KR102234410B1 - Electromagnetic compatibility Performance test system for Alternator and voltage regulator - Google Patents

Abstract

The present invention relates to a system for evaluating electromagnetic compatibility of an alternator and a voltage regulator, comprising a body having an accommodation space formed therein, and a belt disposed inside the body to generate an alternating voltage in the alternator. A sample driving device including a motor coupled to the alternator to generate a rotational driving force, and a jig disposed on the upper side of the body to space the motor and the sample in a vertical direction to fix the motor; An electromagnetic wave antenna disposed inside the electromagnetic wave shielding chamber to be opposite to the sample of the sample driving device to measure electromagnetic waves generated from the sample; And an analysis unit that repeatedly measures and analyzes electromagnetic waves generated from the sample through the electromagnetic wave antenna when the sample is operated by driving the motor, wherein the motor includes a plurality of couplings coupled along the axis of the motor. , Prevents electromagnetic waves generated when the motor rotates from leaking out.

Description

Electromagnetic compatibility Performance test system for Alternator and voltage regulator}

The present invention relates to a performance test system of an alternator and a voltage regulator, and more particularly, it is possible to more accurately test the EMC performance of a sample composed of an alternator and a voltage regulator by preventing an error in test results due to electromagnetic waves generated from a motor. The present invention relates to a system for evaluating electromagnetic compatibility of alternators and voltage regulators.

The alternator and voltage regulator are devices that charge the battery installed in the vehicle through the power of the vehicle engine, and are combined with the vehicle engine to generate and output an AC voltage corresponding to the rotational driving power of the vehicle engine, and the alternating voltage generated by the alternator. It is configured to include a voltage regulator provided to the battery after stabilizing.

When the design and manufacture of these alternators and voltage regulators are completed, they undergo a performance test process for electromagnetic compatibility before mounting the vehicle, and the existing performance test support device was to provide instead of the rotational driving power of the vehicle engine through an electric motor. .

However, since electric motors are electronic devices unlike vehicle engines, they inevitably generate electromagnetic waves due to driving. This may cause an additional problem in that the electric motor acts as noise when performing an Electromagnetic Compatibility (EMC) test among various performance test items of the alternator and voltage regulator.

In the invention of the same applicant as in this application (application number 10-2016-0180060, electromagnetic compatibility performance evaluation system for alternators and voltage regulators), a hydraulic system was applied to minimize the effect of electromagnetic waves caused by the use of electric motors. .

However, in the case of applying the hydraulic system in this way, it is difficult to adjust the speed of the motor according to the user setting, and thus it is difficult to properly test the alternator.

(Korean Patent Application No. 10-2016-0180060, December 27, 2016)

It is an object of the present invention to provide a system for evaluating the electromagnetic compatibility of an alternator and a voltage regulator that can more accurately test the EMC performance of a sample composed of an alternator and a voltage regulator by preventing errors in test results due to electromagnetic waves generated from a motor. will be.

The object of the present invention is not limited to the above-mentioned object, and other objects not mentioned will be clearly understood by those of ordinary skill in the art from the following description.

In order to achieve the above object, an electromagnetic wave shielding chamber that blocks electromagnetic waves leaking to the outside according to an embodiment of the present invention, and an AC voltage are generated inside the electromagnetic wave shielding chamber, and are combined with the output alternator and the alternator to stabilize the AC voltage. The alternator for evaluating the electromagnetic wave (EMC) of the sample consisting of a voltage regulator and the electromagnetic compatibility performance evaluation system of the voltage regulator have a body with a receiving space inside, and a belt that is arranged inside the body to generate an alternating voltage in the alternator. A sample driving device including a motor coupled to the alternator to generate a rotational driving force, and a jig disposed on the upper side of the body to space the motor and the sample in a vertical direction to fix the motor; An electromagnetic wave antenna disposed inside the electromagnetic wave shielding chamber to be opposite to the sample of the sample driving device to measure electromagnetic waves generated from the sample; And an analysis unit that repeatedly measures and analyzes electromagnetic waves generated from the sample through the electromagnetic wave antenna when the sample is operated by driving the motor, wherein the motor includes a plurality of couplings coupled along the axis of the motor. , Prevents electromagnetic waves generated when the motor rotates from leaking out.

