Motor driving system with vector frequency conversion controller

Abstract

The utility model discloses a motor driving system with a vector frequency conversion controller, relates to the technical field of motor driving, and aims to solve the problems that the control precision of various parameters (pressure, position, speed and the like) of a front servo press in the prior art is not high, and the high-precision requirement of an automobile manufacturer on a mechanical press cannot be met. Comprising a control cabinet in which a frequency converter is arranged; the remote control device is in remote control connection with the frequency converter so as to realize remote monitoring and parameter adjustment; the brake resistor is connected to the driving motor and used for controlling the brake unit to accurately brake the driving motor through the frequency converter when needed; the driving motor is provided with a fan and a monitoring module, and the monitoring module is used for monitoring and feeding back operation parameters of the motor in real time; and the brake unit is arranged in the control cabinet, is connected with the frequency converter and the brake resistor, and is used for receiving an instruction from the frequency converter to control the working state of the brake resistor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor drive, in particular to a motor drive system with a vector frequency conversion controller. Background Art

[0002] A servo press usually refers to a press that uses a servo motor for drive control. It includes servo presses for metal forging and special servo presses for industries such as refractory materials. Due to the CNC characteristics of servo motors, they are sometimes widely referred to as CNC presses. A servo press drives an eccentric gear through a servo motor to realize the movement of the slider. Through complex electrification control, the servo press can arbitrarily program the stroke, speed, pressure, etc. of the slider, and even reach the nominal tonnage of the press at low speed. Servo presses are mainly used in the automotive industry and the motor industry, such as: automobile engines, gearbox shafts, bearings, and gear interference fits. The bearings of automobile motors, the press-fitting of shafts, etc. all require servo presses.

[0003] At present, the control accuracy of various parameters (pressure, position, speed, etc.) of servo presses is not high, which cannot meet the high-precision requirements of automobile manufacturers for mechanical presses; therefore, the market urgently needs to develop a motor drive system with a vector frequency conversion controller to help people solve existing problems. Utility Model Content

[0004] The purpose of the utility model is to provide a motor drive system with a vector frequency conversion controller to solve the problem that the control accuracy of various parameters (pressure, position, speed, etc.) of the front servo press proposed in the above background technology is not high and cannot meet the high-precision requirements of automobile manufacturers for mechanical presses.

[0005] To achieve the above purpose, the utility model provides the following technical solution: a motor drive system with a vector frequency conversion controller, comprising:

[0006] A control cabinet, in which a frequency converter is arranged;

[0007] A remote control device connected to the frequency converter for remote control;

[0008] Braking resistor, connected to the drive motor;

[0009] A driving motor, on which a fan and a monitoring module are arranged;

[0010] The braking unit is arranged inside the control cabinet and is connected to the frequency converter and the braking resistor.

[0011] Preferably, a frequency converter connected to an external power supply is arranged inside the control cabinet, and a voltage conversion module is arranged between the frequency converter and the external power supply. The voltage conversion module converts the external power supply voltage into an AC 380V voltage to power the frequency converter.

[0012] Preferably, the frequency converter is provided with: a start-stop module for remotely controlling the start and stop of the drive motor; and a switching module for remotely controlling the switching of the working mode of the drive motor.

[0013] Preferably, the frequency converter is further provided with: a setting module for remotely controlling the precise setting of the working mode parameters of the drive motor; and an indicating module for real-time display of the working status of the drive motor and feeding back to an external monitoring center.

[0014] Preferably, the drive motor is provided with a speed detector, which monitors the speed of the drive motor in real time and feeds back the speed to the frequency converter, and the frequency converter accurately controls the working state of the brake unit according to the speed information.

[0015] Preferably, the drive motor is also provided with a heat dissipation fan and a temperature detector, the temperature detector detects the working temperature of the drive motor in real time and feeds back to the frequency converter, and the frequency converter controls the fan output power according to the temperature information.

[0016] Preferably, the frequency converter is provided with a monitoring module, which monitors key parameters such as the rotation speed and temperature of the drive motor in real time, and transmits the monitoring data to an external monitoring center for centralized management and analysis.

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] In this utility model, by adopting vector frequency conversion control technology, the technology can achieve precise control of motor torque, speed and position, thereby improving the overall control accuracy of the servo press. Compared with traditional technology, it can achieve more accurate parameter setting and adjustment, ensuring that key parameters such as pressure, position and speed meet high-precision production requirements.

[0019] In this utility model, the vector frequency conversion controller can adjust the motor's output torque, speed and other key parameters in real time according to the motor's real-time operating status and user needs, so that the motor can operate in the optimal state, thereby reducing energy consumption and improving energy efficiency. Compared with traditional technologies, this technology can significantly reduce energy consumption while ensuring production efficiency.

[0020] In this utility model, the technology is equipped with a complete monitoring module and fault diagnosis system, which can monitor the operating status and key parameters of the motor in real time, and conduct real-time monitoring and adjustment through a remote control device. Once the motor fails or is abnormal, the system can quickly diagnose and provide a solution, reducing the time for troubleshooting and repair, and improving production efficiency and equipment reliability. At the same time, through centralized management and analysis of monitoring data, users can also promptly discover potential problems and perform preventive maintenance, further improving the stability and reliability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a system diagram of a motor drive system with a vector frequency conversion controller of the utility model;

[0022] Figure 2 This is a schematic diagram of control between the remote control and the frequency converter of the utility model;

[0023] Figure 3 This is a schematic diagram of control between the frequency converter and the drive motor of the utility model. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0025] See also Figure 1-3 The utility model provides an embodiment: a motor drive system with a vector frequency conversion controller, comprising:

[0026] A control cabinet, in which a frequency converter is arranged;

[0027] Remote control device, which is connected to the inverter for remote control to achieve remote monitoring and parameter adjustment;

[0028] A brake resistor is connected to the drive motor and is used to precisely brake the drive motor by controlling the brake unit through the frequency converter when necessary;

[0029] A drive motor is provided with a fan and a monitoring module, wherein the monitoring module is used for real-time monitoring and feedback of the motor's operating parameters;

[0030] The braking unit is arranged inside the control cabinet, connected to the frequency converter and the braking resistor, and is used to receive instructions from the frequency converter to control the working state of the braking resistor.

