Energy monitoring system of electric dynamometer

Abstract

The invention discloses an energy monitoring system of an electric power dynamometer, and relates to the technical field of electric power dynamometers, the energy monitoring system comprises a bidirectional electric energy meter, an intelligent controller, an upper computer and a display screen, the bidirectional electric energy meter is added to monitor the operation state of the electric power dynamometer and meter positive electric energy and negative electric energy, so as to judge whether the electric power dynamometer is in a feed state or a power consumption state; the intelligent controller is adopted to read data of the bidirectional electric energy meter, so that the complex work is effectively simplified, and the safety is improved; the upper computer is used for analyzing and processing and establishing a statistical data table, the analysis is accurate, and the operation is simple; an analysis result is displayed in a large screen, energy monitoring is achieved, data extraction is simple and clear, the working efficiency is greatly improved, energy monitoring is achieved, and data support is provided for power capacity increasing and electric energy saving of a laboratory.

Description

Technical Field

[0001] The invention relates to the technical field of electric dynamometers, and in particular to an energy monitoring system for an electric dynamometer. Background Art

[0002] With the continuous development of motor application fields, the demand for motor function testing is increasing. The electric dynamometer can effectively complete the motor test, thereby obtaining the motor's rated power, current, voltage and other parameters. In order to ensure the reliability of the motor performance, various functional tests need to be performed on the motor. The electric dynamometer is currently an important equipment for testing and evaluating motor performance, and is widely used in motor manufacturing, research and development, and testing. In the electric dynamometer, the motor is the core component, and its stability, accuracy and reliability have an important impact on the operation of the entire system and the accuracy of the data.

[0003] The working principle of the electric dynamometer is to add appropriate voltage and current to the power input terminal to start the motor or generator under test. The electric dynamometer consumes electric energy when it starts running, and sends the electric energy back to the power grid when it is in the power generation state. However, the electric dynamometer itself does not have an electric energy monitoring device and cannot realize the self-power monitoring function.

[0004] The document (CN 118232624 A) discloses a high-speed electric dynamometer motor, including a front bracket, characterized in that: a motor front seat is fixedly installed on the inner side of the front bracket, one end of the motor front seat is fixedly connected to the motor housing by bolts, one end of the motor housing is fixedly connected to the motor rear seat by bolts, a rear cover is plugged on the outer side of the motor rear seat, a heat dissipation fin is provided on the outer side of the motor housing, an oil box is fixedly installed on the outer side of the motor housing, a circulation box is fixedly installed on the outer side of the motor housing, a heat dissipation component is arranged on the inner side of the motor housing, a lubrication component is arranged on the inner end of the motor front seat, a motor shaft is arranged on the inner side of the motor housing, the two ends of the motor shaft respectively pass through the motor front seat and the motor rear seat, and a rear bracket is fixedly installed on the outer side of the motor rear seat. However, it lacks an electric energy monitoring device and cannot realize the self-electric energy monitoring function. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention conceives an energy monitoring system for an electric dynamometer, adds a bidirectional electric energy meter, adopts an intelligent controller and a host computer, realizes the power usage and consumption analysis of the electric dynamometer, and provides a basis for laboratory power consumption analysis.

[0006] The technical solution for implementing the present invention is: an energy monitoring system for an electric dynamometer, characterized in that it includes: a bidirectional electric energy meter, an intelligent controller, a host computer and a display screen, the bidirectional electric energy meter is electrically connected to the electric dynamometer, the bidirectional electric energy meter is communicatively connected to the intelligent controller, the intelligent controller is electrically connected to the host computer via a USB interface, and the host computer is electrically connected to the display screen.

[0007] Furthermore, a power filter is provided between the bidirectional electric energy meter and the main cabinet of the frequency conversion cabinet of the electric dynamometer, the power filter is electrically connected to the bidirectional electric energy meter, and the power filter is electrically connected to the main cabinet of the frequency conversion cabinet.

[0008] Furthermore, the bidirectional electric energy meter is connected to the intelligent controller via 485 communication.

[0009] Furthermore, the intelligent controller is connected to the host computer via RS232 communication.

[0010] Furthermore, the display screen is a touch screen.

[0011] Furthermore, the host computer communicates with the display screen via Labview software.

[0012] Furthermore, the bidirectional electric energy meter model is DTS541 / DSS531.

[0013] Furthermore, the host computer is an intelligent IPC industrial computer i3 / i5 / i7CPU.

[0014] Furthermore, the intelligent controller is an XT450M intelligent controller.