Here, in the plurality of couplings, the first coupling, the second coupling, and the third coupling are coupled along one direction, and the second coupling is formed of a plastic material, so that the first coupling and the third coupling are electrically connected. Can be shielded.

Here, the jig is a first plate fixed to the upper side of the body; A second plate having a fixing hole formed on the upper side in one direction in the direction of the rotation axis of the motor and fixed to the upper side of the first plate; And a fixing part for fixing the sample in the fixing hole by selectively changing the position of the fixing hole according to the size of the sample.

Here, the body is detachably coupled to the lower side, and a height adjustment unit for vertically adjusting the height of the body according to the size of the sample; may be further provided.

Here, the motor may be formed as a servo motor.

Here, the sample driving device may further include a control unit for varying an operating load acting on the sample by varying at least one of a torque or a speed of the thermomotor.

Here, a first communication unit having a converter disposed outside the electromagnetic shielding chamber; A second communication unit that communicates with the first communication unit and inversely converts a driving command of the alternator received through the first communication unit; And a DC filter disposed outside the electromagnetic wave shielding chamber to be connected to the sample, and filtering power so as to check whether the generated power is power generated according to a preset driving.

Here, the sample may have a load connected from the outside of the chamber so as to check whether the electric power generated in the driving state of the sample is appropriate.

The electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator according to the present invention is capable of providing a more diverse sample power generation environment by blocking electromagnetic waves generated when using a servo motor through a plurality of couplings, as well as providing accurate experimental results. There are features that can be provided.

In addition, since the jig and height adjustment unit can be adjusted, it can be applied in various ways to the size of the sample.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those of ordinary skill in the art to which the present invention belongs from the following description.

1 is a conceptual diagram of an electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator according to an embodiment of the present invention.
2 is a perspective view of a specimen driving device according to an embodiment of the present invention.
FIG. 3 is a view of FIG. 2 as viewed from a direction'C'.
4 is a photograph of a coupling according to an embodiment of the present invention.
5 is a perspective view of an operating state of the height adjustment unit according to an embodiment of the present invention.
6 is a perspective view showing a state in which the height adjustment unit of the sample driving device according to an embodiment of the present invention is operated.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In this case, it should be noted that the same components in the accompanying drawings are indicated by the same reference numerals as possible. In addition, detailed descriptions of known functions and configurations that may obscure the subject matter of the present invention will be omitted. For the same reason, some elements in the accompanying drawings are exaggerated, omitted, or schematically illustrated.

In addition, throughout the specification, when a certain part "includes" a certain component, it means that other components may be further included rather than excluding other components unless otherwise stated. In addition, throughout the specification, the term "~on" means that it is located above or below the target part, and does not necessarily mean that it is located above the gravitational direction.

1 is a conceptual diagram of an electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator according to an embodiment of the present invention.

Referring to FIG. 1, the electromagnetic compatibility performance evaluation system of the alternator and voltage regulator according to the embodiment of the present invention generates and outputs an AC voltage inside the electromagnetic wave shielding chamber C that blocks electromagnetic waves leaking to the outside. It evaluates the electromagnetic wave (EMC) of the sample (S) composed of the alternator (A) and the voltage regulator (R) that is coupled to the alternator (A) to stabilize and output the AC voltage, and the sample driving device (100), the electromagnetic wave antenna It is configured to include 200 and the analysis unit 300.

The sample driving device 100 is provided inside the electromagnetic wave shielding chamber C, and includes a body 110, a motor 120, and a jig 130. The body 110 has an accommodation space formed therein. The motor 120 is disposed inside the body 110 so that the belt (B) is applied to generate an alternating voltage in the alternator (A). It is combined with the alternator (A) to generate a rotational driving force. The jig 130 is disposed on the upper side of the body 110 to fix the motor 120 and the sample S in a vertical direction.

The electromagnetic wave antenna 200 is disposed inside the electromagnetic wave shielding chamber C to face the sample S of the sample driving device 100 to measure electromagnetic waves generated from the sample S.

The analysis unit 300 repeatedly measures and analyzes electromagnetic waves generated from the sample S through the electromagnetic wave antenna 200 when the sample S is operated by driving the motor 120.

Hereinafter, each configuration will be described in more detail.

