A communication control system for a permanent magnet synchronous motor of a sugar cane sugar mill
By introducing a permanent magnet synchronous motor communication control system into the sugarcane sugar press, the problems of high energy consumption of traditional motors and lack of coordinated adjustment of control systems have been solved, achieving efficient and stable automatic control and improving sugarcane juice yield.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA LIGHT IND NANNING DESIGN ENG
- Filing Date
- 2025-07-23
- Publication Date
- 2026-07-07
AI Technical Summary
Traditional sugarcane sugar presses using asynchronous or DC motors suffer from high energy consumption, large torque fluctuations, and slow response speeds. Furthermore, existing control systems lack high-precision collaborative control capabilities, making it difficult to adapt to the dynamic adjustment requirements of the sugar-making process. This restricts the large-scale application of permanent magnet synchronous motors in the sugar industry.
The communication control system for the permanent magnet synchronous motor of the sugarcane sugar press includes a central control room, a DCS control cabinet, a PLC control cabinet, and a servo drive control cabinet. It implements multiple communication protocols through PROFIBUS and MODBUS communication modules, and combines radar level gauges and pressure sensors to achieve automatic control and multi-machine coordinated adjustment of the permanent magnet synchronous motor.
The system's anti-interference capability and control precision were improved, energy consumption was reduced, automated control of the sugarcane press was achieved, and the sugarcane juice yield and production efficiency were increased.
Smart Images
Figure CN224473227U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor communication control technology, specifically a communication control system for a permanent magnet synchronous motor of a sugarcane sugar press. Background Technology
[0002] Sugarcane sugar production is a crucial pillar industry of the agricultural economy. The sugar industry needs to achieve energy conservation, efficiency improvement, and intelligent transformation through technological innovation. Traditional sugar presses generally use asynchronous or DC motors for drive, resulting in high energy consumption, large torque fluctuations, and slow response speeds, leading to energy waste and increased production costs. Furthermore, existing control systems are mostly based on traditional PLCs or frequency converters, lacking high-precision collaborative control capabilities and struggling to adapt to the dynamic adjustment requirements of sugar production processes for parameters such as pressing pressure, speed, and torque. Traditional sugar presses have high energy consumption, high maintenance costs, and rely on manual experience for parameter adjustment. However, existing permanent magnet synchronous motor control systems have technical bottlenecks in anti-interference capabilities, real-time communication, and multi-machine collaborative control, hindering their large-scale application in the sugar industry. How to solve the control challenges of permanent magnet synchronous motors under complex operating conditions is the technical problem this application aims to address. Utility Model Content
[0003] Therefore, the purpose of this utility model is to provide a communication control system for a permanent magnet synchronous motor of a sugarcane sugar press, so as to solve the technical problems mentioned in the background.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a communication control system for permanent magnet synchronous motors in a sugarcane sugar press, comprising a press and multiple permanent magnet synchronous motors for driving the press rollers, and further comprising a central control room, a DCS control cabinet, a PLC control cabinet, and multiple servo drive control cabinets. The central control room is connected to the DCS control cabinet via a network cable, the DCS control cabinet and the PLC control cabinet are connected via signal lines, the PLC control cabinet is connected to the multiple servo drive control cabinets via signal lines, and the multiple servo drive control cabinets are connected to the permanent magnet synchronous motors via cables.
[0005] Furthermore, the DCS control cabinet includes a power module connected to the circuit breaker, a DCS-CPU connected to the power module, and a switch and a PROFIBUS communication module connected to the DCS-CPU respectively.
[0006] Preferably, the PLC control cabinet includes a power supply module connected to the circuit breaker, a PLC-CPU connected to the power supply module, a switch and a PROFIBUS communication module II connected to the PLC-CPU, a MODBUS communication module I connected to the PROFIBUS communication module II, and an IO module connected to the MODBUS communication module I.
[0007] Preferably, the plurality of servo drive control cabinets include servo drive control cabinet one, servo drive control cabinet two, servo drive control cabinet three, and servo drive control cabinet four, and the plurality of permanent magnet synchronous motors include permanent magnet synchronous motor one, permanent magnet synchronous motor two, permanent magnet synchronous motor three, and permanent magnet synchronous motor four. Each of the servo drive control cabinet one, servo drive control cabinet two, servo drive control cabinet three, and servo drive control cabinet four includes a servo drive connected to a circuit breaker, and the servo drive is equipped with a MODBUS communication module two.
[0008] Preferably, the central control room is connected to PROFIBUS communication module one via a network cable, PROFIBUS communication module one is connected to PROFIBUS communication module two via a signal line, MODBUS communication module one is connected to MODBUS communication module two via a signal line, and the servo drive is connected to the permanent magnet synchronous motor via a cable.
[0009] Preferably, the press further includes a feed hopper and a feeding mechanism connected to the feed hopper. A radar level gauge is installed on the top of the feed hopper, and a pressure sensor is installed in the hydraulic oil pipeline of the press. The radar level gauge and the pressure sensor are respectively connected to a PROFIBUS communication module via signal lines.
[0010] In summary, the present invention has the following main advantages:
[0011] 1. Replace traditional three-phase asynchronous motors or DC motors with permanent magnet synchronous motors to solve the harsh working conditions and high-load drive requirements in sugar pressing workshops;
[0012] 2. The communication control system supports multiple communication protocols, improving communication speed;
[0013] 3. By avoiding strong electric and magnetic fields and effectively grounding, the anti-interference capability of communication control is greatly improved, and the stability of the system is enhanced.
[0014] 4. Supports switching between multiple control modes for permanent magnet synchronous motors, including speed mode, torque mode, and current mode. When the motor encounters a large load, it can automatically pass the load, ensuring stable motor operation. 5. It provides the optimal control method for permanent magnet synchronous motors, improves control accuracy, and reduces energy consumption;
[0015] 6. Automatic control of the sugarcane press has been achieved, and automatic adjustment of the feeding mechanism has been realized, which has improved the sugarcane juice yield;
[0016] 7. The communication and control problem between multiple controllers has been solved. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the system structure of this utility model;
[0018] Figure 2 This is a circuit block diagram of the present invention. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.
[0020] The embodiments of this utility model will be described below based on its overall structure.
[0021] like Figure 1 , Figure 2 As shown, this utility model includes a press 1 and multiple permanent magnet synchronous motors for driving the press rollers. It also includes a central control room 8, a DCS control cabinet 2, a PLC control cabinet 3, and multiple servo drive control cabinets. The DCS control cabinet 2 includes a power module connected to a circuit breaker, a DCS-CPU connected to the power module, and a switch and a PROFIBUS communication module 1 connected to the DCS-CPU. The PLC control cabinet 3 includes a power module connected to a circuit breaker, a PLC-CPU connected to the power module, a switch and a PROFIBUS communication module 2 connected to the PLC-CPU, a MODBUS communication module 1 connected to the PROFIBUS communication module 2, and an IO module connected to the MODBUS communication module 1.
[0022] The system includes multiple servo drive control cabinets, namely servo drive control cabinet 1 (4), servo drive control cabinet 2 (5), servo drive control cabinet 3 (6), and servo drive control cabinet 4 (7). It also includes multiple permanent magnet synchronous motors, namely permanent magnet synchronous motor 1 (11), permanent magnet synchronous motor 2 (12), permanent magnet synchronous motor 3 (13), and permanent magnet synchronous motor 4 (14). Each of the servo drive control cabinets includes a servo drive connected to a circuit breaker, and each servo drive is equipped with a MODBUS communication module 2.
[0023] The press 1 also includes a feeding hopper and a feeding mechanism 17 connected to the feeding hopper. A radar level gauge 15 is installed on the top of the feeding hopper, and a pressure sensor 16 is installed in the hydraulic oil pipeline of the press 1.
[0024] The connection relationships of this utility model are as follows: the main control room 8 is connected to the PROFIBUS communication module 1 installed in the DCS control cabinet 2 via a Category 6A shielded network cable. The PROFIBUS communication module 1 in the DCS control cabinet is connected to the PROFIBUS communication module 2 installed in the PLC control cabinet via signal lines. The MODBUS communication module 1 installed in the PLC control cabinet is connected to the MODBUS communication modules 2 of the servo drives installed in servo drive control cabinets 1-4, 2-5, 3-6, and 4-7 via signal lines. The servo drive in servo drive control cabinet 1-4 is connected to the permanent magnet synchronous motor 11 via a cable. The servo drive in servo drive control cabinet 2-5 is connected to the permanent magnet synchronous motor 12 via a cable. The servo drive in servo drive control cabinet 3-6 is connected to the permanent magnet synchronous motor 13 via a cable. The servo drive in servo drive control cabinet 4-7 is connected to the permanent magnet synchronous motor 14 via a cable. The radar level gauge 15 and the pressure sensor 16 are connected to the PROFIBUS communication module 1 via signal lines. The signal line of this utility model is a shielded communication cable, and the shielding layer is effectively grounded and avoids strong electric and magnetic fields.