[0031] Furthermore, a frequency converter connected to an external power supply is arranged inside the control cabinet, and a voltage conversion module is arranged between the frequency converter and the external power supply. The voltage conversion module converts the external power supply voltage into an AC 380V voltage to power the frequency converter, so as to ensure that the frequency converter works stably and efficiently.

[0032] Furthermore, the frequency converter is provided with: a start-stop module for remotely controlling the start and stop of the drive motor to achieve rapid response and efficient control; and a switching module for remotely controlling the working mode switching of the drive motor to meet the needs under different working conditions.

[0033] Furthermore, the frequency converter is also provided with: a given module for remotely controlling the precise setting of the working mode parameters of the drive motor to improve the control accuracy of the servo press; an indication module for real-time display of the working status of the drive motor and feedback to the external monitoring center, so as to facilitate real-time monitoring and adjustment by users.

[0034] Furthermore, a speed detector is provided on the drive motor, which monitors the speed of the drive motor in real time and feeds back the speed to the frequency converter. The frequency converter accurately controls the working state of the brake unit according to the speed information to achieve high-precision control of the servo press.

[0035] Furthermore, the drive motor is also provided with a cooling fan and a temperature detector. The temperature detector detects the operating temperature of the drive motor in real time and feeds back to the frequency converter. The frequency converter controls the fan output power according to the temperature information, thereby achieving effective heat dissipation and temperature control of the drive motor and ensuring stable operation of the motor.

[0036] Furthermore, the frequency converter is provided with a monitoring module, which monitors key parameters such as the rotational speed and temperature of the drive motor in real time, and transmits the monitoring data to an external monitoring center for centralized management and analysis, so as to improve the safety and reliability of the system.

[0037] Working principle: The core of this motor drive system with vector frequency conversion controller is to achieve high-precision control of the servo press through close cooperation between the remote control device and the frequency converter. First, the frequency converter receives a stable AC 380V voltage through the voltage conversion module to ensure stable power supply. The remote control device monitors and adjusts the start and stop, working mode and parameters of each working mode of the motor in real time through communication with the frequency converter. The start and stop module, switching module and given module inside the frequency converter can accurately respond to remote control instructions and adjust the operating status and working parameters of the drive motor to meet the needs of high-precision control. At the same time, the monitoring module on the motor monitors the key parameters such as the motor speed and temperature in real time. These data are fed back to the remote control device and the external monitoring center through the frequency converter. When braking is required, the frequency converter accurately controls the working state of the braking resistor according to the information of the speed detector, and accurately brakes the drive motor. The temperature detector monitors the working temperature of the motor in real time and controls the output power of the cooling fan through the frequency converter to achieve effective heat dissipation and temperature control of the motor. Finally, the monitoring module on the frequency converter monitors the key parameters of the motor in real time and sends the data to the external monitoring center for centralized management and analysis. This workflow not only improves the control accuracy of the servo press, but also enhances the safety and reliability of the system, meeting the high-precision requirements of automobile manufacturers for mechanical presses.

[0038] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A motor drive system with a vector frequency conversion controller, characterized in that: include: A control cabinet, in which a frequency converter is arranged; A remote control device connected to the frequency converter for remote control; Braking resistor, connected to the drive motor; A driving motor, on which a fan and a monitoring module are arranged; The braking unit is arranged inside the control cabinet and is connected to the frequency converter and the braking resistor.

2. The motor drive system with a vector frequency conversion controller according to claim 1, characterized in that: A frequency converter connected to an external power supply is arranged inside the control cabinet, and a voltage conversion module is arranged between the frequency converter and the external power supply. The voltage conversion module converts the external power supply voltage into an AC 380V voltage to power the frequency converter.

3. The motor drive system with a vector frequency conversion controller according to claim 1, characterized in that: The frequency converter is provided with: a start-stop module for remotely controlling the start and stop of the drive motor; and a switching module for remotely controlling the switching of the working modes of the drive motor.

4. The motor drive system with a vector frequency conversion controller according to claim 3 is characterized in that: The frequency converter is also provided with: a setting module for remotely controlling and accurately setting the parameters of each working mode of the drive motor; and an indicating module for displaying the working state of the drive motor in real time and feeding it back to an external monitoring center.

5. The motor drive system with a vector frequency conversion controller according to claim 1, characterized in that: The drive motor is provided with a rotation speed detector, which monitors the rotation speed of the drive motor in real time and feeds back the rotation speed to the frequency converter. The frequency converter accurately controls the working state of the brake unit according to the rotation speed information.

6. The motor drive system with a vector frequency conversion controller according to claim 1, characterized in that: The drive motor is also provided with a heat dissipation fan and a temperature detector. The temperature detector detects the working temperature of the drive motor in real time and feeds back to the frequency converter. The frequency converter controls the fan output power according to the temperature information.

7. The motor drive system with a vector frequency conversion controller according to claim 1, characterized in that: The frequency converter is provided with a monitoring module, which monitors the key parameters of the rotation speed and temperature of the drive motor in real time and transmits the monitoring data to an external monitoring center for centralized management and analysis.

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