2 is a perspective view of a sample driving device according to an embodiment of the present invention, FIG. 3 is a view viewed from a direction'C' of FIG. 2, and FIG. 4 is a photograph of a coupling according to an embodiment of the present invention, and FIG. 5 Is a perspective view showing an operating state of the height adjustment unit according to an embodiment of the present invention, and FIG. 6 is a perspective view showing a state in which the height adjustment unit of the sample driving device according to the embodiment of the present invention is operated.

With reference to Figs. 2 to 6, the specimen driving device will be described in more detail.

The body 110 is formed in a substantially rectangular parallelepiped shape to form an accommodation space to accommodate the motor 120 therein, and an opening and closing door is provided on one side thereof. The body 110 may be provided with a control unit capable of controlling the torque and operating speed of the motor 120 therein. The control unit may provide various conditions according to the performance or power generation environment of the motor by including a touch-type display panel and varying the operating load acting on the sample S by inputting at least one of the aforementioned torque or speed.

The rotational shaft of the motor 120 disposed inside the body 110 protrudes to the outside of the body 110. At this time, the plurality of couplings 112 are sequentially coupled along the protruding rotation axis.

When describing the coupling 112 in more detail, the plurality of couplings 112 include a first coupling 1121 and a second coupling 1122 along the axis of the motor 120 protruding outward of the body 110. ) And the third coupling 1123 are continuously coupled to prevent electromagnetic waves generated by the rotation of the motor 120 from leaking out.

At this time, the first coupling 1121 and the second coupling 1122 have a protrusion 1121a and a fitting groove 1122a formed on the abutting surface and are fitted together, so that they rotate together without turning away from each other. And, it may be additionally sealed through a gasket along the abutting surface to be fitted.

In addition, the second coupling 1122 may be formed of a plastic material to electrically shield the first coupling 1121 and the third coupling 1123. Accordingly, the plurality of couplings may further increase the reliability of the electromagnetic wave shielding test by preventing electromagnetic waves generated by the rotation of the motor 120 from leaking to the outside.

In addition, a protective cap 114 for protecting the plurality of couplings 112 coupled along the axial direction of the motor 120 may be further provided. The protective cap 114 is formed in a hollow shape with one end closed to accommodate the plurality of couplings 112 while the other end is fixed to the outer surface of the body 110 to protect the plurality of couplings 112. At this time, the protective cap 114 is formed with a cutout hole 1141 along the longitudinal direction so as to check the connection state of the plurality of couplings 112 along the outer circumferential surface. Therefore, it is possible to more easily check the state of the coupling 112 even when the protective cap 114 is not removed.

The motor 120 is coupled with the alternator (A) through the belt (B) so that the alternating current voltage is generated in the alternator (A) to generate a rotational driving force. Since the motor 120 is accommodated in the jig 120, a filter 113 may be provided on the outer surface of the jig 110 to remove electromagnetic waves generated by rotation of the motor 120.

At this time, the motor 120 is characterized in that it is applied as a servo motor. The servomotor may generate electromagnetic waves, but the generated electromagnetic waves are blocked through a plurality of couplings and filters. When applied as a servo motor, it is possible to change the operating load acting on the sample by varying at least one of the torque or speed of the servo motor, thereby providing various power generation environments of the sample. You can actively respond accordingly.

Conventionally, it is difficult to adjust the power generation size in various ways by changing the torque and rotation speed of the motor by applying a hydraulic motor. The present invention completely blocks the generation of electromagnetic waves, and at the same time, it is possible to change the power generation capacity of the alternator (A), so that experiments can be performed on various samples without replacing the motor.

The jig 130 is fixed to the upper side of the body 110 to fix the sample, and the first plate 131, the second plate 132, the fixing part 133, and the variable fixing part 134 Consists of including.

The first plate 131 is formed in a plate shape and fixed to the upper side of the body 110.

The second plate 132 is formed in a plate shape and fixed to the upper side of the first plate 131, and a plurality of guide grooves 1321 are formed on the plate-shaped plate surface along one direction. The guide groove 1321 is formed in at least one along the width direction B of the second plate 132 so that the position in the width direction is adjusted according to the size of the motor 120 to be coupled to the fixing part 133. In addition, the position of the fixing part 133 can be adjusted even along the length direction L of the second plate 132.

The fixing part 133 fixes the sample S by adjusting its length while moving along the guide groove 1321 according to the size of the sample S. At this time, the fixing part 133 is formed to protrude upward so that the bottom surface of the sample S is spaced apart from the upper surface of the second plate 132, and the protruding end is bolted to the sample S to secure the sample (S). Can be fixed.

