EMC test system for rotating load and a test method thereof

Abstract

An EMC test system for a rotating load includes a shielded chamber, a rotating load, a first connecting shaft, a compressor, a fluid pipeline, a fluid motor, a second connecting shaft and a motor load. The rotating load, the first connecting shaft and the compressor are arranged inside the shielded chamber. The fluid motor, the second connecting shaft and the motor load are arranged outside the shielded chamber. The rotating load is connected to the compressor through the first connecting shaft. The compressor is connected to the fluid motor through the fluid pipeline. The fluid motor is connected to the motor load through the second connecting shaft. The fluid pipeline passes through the shielded chamber. The compressor is employed such that energy is transferred to the outdoors through the transmission of fluid, and then converted into electric energy.

Claims

1. An EMC test system for a rotating load, comprising a shielded chamber, the rotating load, a first connecting shaft, a compressor, a fluid pipeline, a fluid motor, a second connecting shaft, and a motor load; wherein the rotating load, the first connecting shaft and the compressor are arranged inside the shielded chamber; the fluid motor, the second connecting shaft and the motor load are arranged outside the shielded chamber; the rotating load is connected to the compressor through the first connecting shaft; the compressor is connected to the fluid motor through the fluid pipeline; the fluid motor is connected to the motor load through the second connecting shaft; fluid is introduced to the fluid motor and drives the fluid motor to rotate such that the fluid motor drives the motor load to rotate through the second connecting shaft; and the fluid pipeline passes through the shielded chamber.

2. The EMC test system according to claim 1, wherein, the fluid pipeline is made of a non-magnetic conductive material.

3. The EMC test system according to claim 2, wherein, the fluid pipeline is one selected from the group consisting of a plastic pipe, a rubber pipe and a nylon pipe.

4. The EMC test system according to claim 3, wherein, the fluid pipeline is arranged in a recirculation configuration; the fluid pipeline comprises an output pipeline and an input pipeline; the output pipeline and the input pipeline separately pass through the shielded chamber; and the output pipeline and the input pipeline are connected separately between the compressor and the fluid motor.

5. The EMC test system according to claim 1, wherein, the EMC test system is further provided with a consumption load outside the shielded chamber, and the consumption load is connected to the motor load.

6. The EMC test system according to claim 1, wherein, the fluid pipeline is configured to transport a gas, and the fluid motor is a pneumatic motor.

7. The EMC test system according to claim 1, wherein, the fluid pipeline is configured to transport a liquid, and the fluid motor is a hydraulic motor.

8. A test method of the EMC test system according to claim 1, comprising: rotating the rotating load to drive the compressor to rotate through the first connecting shaft; and generating a positive pressure for a fluid through the compressor, wherein the fluid flows from an inside of the shielded chamber to an outside of the shielded chamber through the fluid pipeline, and the fluid is introduced to the fluid motor to drive the fluid motor to rotate; and the fluid motor drives the motor load to rotate through the second connecting shaft.

9. The EMC test system according to claim 2, wherein, the fluid pipeline is configured to transport a gas, and the fluid motor is a pneumatic motor.

10. The EMC test system according to claim 3, wherein, the fluid pipeline is configured to transport a gas, and the fluid motor is a pneumatic motor.

11. The EMC test system according to claim 4, wherein, the fluid pipeline is configured to transport a gas, and the fluid motor is a pneumatic motor.

12. The EMC test system according to claim 5, wherein, the fluid pipeline is configured to transport a gas, and the fluid motor is a pneumatic motor.

13. The EMC test system according to claim 2, wherein, the fluid pipeline is configured to transport a liquid, and the fluid motor is a hydraulic motor.

14. The EMC test system according to claim 3, wherein, the fluid pipeline is configured to transport a liquid, and the fluid motor is a hydraulic motor.

15. The EMC test system according to claim 4, wherein, the fluid pipeline is configured to transport a liquid, and the fluid motor is a hydraulic motor.

16. The EMC test system according to claim 5, wherein, the fluid pipeline is configured to transport a liquid, and the fluid motor is a hydraulic motor.

17. The test method according to claim 8, wherein, the fluid pipeline is made of a non-magnetic conductive material.

18. The test method according to claim 17, wherein, the fluid pipeline is one selected from the group consisting of a plastic pipe, a rubber pipe and a nylon pipe.

