (???).

On the other hand, in the stacked structure of the unit of the present invention, the height of the armature must be the same (required condition: YOO'S LAW).

Referring to an example of the unit stacked structure of the present invention in FIG. 4, FIG. 4(b) has a different stacked structure in that one NS electromagnet and one SN electromagnet are disposed between the armatures. According to this unit structure, since the NS electromagnet, which generates the magnetomotive force, and the SN electromagnet, which generate the magnetomotive force, are separated from the armature to be linked, the heat caused by the demagnetization of the electromagnet is dispersed, so that the internal heat is not deflected to only one side. Therefore, the DUTY ratio of the power switching is set to a certain ratio or more, and stability of the output can be secured due to the stable switching of the electromagnet. That is, in the structure of FIG. 4(b), the stability of the output power was secured while solving the problem of the previous structure of FIG. 4(a).

In addition, in the present invention, when finishing the unit, unlike the conventional unit (in the conventional unit, a short circuit occurred in the iron piece of the wiring part, which caused a failure or a risk of fire) By coating the unit with epoxy itself, in the conventional unit problem has been improved (difference in manufacturing method).

In addition, in the conventional unit (see FIGS. 2 and 4 (a)), while manufacturing the unit using a general enameled copper wire coil, a certain temperature (the temperature at which the insulation of the general enameled copper wire withstands 130 degrees Celsius) is exceeded, enameled copper wire The insulation of the electromagnet is broken and the electromagnet is short-circuited, and the electric power is concentrated toward the short-circuited electromagnet due to the change in the resistance value. At the same time, safety problems due to sparks occurred.

According to the unit stack structure of the present invention, the insulation temperature (200 to 220 degrees Celsius) is increased by changing the polyester copper wire (conventional unit) to the polyester imide copper wire. Accordingly, it is possible to have a stable input power and output power structure.

The stacked structure of the unit of FIG. 4( c ) is a stacked structure of units of another embodiment including devices other than the SN electromagnet in the stacked structure of the unit of FIG. 4( b ). The stacked structure of these units also has the effect of improving the stacked structure of the units of FIG. 4( a ).

change in power type

Although the stacked structure of the conventional unit of FIG. 4( a ) has a problem of heat generation, only AC can be output. In other words, the output of AC could be obtained through alternating magnetic flux of DC and AC, and when DC power was used, it was necessary to use a diode or an inverter to convert AC to DC once.

In comparison, in the improved stacked structures of the units of FIGS. 4(b) and 4(c), alternating current is obtained through the power of NS and SN, and when the position of the SN electromagnet is reversed to NS and stacked, the output of DC (It can be manufactured as a DC generator for DC electronic products and can be miniaturized).

The stacked structure of the unit of FIG. 4(d) is the same as that of the unit of FIG. ), and the description thereof will be continued below.

Change in output power (see Fig. 5)

In the conventional unit wiring method of FIG. 4( a ), the connection of the electromagnets was performed in a parallel structure. In order to reduce the sense of distance between the lining of the electromagnet connected to the (+) terminal, there was a high risk of a short circuit in the part where the lining of the NS electromagnet and the SN electromagnet overlapped while assembling the unit in the same direction. The quality is good, and the output is higher (separation distance). However, there was a problem in compressing the unit as the thickness of the coil of the angseon acts as a height (a difference in compressive strength occurs) (see FIG. 5). The diameter of the coil about 1mm will affect the height of the unit.

In contrast, in the stacked structure of the unit according to the embodiment of the present invention (see FIG. 4(d)), the part to be compressed is divided into both sides as the electromagnet is connected in a series and parallel structure, and when the unit is compressed, one side It is not deflected to the side, and it is divided into two sides to keep the compressive strength constant, and the quality of electricity is improved. In addition, when the unit is compressed, the lining, which used to act as a height, is divided into various directions, and when the unit is compressed, it can be compressed with more strength, resulting in a higher output (separation distance). In this structure, the wiring operation is also easier and more convenient than in the conventional unit structure.

As for the wiring method, the connection of the electromagnets was carried out in a parallel structure. In order to reduce the sense of distance between the lining of the electromagnet connected to the (+) terminal, there was a high risk of a short circuit in the part where the lining of the NS electromagnet and the SN electromagnet overlapped while assembling the unit in the same direction. The quality is good, and the output is higher (separation distance). However, there was a problem in compressing the unit as the thickness of the coil of the angseon acts as a height (a difference in compressive strength occurs) (see FIG. 5). The diameter of the coil about 1mm will affect the height of the unit.