In this way, since the sample (S) is fixed to the upper surface of the jig (130), the sample (S) is connected to the motor 120 through the belt (B) disposed on the side of the body (110), the motor 120 Since it is possible to implement the engine of the vehicle according to the driving, it is possible to experiment with the sample S in a state close to the actual situation.

The variable fixing unit 134 serves to additionally fix the alternator while moving in the vertical direction according to the size of the alternator.

The height adjustment unit 140 is coupled to the bottom surface of the body 110 and is capable of actively responding to the experiment by variably changing the vertical height of the body 110 according to the size of the motor 110. 141, 142), a variable adjustment unit 143, a height adjustment drive unit 144 and the wheel 145 is configured to include.

The upper and lower grid frames 141 and 142 are disposed to face each other in the upper and lower sides. In the upper and lower grid frames 141 and 142, the distances adjacent to each other are changed according to the height adjustment of the variable control unit 143 disposed therebetween. At this time, rails 1411 are provided at the front and rear sides of the upper and lower grid frames 141 and 142 to guide the movement of the variable control unit 143. The rail 1411 guides the movement of the side shaft member 1434 of the variable control unit 143 to be described later.

The variable adjustment unit 143 is provided in a pair, is positioned on the left and right sides of the upper and lower grid frames 141 and 142 and coupled, and the coupling structure thereof will be described in detail.

First, the first bracing 1431 and the second bracing 1432 are combined in a'X' shape. And, the center of the'X' shape facing each other in the front and rear is coupled through the central axis (1433). The central shaft member 1433 has a through hole formed with a screw thread in the center, and is coupled with a height adjustment driving unit 144 to be described later to be driven according to the rotation of the height adjustment driving unit 144.

Ends of the'X' shape facing each other are coupled through the side shaft members (1431, 1434). At this time, of the side shaft members, the side shaft member 1434 positioned on the inner side moves along the rails 1411 positioned on the upper and lower sides, and the side shaft member 1431 positioned on the outer side rotates. It is coupled to the left and right sides of the frames 141 and 142.

Accordingly, the side shaft member 1434 positioned inside according to the rotation of the height adjustment driver 144 moves along the rail 1411, and the side shaft member 1431 positioned at the outside rotates while rotating. You will adjust the height of (143).

The height adjustment driving unit 144 connects the central shaft members 1433 disposed adjacent to each other through the shaft member 1441, and is coupled to the central shaft member 1433 to form a screw thread along the moving region. It is driven while passing through (1433). In this way, the height adjustment driving unit 144 moves the central shaft member 1433 connected to the shaft member 1441 while rotating the shaft member 1441 according to the rotation direction of the handle 1442 (clockwise, counterclockwise). Accordingly, the variable control unit 143 is driven. In addition, as shown in FIG. 4(b), the shaft member 1441 is formed with a diameter thicker than that of the screw region, thereby limiting the region moving to a preset position when rotationally driven through the handle 1442 do. Also, the diameter of the end on which the screw is formed is formed to be thicker than that of the threaded area.

The wheel 145 may be disposed under the lower grid frame 142 to facilitate movement.

Hereinafter, the operating characteristics will be described in more detail with reference to FIG. 1.

First, an electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator according to an embodiment of the present invention may include a first communication unit 150, a second communication unit 160, and a DC filter 170.

The first communication unit 150 includes a converter disposed outside the electromagnetic wave shielding chamber.

The second communication unit 160 communicates with the first communication unit 150 and inversely converts the driving command of the alternator received through the first communication unit 150.

In this case, the first communication unit 150 and the second communication unit 160 may be connected by LIN or CAN as an optical communication connection, but the communication method is not limited thereto.

The DC filter 170 is disposed outside the electromagnetic wave shielding chamber, is connected to the sample S, and filters the power so as to check whether the generated power is power generated according to a preset driving. In this case, the sample may have a load connected from the outside of the chamber so as to check whether the power generated in the driving state of the sample is appropriate.

In addition, the sample driving device 100 is provided with a filter 113 that blocks electromagnetic waves generated by driving the internal motor 120 in addition to the outer surface of the body 110, so that the motor is doubled together with the aforementioned coupling. By shielding the electromagnetic waves generated by the rotation of 120, the electromagnetic waves generated inside the chamber (C) can be obtained only the electromagnetic waves to the sample (S) through the antenna.