19. The test method according to claim 18, wherein, the fluid pipeline is arranged in a recirculation configuration; the fluid pipeline comprises an output pipeline and an input pipeline; the output pipeline and the input pipeline separately pass through the shielded chamber; and the output pipeline and the input pipeline are connected separately between the compressor and the fluid motor.

20. The test method according to claim 8, wherein, the EMC test system is further provided with a consumption load outside the shielded chamber, and the consumption load is connected to the motor load.

Description

BRIEF DESCRIPTION OF THE DRAWING

(1) FIGURE is a schematic diagram showing the EMC test system of the present invention.

(2) The present invention will be further described below with reference to the drawings and embodiments.

DETAILED DESCRIPTION OF THE EMBODIMENTS

(3) FIGURE schematically shows the EMC test system of the present invention suitable for the rotating load 11. The rotating load 11 is a motor, a generator or other rotating loads that can be applied to the present invention. The EMC test system includes the shielded chamber 10, the rotating load 11, the first connecting shaft 12, the compressor 13, the fluid pipeline, the fluid motor 15, the second connecting shaft 16, the motor load 17, and the consumption load 18. The shielded chamber 10 can also be an EMC anechoic chamber. The rotating load 11, the first connecting shaft 12 and the compressor 13 are arranged inside the shielded chamber 10. The rotating load 11 is connected to the compressor 13 through the first connecting shaft 12. The first connecting shaft 12 is a conventional transmission mechanism without the need for special material transmission. The compressor 13 is driven to work through the rotation of the rotating load 11 and the transmission of the connecting shaft.

(4) The fluid motor 15, the second connecting shaft 16 and the motor load 17 are arranged outside the shielded chamber 10. The compressor 13 is connected to the fluid motor 15 through a fluid pipeline. The fluid pipeline is made of a non-magnetic conductive material.

(5) The fluid pipeline is a plastic pipe, a rubber pipe or a nylon pipe. The fluid pipeline is arranged in a recirculation configuration, and includes the output pipeline 141 and the input pipeline 142. The output pipeline 141 and the input pipeline 142 are respectively connected to the outside of the shielded chamber 10 through a shielded tunnel. The output pipeline 141 and the input pipeline 142 are connected between the compressor 13 and the fluid motor 15, respectively. When working, the compressor 13 provides a positive pressure for a fluid and outputs the fluid through the output pipeline 141. Then the fluid can drive the fluid motor 15 to work, and the fluid can be recovered from the input pipeline 142.

(6) The fluid pipeline is configured to transport gas, and the fluid motor 15 is a pneumatic motor to realize the technical solution of the present invention through the transmission of gas. Alternatively, the fluid pipeline can also be configured to transport liquid, and the fluid motor 15 is a hydraulic motor to realize the technical solution of the present invention through the transmission of liquid, which includes hydraulic transmission, oil pressure transmission, etc.

(7) The outdoor fluid motor 15 is connected to the motor load 17 through the second connecting shaft 16, and the consumption load 18 is connected to the motor load 17, thereby realizing energy consumption. In terms of energy consumption, the motor load 17 can be used alone, namely, the motor load 17 is a mechanical load such as a magnetic powder brake or a motor. The motor then drives a resistive load, or a green load with feedback, and the green load is connected to a power grid through an active inverter.

(8) A test method of the EMC test system under test includes:

(9) the rotating load 11 is rotated to drive the compressor 13 to rotate through the first connecting shaft 12;

(10) the compressor 13 generates a positive pressure for the fluid, the fluid flows from the inside of the shielded chamber 10 to the outside of the shielded chamber 10 through the transmission of the fluid pipeline, and the fluid is introduced to the fluid motor 15 and drives the fluid motor 15 to rotate;

(11) the fluid motor 15 drives the motor load 17 to rotate through the second connecting shaft 16;

(12) the motor load 17 drives the consumption load 18 to rotate to realize energy consumption; and

(13) the test equipment located in the shielded chamber 10 acquires and tests relevant EMC data.

INDUSTRIAL APPLICABILITY

(14) The EMC test system and test method of the present invention are suitable for the field of EMC testing. The compressor is employed, whereby the energy is transferred to the outdoors through the transmission of fluid, and then converted into electric energy, which avoids the problem of EMC interference caused by electromagnetic loads. In this way, the test system of the present invention not only has optimal test accuracy but also is less expensive than existing systems.