In contrast, in the stacked structure of the unit according to the embodiment of the present invention (see FIG. 4(d)), the part to be compressed is divided into both sides as the electromagnet is connected in a series and parallel structure, and when the unit is compressed, one side It is not deflected to the side, and it is divided into two sides to keep the compressive strength constant, and the quality of electricity is improved. In addition, when the unit is compressed, the lining, which used to act as a height, is divided into various directions, and when the unit is compressed, it can be compressed with more strength, resulting in a higher output (separation distance). In this structure, the wiring operation is also easier and more convenient than in the conventional unit structure.

Change of input power (refer to FIG. 5)

The parallel structure of the conventional unit of FIG. 4(a) is a unidirectional connection, and the biggest problem was a short circuit problem due to the compression of the unit. There were limits.

On the other hand, in the stacked structure of the unit of the embodiment of the present invention of FIG. 4(b), the serial-parallel connection is a multi-directional connection, which solves the short circuit problem due to the crimping of the unit, which is the biggest problem. In addition, the entire electromagnet is By dividing and connecting in series and parallel, it became possible to freely adjust the input power and IGBT capacity. Since the resistance can be increased through the IGBT with respect to the input voltage of 100V, for example, it is possible to increase the conventional input voltage of 50V to 100V. In addition, it became possible to reduce the number of IGBTs.

Referring to FIG. 6, although it has been partially described above, the present invention provides an AC generator (or generator) structure capable of outputting AC by alternating magnetic flux, (also called smart electronic generator) (based on the inventor's last name) Also referred to as CHOI'S LAW applied). That is, the Choi's Law is a new law applied to an AC generator, and is a law indicating that the output can be doubled by stacking armatures using the structural technology of the unit.

The AC generator according to FIG. 6 also applies the electromagnetic induction action of the rotary synchronous generator, and the principle of generating a magnetic field by inputting power to the field winding and the magnetic flux is linked to the armature is the same, but the problems of the conventional rotary synchronous generator are solved. To compensate, it is a structure that can obtain an electromotive force equal to or greater than the physical rotation by rotating the electromagnetic field only by switching the power supply.

6 (b) is a diagram illustrating a conventional rotary synchronous generator. A synchronous generator is a synchronous alternator that converts mechanical power that rotates into electricity into an electrical output, and is a generator that operates at a predetermined rotational speed (rpm) to generate AC power of a predetermined frequency. Synchronous generators so far have applied electromagnetic induction, and when direct current is applied to the field winding of the rotor, the magnetic field is stimulated, and as the field rotates, magnetic flux is linked in the stator winding to generate an alternating electromotive force. However, in the course of this rotation, there is a problem of output decrease due to various problems such as rotational resistance, rotational friction, heat generation, friction coefficient problem of bearing, deceleration phenomenon, precision problem, etc. And there are various difficulties that make it very difficult to utilize the space.

On the other hand, Fig. 6 (a) is a diagram illustrating a part of the non-rotating AC generator unit. The non-rotating AC generator has the same application of electromagnetic induction, but it is a generator made to supplement and solve the problem of the existing rotation. It is a non-rotating (stationary) generator that is stationary and does not rotate physically, but only turns on/off the power to the field windings stacked inside the unit at a certain duty. It is a generator that can obtain electromotive force by rotation of magnetic flux.

The power supply uses direct current (DC) power, cuts off power according to a predetermined duty, and provides different directions to the field while generating an alternating electromotive force similar to the rotation of a conventional rotary synchronous generator. it is a generator

Unlike conventional synchronous generators, since they are stationary, problems such as rotational resistance, rotational friction, heat generation, bearing friction coefficient, and deceleration can be reduced. No exposure to risk. The space utilization is superior to that of the existing synchronous generator, and the separation distance at which magnetic force is linked to the armature is constant compared to when the synchronous generator rotates, and since the field winding and the armature are in close contact, more magnetic fields can be linked, and the Due to its structure, it is possible to obtain safer and better quality electricity than a rotary synchronous generator by using the field winding and the upper and lower magnetic poles of the field magnet at the same time. Above all, it is unique in that it enables simple and safe development.

