CN213279522U - Dual-motor driving system for variable speed load - Google Patents
Dual-motor driving system for variable speed load Download PDFInfo
- Publication number
- CN213279522U CN213279522U CN202021902122.7U CN202021902122U CN213279522U CN 213279522 U CN213279522 U CN 213279522U CN 202021902122 U CN202021902122 U CN 202021902122U CN 213279522 U CN213279522 U CN 213279522U
- Authority
- CN
- China
- Prior art keywords
- motor
- load
- control system
- main motor
- auxiliary
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model relates to the technical field of motors, in particular to a double-motor driving system for variable speed load, which comprises a load, a main motor, an auxiliary motor and a clutch; the system also comprises a main motor control system and an auxiliary motor control system; the load is an F-shaped double-extension shaft load, and the extension ends at two sides are respectively in transmission connection with the main motor and the auxiliary motor through clutches; the main motor control system is in control connection with the main motor; the auxiliary motor control system is in control connection with the auxiliary motor; the utility model discloses with traditional drive form, energy-conserving effect is obvious, and the suitability is stronger, efficiency is higher. The utility model discloses effectively utilized automatic clutch's advantage, fan bilateral installation clutch can be in the different modes of dragging, free convenient safe carry out the mutual switching of drive arrangement to avoid the equipment idle running to consume the condition of energy.
Description
Technical Field
The utility model relates to the technical field of electric machines, especially, relate to a two motor drive systems for variable speed load.
Background
In the prior art, the rotating speed is adjusted according to the production working condition, the motor is a three-phase asynchronous variable frequency motor, and the rotating speed is adjusted by adjusting the given frequency of the motor. The scheme has the defects that when the load is high-power equipment, the electric energy is seriously wasted when the load runs at a low rotating speed for a long time and under variable working conditions, the driving equipment in the existing scheme is single, certain fault possibility also exists, and the safety coefficient is lower.
To solve the above problems, a dual motor drive system for a variable speed load is proposed in the present application.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
For solving the technical problem who exists among the background art, the utility model provides a two motor drive system for variable speed load has with traditional drive form, and energy-conserving effect is obvious, and the suitability is stronger, efficient characteristics.
(II) technical scheme
In order to solve the technical problem, the utility model provides a dual-motor driving system for variable speed load, which comprises a load, a main motor, an auxiliary motor and a clutch; the system also comprises a main motor control system and an auxiliary motor control system;
the load is an F-shaped double-extension shaft load, and the extension ends at two sides are respectively in transmission connection with the main motor and the auxiliary motor through clutches;
the main motor control system is in control connection with the main motor; and the auxiliary motor control system is in control connection with the auxiliary motor.
Preferably, the main motor is a three-phase synchronous permanent magnet motor; the main motor control system is a synchronous permanent magnet motor variable frequency control system.
Preferably, the auxiliary motor is a low-rotation-speed power frequency motor or a low-rotation-speed variable frequency motor.
Preferably, the clutch is an overrunning clutch or an electromagnetic clutch.
Preferably, the load is a variable speed fan or water pump.
The above technical scheme of the utility model has following profitable technological effect:
1. the utility model has the advantages that the rated power of the main motor is designed to be the rated power of the load, when the low load runs, the auxiliary motor runs independently, and the air door at the inlet of the fan is used for adjusting the system air volume to ensure the stability and controllability of the working condition; when the motor runs under normal working conditions, the main motor is put into operation, and the rotating speed of the motor is adjusted according to the working conditions. Compared with the traditional driving mode, the energy-saving effect is obvious, the applicability is stronger, and the efficiency is higher.
2. The utility model discloses effectively utilized automatic clutch's advantage, fan bilateral installation clutch can be in the different modes of dragging, free convenient safe carry out the mutual switching of drive arrangement to avoid the equipment idle running to consume the condition of energy.
3. The utility model discloses effectively utilized permanent-magnet machine's advantage, still can guarantee high efficiency output under the condition that the load changes, overcome among the current scheme asynchronous machine when variable speed operation power factor is low, the shortcoming that the power consumption is high to there is easy operation, the advantage that the maintenance volume is few. The power factor of the permanent magnet motor can still reach over 0.9 when the load is 50% running, and the power factor of the three-phase asynchronous motor is only 0.75. According to the current technological level, a 355kw permanent magnet synchronous motor can be manufactured, and the driving requirement of a fan can be met.