[0015] The beneficial technical effects of the energy monitoring system of an electric dynamometer of the present invention are embodied in:

[0016] An energy monitoring system for an electric dynamometer monitors the operating status of the electric dynamometer by adding a bidirectional electric energy meter, measures positive electric energy and negative electric energy, and thus determines whether it is a feeding state or a power consumption state; an intelligent controller is used to read the data of the bidirectional electric energy meter, effectively simplifying complex work and improving safety; a host computer is used to perform analysis and processing and establish statistical data tables, with accurate analysis and simple operation; the analysis results are displayed on a large screen to realize energy monitoring, and data extraction is simple and clear, which greatly improves work efficiency, realizes energy monitoring, and provides data support for laboratory power capacity expansion and energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of an energy monitoring system of an electric dynamometer;

[0018] Figure 2The utility model is a schematic diagram of connecting an energy monitoring system of an electric dynamometer with the electric dynamometer. DETAILED DESCRIPTION

[0019] The following is combined with Figures 1-2 The specific implementation manner will further describe the present invention in detail. To make the purpose, technical scheme and advantages of the implementation manner clearer, the technical scheme in the implementation manner will be clearly and completely described in combination with the embodiments of the present invention. The specific implementation manner described here is only used to explain the present invention and is not used to limit the scope of the present invention.

[0020] As attached Figure 1 As shown, an energy monitoring system for an electric dynamometer comprises: a bidirectional electric energy meter, an intelligent controller, a host computer and a display screen. A power filter is arranged between the bidirectional electric energy meter and the main cabinet of the frequency conversion cabinet of the electric dynamometer. The power filter is electrically connected to the bidirectional electric energy meter. The model of the bidirectional electric energy meter is DTS541 / DSS531. The power filter is electrically connected to the main cabinet of the frequency conversion cabinet. The bidirectional electric energy meter is connected to the intelligent controller via 485 communication. The intelligent controller is connected to the host computer via RS232 communication. The intelligent controller is an XT450M intelligent controller. The host computer communicates with the display screen via Labview software. The host computer is an intelligent IPC industrial computer i3 / i5 / i7CPU. The display screen is a touch screen.

[0021] As attached Figure 2 As shown, a bidirectional energy meter and a power filter are added to the rear end of the main circuit breaker of the main power cabinet of the dynamometer frequency converter cabinet to monitor the operating status of the electric dynamometer and measure the positive and negative energy, so as to determine whether it is a feeding state or a power consumption state; then an intelligent controller and a communication module are added, and a DB9 plug is used to allow the bidirectional energy meter to communicate with the intelligent controller through 485, and to perform port configuration and program editing; the intelligent controller is used to read the data of the bidirectional energy meter, and the data is transmitted to the host computer through RS232 communication, and then Labview software is used to set the interface, associate parameters, edit scripts, etc., to realize data analysis and processing and establish statistical data tables, bar charts, or fan charts, etc., and the analysis results are displayed on a large screen to realize energy monitoring, and provide data support for laboratory power capacity expansion and energy saving.

[0022] The working principle of the electric dynamometer is based on the principle of electromechanical energy conversion and Ohm's law in electricity. The electric dynamometer consumes electric energy when implementing torque control, and sends electric energy back to the power grid when the electric dynamometer is in the power generation state. This application uses a bidirectional electric energy meter to monitor the power consumption and power supply of the electric dynamometer, which effectively simplifies complex work and improves safety. The data is transmitted to the host computer for reading and analysis through the intelligent controller, and the power consumption and power supply status of the electric dynamometer are recorded when it is working. The data extraction is simple and clear, the analysis is accurate, the operation is simple, and the work efficiency is greatly improved. It provides data support for laboratory power capacity expansion and energy saving, realizes the power usage and power consumption analysis of the electric dynamometer, and provides a basis for laboratory power consumption analysis.

[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An energy monitoring system for an electric dynamometer, characterized in that it include: A bidirectional electric energy meter, an intelligent controller, a host computer and a display screen, wherein the bidirectional electric energy meter is electrically connected to an electric dynamometer, the bidirectional electric energy meter is communicatively connected to the intelligent controller, the intelligent controller is electrically connected to the host computer via a USB interface, and the host computer is electrically connected to the display screen.

2. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: A power filter is arranged between the bidirectional electric energy meter and the frequency conversion cabinet main cabinet of the electric dynamometer, the power filter is electrically connected to the bidirectional electric energy meter, and the power filter is electrically connected to the frequency conversion cabinet main cabinet.

3. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The bidirectional electric energy meter is connected to the intelligent controller via 485 communication.

4. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The intelligent controller is connected to the host computer via RS232 communication.

5. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The display screen is a touch screen.

6. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The host computer communicates with the display screen via Labview software.

7. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The bidirectional electric energy meter model is DTS541 / DSS531.

8. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The host computer is an intelligent IPC industrial computer i3 / i5 / i7CPU.

9. The energy monitoring system of an electric dynamometer according to claim 1, characterized in that: The intelligent controller is an XT450M intelligent controller.

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