7 is a diagram illustrating a laminated portion of a field winding and an armature inside the unit. One unit can be assembled by alternately stacking field windings and armatures on a hollow type core (the diameter of the inner cylinder is variable - the hollow diameter acts as a ventilation hole and has a cooling function). However, the shape of the core is not limited to the hollow type, and the interior may be in the form of a polygon (not shown, triangle, square, or other shape). The number of fields and armatures should be designed to suit the capacity, and since the core and the field, the core and the armature, and the field and the armature inside the unit are in contact, special attention should be paid to the insulation part, and the insulation of the core part or the pole piece part must be quite certain. When the field is divided into a first field and a second field, when direct current is supplied to the first field, a magnetic pole is generated in the first field and the second field does not work. Then, when DC electricity is supplied to the second field, the magnetic field is stimulated in the second field and the first field does not work. As the alternating magnetic flux is continuously generated in this way, the alternating magnetic flux is linked to the armature to generate an alternating electromotive force. Looking at the electromagnetic induction action of the synchronous generator, when the rotating field rotates, it is the same principle as the N pole and the S pole continuously alternately stimulate the stator winding (refer to (a) and (b) of FIG. 7). The most important thing here is that the first and second fields inside the unit do not link the magnetic poles to one armature 1:1, but the magnetic poles of the first and second fields link 1:1+α. It gives more stimulation to the armature than the conventional synchronous generator. To put it simply by comparing the conventional studies, it can be seen that it is equivalent to using a demagnetizing magnetic force while at the same time using a demagnetizing magnetic force in reverse. The length of the unit can be manufactured according to the desired capacity. It should be stacked in the number suitable for the output capacity, and the output voltage varies according to the wiring method. When the output voltage and capacity are determined, the corresponding input must also be designed according to the appropriate capacity.

8 is a view showing a change in the number of units. Referring to FIG. 8, the number of fields and armatures inside the unit is arbitrarily determined, and the number of fields and armatures is small (a) by increasing the number (b ) unit can be manufactured, so the number of fields and armatures is not limited.

As described above, according to the non-rotating AC power generator according to the present invention, the efficiency of the AC generator is improved and the risk of failure is reduced by providing the AC power generator utilizing the structural advantage of not rotating.

In addition, it is possible to provide a high-efficiency AC power generator that is stable and easy to control the output, rather than a synchronous generator using the conventional rotational kinetic energy to generate AC power using DC power.

As described above, the best embodiment has been disclosed in the drawings and the specification. Although specific terms are used herein, they are used only for the purpose of describing the present invention and are not used to limit the meaning or the scope of the present invention described in the claims. Therefore, it will be understood by those skilled in the art that various modifications and equivalent other embodiments are possible therefrom. Accordingly, the true technical protection scope of the present invention should be defined by the technical spirit of the appended claims.

133: pole piece
134,135: armature (field)
136: electromagnet

Claims (5)

In the non-rotating AC power generator capable of doubling the output voltage,
DC power supply unit 110; a control unit 120 that provides a switching signal to cut off direct current electricity at a predetermined period and for a predetermined period of time; and an AC output unit 130 for converting the DC power into AC power and outputting the DC power by the switching signal of the control unit 120 , wherein the AC output unit 130 includes an iron core 131 and the iron core 131 . ) between the magnetic pole pieces 133 arranged in the longitudinal direction, the field windings 134 and 135 wound around the iron core 131 between the magnetic pole pieces 133 and supplied with the DC power, and the magnetic pole pieces 133 . As one unit in which a structure including an armature winding 136 wound around the iron core 131 and outputting the AC power by induced electromotive force by the field windings 134 and 135 is stacked, the AC output unit 130 ) and the DC power supply unit 110, so that the DC power from the DC power supply unit 110 is constantly supplied to the AC output unit 130 so that the AC output unit 130 continuously outputs AC. As provided with a power supply 140 (POWER SUPPLY) that serves to supply power,
The electromotive force can be obtained from the rotation of magnetic flux due to the movement of electrons simply by turning the power on/off with a certain duty to the field windings stacked inside the unit, which is the AC output unit, and the power supply is DC ( An output characterized in that by using DC) power, the power is cut and supplied according to a predetermined duty, and an alternating electromotive force is generated in the same form as the rotation of a conventional rotary synchronous generator while providing different directions to the field. A non-rotating AC power generator capable of doubling the voltage. The compact structure of claim 1, wherein the AC output unit has a structure in which the number of armatures is greater than the number of electromagnets, and the total height of the finally stacked units is in close contact with each other due to an increase in compression force. A non-rotating AC power generator that can double the output voltage, characterized in that The non-rotating AC power generator capable of doubling the output voltage according to claim 1, wherein the unit is made up of one or more units, and each unit can be switched. The non-rotating AC power generator capable of doubling the output voltage according to claim 1, characterized in that the heights of the armatures constituting the unit are all the same. The method according to claim 1, wherein the first field and the second field inside the unit do not link the magnetic poles 1:1 to one armature, but the magnetic poles of the first field and the second field link 1:1+α. Therefore, a non-rotating AC power generator capable of doubling the output voltage, characterized in that it gives more stimulation to the armature than the conventional synchronous generator.

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