Drawings
FIG. 1 is a schematic view of a connection structure of a load and a motor in the prior art;
fig. 2 is a schematic view of the connection structure of the medium load of the present invention.
Reference numerals: 1. a load; 2. a motor; 3. an asynchronous motor frequency conversion system; 4. a clutch; 5. an auxiliary motor control system; 6. a main motor control system; 7. an auxiliary motor; 8. a main motor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
As shown in fig. 2, the present invention provides a dual motor driving system for variable speed load, which comprises a load 1, a main motor 8, an auxiliary motor 7 and a clutch 4; the system also comprises a main motor control system 6 and an auxiliary motor control system 5;
the load 1 is an F-shaped double-extension shaft load 1, and the extension ends at two sides are respectively in transmission connection with a main motor 8 and an auxiliary motor 7 through a clutch 4;
the main motor control system 6 is in control connection with the main motor 8; the auxiliary motor control system 5 is in control connection with an auxiliary motor 7.
In an alternative embodiment, the main motor 8 is a 1500rpm four-pole three-phase synchronous permanent magnet variable frequency motor; the system is also provided with a three-phase synchronous permanent magnet variable frequency motor control system; the auxiliary motor 7 is a 740rpm eight-pole three-phase low-rotation-speed power frequency motor; the clutch 4 is an overrunning clutch; the load 1 is a fan, the structure is F-shaped, and two sides of the load are provided with double extending shafts.
The extending ends of the two sides of the fan in the hazardous waste incineration system are in transmission connection with a quadrupole three-phase synchronous permanent magnet variable frequency motor and an octupole three-phase low-rotation-speed power frequency motor through clutches 4 respectively; during the start-up and shut-down of the incineration system and the production process of the furnace, the load of the load 1 is about 30% -50% of the rated working condition air volume, at the moment, the production can be satisfied only by starting the auxiliary motor 7, and the furnace drying process lasts for dozens of days. When the production system enters a normal production working condition, the load 1 is about 60% -80% of the rated working condition air volume, and only under special conditions and emergency yield improvement, the load 1 can reach 90% -100% of the rated working condition air volume. Through the use of the clutches 4 on the two sides of the fan, the switching of the driving devices can be conveniently and quickly realized, and the power consumption can be saved. Through the use of the permanent magnet motor, the power factor of the motor 2 can still be kept above 0.9 under normal working conditions, and the energy-saving effect is obvious compared with that of an asynchronous variable frequency motor. The double-motor driving system considers the conditions that the load 1 is not allowed to stop in the operation of some working conditions, and the like, and the system is provided with the overrunning clutch, so that the auxiliary motor 7 can be started in advance to serve as a fan operation standby device, and the operation of the main motor with the fan is not influenced.
The three-phase permanent magnet synchronous motor conforms to the GB/T22711 and 2019 standards.
In the utility model, the rated power of the main motor 8 is designed to be the rated power of the load, when the low load runs, the auxiliary motor 7 runs alone, and the air door at the inlet of the fan is used for adjusting the system air volume to ensure the stability and controllability of the working condition; when the motor operates under normal working conditions, the main motor 8 is put into operation, and the rotating speed of the motor is adjusted according to the working conditions. Compared with the traditional driving mode, the energy-saving effect is obvious, the applicability is stronger, and the efficiency is higher.
The utility model discloses effectively utilized automatic clutch's advantage, fan bilateral installation clutch 4 can be in the different modes of dragging, free convenient safe switching each other that carries out the drive apparatus to avoid the equipment idle running to consume the condition of energy.