[0025] The system control flow of this utility model is as follows: The central control room 8 remotely sends control commands to the DCS control cabinet 2. The DCS control cabinet 2 transmits the signals to the PLC control cabinet 3, and the PLC control cabinet 3 transmits the signals to the servo driver control cabinet to control the operation of the permanent magnet synchronous motor and read relevant motor operation data such as current, speed, and torque, as well as data from relevant sensors such as radar level gauge 15 and hydraulic oil pressure sensor 16. The automatic control mode of the permanent magnet synchronous motor can be divided into speed mode, torque mode, and current mode. The speed and frequency of the motor, as well as the feeding speed of the feeding mechanism 17, can be automatically adjusted according to the motor data corresponding to different modes. After the sensor signals and motor operation data enter the DCS control cabinet 2, the DCS control cabinet 2 performs logical judgment to automatically control the feeding speed of the bagasse feeding mechanism 17 and automatically adjust the speed of the permanent magnet synchronous motor to smoothly and stably handle sudden load changes.
[0026] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.
Claims
1. A communication control system for permanent magnet synchronous motors in a sugarcane sugar press, comprising a press and multiple permanent magnet synchronous motors for driving the press rollers, characterized in that, It also includes a central control room, a DCS control cabinet, a PLC control cabinet, and multiple servo drive control cabinets. The central control room is connected to the DCS control cabinet via a network cable. The DCS control cabinet and the PLC control cabinet are connected via signal lines. The PLC control cabinet is connected to multiple servo drive control cabinets via signal lines. The multiple servo drive control cabinets are connected to permanent magnet synchronous motors via cables.
2. The communication control system for a permanent magnet synchronous motor in a sugarcane sugar press according to claim 1, characterized in that: The DCS control cabinet includes a power module connected to the circuit breaker, a DCS-CPU connected to the power module, and a switch and a PROFIBUS communication module connected to the DCS-CPU.
3. The communication control system for a permanent magnet synchronous motor in a sugarcane sugar press according to claim 2, characterized in that: The PLC control cabinet includes a power module connected to the circuit breaker, a PLC-CPU connected to the power module, a switch and a PROFIBUS communication module II connected to the PLC-CPU, a MODBUS communication module I connected to the PROFIBUS communication module II, and an IO module connected to the MODBUS communication module I.
4. The communication control system for a permanent magnet synchronous motor of a sugarcane sugar press according to claim 3, characterized in that: The plurality of servo drive control cabinets include servo drive control cabinet one, servo drive control cabinet two, servo drive control cabinet three, and servo drive control cabinet four. The plurality of permanent magnet synchronous motors include permanent magnet synchronous motor one, permanent magnet synchronous motor two, permanent magnet synchronous motor three, and permanent magnet synchronous motor four. Each of the servo drive control cabinet one, servo drive control cabinet two, servo drive control cabinet three, and servo drive control cabinet four includes a servo drive connected to a circuit breaker, and the servo drive is equipped with a MODBUS communication module two.
5. The communication control system for a permanent magnet synchronous motor of a sugarcane sugar press according to claim 4, characterized in that: The main control room is connected to PROFIBUS communication module one via a network cable. PROFIBUS communication module one is connected to PROFIBUS communication module two via a signal line. MODBUS communication module one is connected to MODBUS communication module two via a signal line. The servo drive is connected to the permanent magnet synchronous motor via a cable.
6. The communication control system for a permanent magnet synchronous motor of a sugarcane sugar press according to claim 5, characterized in that: The press also includes a feeding hopper and a feeding mechanism connected to the feeding hopper. A radar level gauge is installed on the top of the feeding hopper. A pressure sensor is installed in the hydraulic oil pipeline of the press. The radar level gauge and the pressure sensor are respectively connected to a PROFIBUS communication module through signal lines.