On the other hand, the embodiments of the present invention disclosed in the present specification and the drawings are only provided specific examples to facilitate the description of the present invention and to aid understanding of the present invention, and are not intended to limit the scope of the present invention. In addition to the embodiments disclosed herein, it is apparent to those of ordinary skill in the art that other modifications based on the technical idea of the present invention may be implemented.

100: sample driving device 110: body
1121: first coupling 1122: second coupling
1123: third coupling 113: filter
120: motor 130: jig
131: first plate 132: second plate
1321: guide groove 133: fixing part
140: height adjustment unit 141: upper grid frame
1411: rail 142: lower grid frame
143: variable control unit 1431: first bracing
1432: second bracing 1431, 1434: side shaft member
144: height adjustment drive 145: wheel
150: first communication unit 160: second communication unit
170: DC filter 200: antenna
300: analysis unit

Claims (8)

Electromagnetic wave (EMC) of the sample consisting of an electromagnetic wave shielding chamber that blocks electromagnetic waves leaking out, and a voltage regulator that generates an AC voltage inside the electromagnetic wave shielding chamber, and is coupled to an output alternator and the alternator to stabilize the alternating current voltage. In the electromagnetic compatibility performance evaluation system of the alternator and voltage regulator to be evaluated,
A body with an accommodation space formed therein, and a belt disposed inside the body to generate an alternating voltage to the alternator. A sample driving device including a motor coupled with the alternator to generate a rotational driving force through the alternator, and a jig disposed above the body to vertically space the motor and the sample to be fixed;
An electromagnetic wave antenna disposed inside the electromagnetic wave shielding chamber opposite to the sample of the sample driving device to measure electromagnetic waves generated from the sample; And
When the sample is operated through the driving of the motor, an analysis unit that repeatedly measures and analyzes electromagnetic waves generated from the sample through the electromagnetic wave antenna; and
The motor,
A first coupling, a second coupling, and a third coupling are continuously arranged in one direction along the axis of the motor,
The first coupling and the second coupling rotate together without turning each other by being fitted with a protrusion and a fitting groove 1122a formed on a surface that abuts each other,
The second coupling,
It is formed of a plastic material and is disposed between the first coupling and the third coupling to electrically shield the first coupling and the third coupling to prevent electromagnetic waves from leaking to the outside,
The body,
A height adjustment unit that is detachably coupled to the lower side and vertically adjusts the height of the body according to the size of the sample; further comprising,
The height adjustment unit,
Upper and lower grid frames arranged to face each other in the upper and lower sides;
It is combined in a'X' shape through a first bracing and a second bracing provided in a pair, and is coupled to the center of the'X' shape through a central axis member and located on the left and right sides of the upper and lower grid frames. A variable control unit that is coupled to each other;
An electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator, comprising: a height adjustment driving unit connected to the variable control unit and configured to adjust the height of the upper and lower grid frames by driving the “X”-shaped variable control unit. delete The method of claim 1,
The jig,
A first plate fixed to the upper side of the body;
A second plate having a plurality of fixing holes in the direction of the rotation axis of the motor, and having a fixing hole having a lower side fixed to the upper side of the first plate; And
And a fixing part for fixing the specimen in the fixing hole by selectively changing the position of the fixing hole according to the size of the specimen. delete The method of claim 1,
The motor,
Electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator, characterized in that formed by a servo motor. The method of claim 5,
The sample driving device,
An electromagnetic compatibility performance evaluation system of an alternator and a voltage regulator, further comprising a control unit for varying at least one of a torque or a speed of the thermomotor to vary an operating load acting on the specimen. The method of claim 1,
A first communication unit having a converter disposed outside the electromagnetic shielding chamber;
A second communication unit that communicates with the first communication unit and inversely converts a driving command of the alternator received through the first communication unit; And
An alternator and a voltage regulator, comprising: a DC filter disposed outside the electromagnetic shielding chamber, connected to the sample, and filtering the power so as to determine whether the generated power is generated according to a preset driving. Electromagnetic compatibility performance evaluation system. The method of claim 1,
The sample,
Electromagnetic compatibility performance evaluation system of an alternator and voltage regulator, characterized in that it is connected to a load connected from the outside of the chamber so as to check whether the electric power produced in the driving state of the sample is appropriate.

Images