The utility model discloses effectively utilized permanent-magnet machine's advantage, still can guarantee high efficiency output under the condition that the load changes, overcome among the current scheme asynchronous machine when variable speed operation power factor is low, the shortcoming that the power consumption is high to there is easy operation, the advantage that the maintenance volume is few. The power factor of the permanent magnet motor can still reach over 0.9 when the load is 50% running, and the power factor of the three-phase asynchronous motor is only 0.75. According to the current technological level, a 355kw permanent magnet synchronous motor can be manufactured, and the driving requirement of a fan can be met.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (5)
1. A dual motor drive system for variable speed loads, comprising a load (1), a main motor (8), an auxiliary motor (7) and a clutch (4); the system also comprises a main motor control system (6) and an auxiliary motor control system (5);
the load (1) is an F-shaped double-extension-shaft load (1), and the extension ends on the two sides are in transmission connection with a main motor (8) and an auxiliary motor (7) through clutches (4) respectively;
the main motor control system (6) is in control connection with the main motor (8); the auxiliary motor control system (5) is in control connection with the auxiliary motor (7).
2. A dual motor drive system for variable speed loads according to claim 1, wherein the main motor (8) is a three phase synchronous permanent magnet motor; the main motor control system (6) is a synchronous permanent magnet motor variable frequency control system.
3. Two-motor drive system for variable speed loads according to claim 1, characterized in that the auxiliary motor (7) is a low-speed mains motor or a low-speed variable frequency motor.
4. Two-motor drive system for variable speed loads according to claim 1, characterized in that the clutch (4) is an overrunning clutch or an electromagnetic clutch.
5. Two-motor drive system for a variable speed load according to claim 1, characterized in that the load (1) is a variable speed fan or a water pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021902122.7U CN213279522U (en) | 2020-09-03 | 2020-09-03 | Dual-motor driving system for variable speed load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021902122.7U CN213279522U (en) | 2020-09-03 | 2020-09-03 | Dual-motor driving system for variable speed load |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213279522U true CN213279522U (en) | 2021-05-25 |
Family
ID=75938915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021902122.7U Active CN213279522U (en) | 2020-09-03 | 2020-09-03 | Dual-motor driving system for variable speed load |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213279522U (en) |
-
2020
- 2020-09-03 CN CN202021902122.7U patent/CN213279522U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101662195B (en) | Permanent magnet synchronous motor for hoisting mechanism of direct-drive crane | |
| CN107947186A (en) | D.C. high voltage transmission inverter side accesses the startup control method of synchronous capacitor | |
| CN101488691B (en) | Air gap variant eddy speed regulating induction motor and working mode | |
| CN106059237B (en) | One kind can the self-running vernier magneto of pole-changing | |
| CN107872119B (en) | Motor generator set capable of increasing load rotational inertia and control operation method thereof | |
| CN213279522U (en) | Dual-motor driving system for variable speed load | |
| CN108282120A (en) | Double-stator permanent magnet synchronous generator control system and method for wind-power electricity generation | |
| CN101320925B (en) | Low-voltage high power multi-branch permanent magnet synchronous motor | |
| CN201577011U (en) | Permanent synmotor used for hoisting mechanism of inner rotor direct-drive type crane | |
| CN108233652B (en) | Double-stator asynchronous starting permanent magnet synchronous motor | |
| CN202550961U (en) | Frequency conversion energy-saving device of low-voltage three-phase asynchronous motor control system | |
| CN212435618U (en) | Energy-saving synergistic environment-friendly oil pumping unit control device | |
| CN201118394Y (en) | Multi-power three-phase energy-saving electromotor | |
| CN204847730U (en) | Colliery is synchronous device that directly drives of permanent magnetism for lifting machine | |
| CN201708637U (en) | Driving device of oil pumping unit | |
| CN211655960U (en) | High-low double-rated torque motor special for oil pumping unit | |
| CN201312282Y (en) | Speed changing system of static frequency converter | |
| CN113659790A (en) | Design method of efficient direct-current driving permanent magnet rotor motor | |
| CN204156533U (en) | A kind of double-fed type pumped storage with self-starting function | |
| CN213213262U (en) | Driving system for variable speed load | |
| CN205754107U (en) | A kind of motor dynamics star-delta conversion energy-conserving device | |
| CN111030549A (en) | Permanent magnet motor dragging reactive feedback integrated device | |
| CN210531164U (en) | Novel closed water pump based on energy conservation and consumption reduction of coastal power station | |
| CN204152742U (en) | A kind of energy-saving type boiler feed water pump drive system for thermal power plant | |
| CN211127640U (en) | Permanent magnet motor dragging reactive feedback integrated device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |