CN104029594A - High-power combined type stepless speed regulating energy conservation power system - Google Patents
High-power combined type stepless speed regulating energy conservation power system Download PDFInfo
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- CN104029594A CN104029594A CN201410293661.8A CN201410293661A CN104029594A CN 104029594 A CN104029594 A CN 104029594A CN 201410293661 A CN201410293661 A CN 201410293661A CN 104029594 A CN104029594 A CN 104029594A
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Abstract
The invention discloses a high-power combined type stepless speed regulating energy conservation power system which comprises a control system and a mechanical system. A high-power motor of the mechanical system is connected with a sun gear of a planet combination mechanism through a coupler, a variable-frequency and variable-speed motor is connected with a cylindrical gear through a coupler (or the variable-frequency and variable-speed motor is connected with the sun gear of the planet combination mechanism through the coupler, and the high-power motor is connected with the cylindrical gear through the coupler), the cylindrical gear is connected with an internal gear of a duplicate gear, the high-power motor runs at rated speed, the speed of the variable-frequency and variable-speed motor is continuously adjustable under control of a computer, and the speeds of the high-power motor and the variable-frequency and variable-speed motor are composed prior to being outputted. A high-power variable-frequency speed regulating power source can be provided, the problem that the high-power motor is difficult in stepless speed regulating control, low in efficiency at low speed and large in start and brake overload current can be solved; the system is high in overall efficiency, good in low-speed performance and good in energy conservation effect.
Description
Technical field
The present invention relates to a kind of power system, relate in particular to a kind of high-power infinite speed variation energy-saving dynamic system being composited by planetary mechanism by stepless frequency control motor and common electric machine.
Background technology
Industrial motor power system is the main power consumer of China, accounts for the more than 60% of whole power consumptions, and the power consumption of blower fan, water pump, compressor accounts for 70% of national electric system power consumption, accounts for 46.7% of national power consumption.At present in China's major part, high-power blower, pump class adopt mechanical throttle style to regulate, and mode falls behind, and efficiency is low, if adopt mode of speed control to carry out flow control, can saving energy 30%, and energy-conservation has a high potential.
Middle heavy-duty motor has the feature of high potential, large electric current, speed governing difficulty when varying load, and starting current is large, and at present, what variable-frequency control technique was extensively approved realizes motor stepless speed regulation the technology of development potentiality.But low in low speed segment electrical efficiency, along with the increase of power and voltage class, the price of frequency converter raises up rapidly, and on market, big-power transducer is expensive, and some must rely on import, maintenance difficult, maintenance cost is high; And the frequency control motor of super high power and frequency converter there is no product, restricting the application of variable-frequency control technique in this field.
Through the retrieval of prior art is found, in document " novel high-power soft start/stepless speed-regulating transmission system research; coal science and technology; the 30th the 6th phase of volume of June in 2002 " the institute driving system that uses worm and gear and planetary differential train to combine of suggesting plans, because the transmitting ratio of worm and gear is very large, it is high especially that the rotating speed of helper motor just requires with all, must use special frequency control motor, the scope of infinite speed variation is less, and in addition, the driving efficiency of worm and gear is also very low.
Chinese patent " a kind of planetary speed regulating device that adopts Viscous Driving " (Granted publication number: CN203363053U) adopts viscous liquid driving speed control mode, speed governing is steady, controllability is high, there is function of stepless speed regulation, can make to load under friction speed and move to meet various operating mode demands.When but the planetary speed regulating device of this Viscous Driving is normally worked, in order not make friction lining skid, must provide energy to friction lining all the time, to keep enough normal pressures, this will consume a large amount of energy, and heating is serious, and adjusting speed accuracy is not high.
As can be seen here, prior art needs further improvement and improves.
Summary of the invention
The object of the invention is to provide a kind of high-power or super high power infinite speed variation power system, infinite speed variation, the low speed segment efficiency that can solve motor is low, start and the large problem of braking overcurrent, native system entirety driving efficiency is higher, energy-conservation obvious, cost is lower, especially to super high power systematic economy remarkable benefit.
The object of the invention can realize by following technical proposals: a kind of high-power combined type infinite speed variation energy-saving dynamic system, comprise by computing machine, system starts module, Braking system module, stepless speed regulation module, frequency converter form control system and by planet combination mechanism, heavy-duty motor, cylindrical wheel, the mechanical system that frequency control motor forms, it is characterized in that: described heavy-duty motor is connected with the sun wheel of described planet combination mechanism by coupler, described frequency control motor is connected with described cylindrical wheel by coupler, the external gear of described cylindrical wheel and dual gear is connected, described frequency control motor is by the rotation speed change of the external gear of dual gear described in described cylindrical wheel control, described heavy-duty motor turns round with rated speed of rotation, the sun wheel of planet combination mechanism described in transmission, and by the synthetic rotating speed of described planet combination mechanism, exported by pinion carrier.
The object of the invention can also realize by another kind of technical scheme: a kind of high-power combined type infinite speed variation energy-saving dynamic system, comprise by computing machine, system starts module, Braking system module, stepless speed regulation module, frequency converter form control system and by planet combination mechanism, heavy-duty motor, cylindrical wheel, the mechanical system that frequency control motor forms, it is characterized in that: described frequency control motor is connected with the sun wheel of described planet combination mechanism by coupler, described heavy-duty motor is connected with described cylindrical wheel by coupler, the external gear of described cylindrical wheel and dual gear is connected, the rotation speed change of the sun wheel of planet combination mechanism described in described frequency control motor control, described heavy-duty motor turns round with rated speed of rotation, by the external gear of dual gear described in described spur gear drive, and by the synthetic rotating speed of described planet combination mechanism, exported by pinion carrier.
As preferably, in the time that transmission has shock load equipment, between described frequency control motor and described planet combination mechanism, power-transfer clutch is housed.
The present invention utilize 2K-H planet circular system and Cylinder Gear wheels and transmission device, compared with prior art, its beneficial effect is as follows:
(1) heavy-duty motor turns round all the time under rated speed of rotation, only has low power frequency conversion change-speed motor to carry out infinite speed variation, and frequency control motor power is less, and frequency converter price is lower, and system synthesis is originally lower.
(2) utilize cylindrical wheel to have grade transmission can select suitable frequency control motor rotating speed, make system practical, messenger chain is shorter, and driving efficiency is higher.
(3) can realize level and smooth stable infinite speed variation, soft start and the soft stop of system, speed adjustable range is large, and effectively the overcurrent in control system startup and docking process, reduces the impact to machinery and electrical network.
(4) heavy-duty motor moves all the time under high efficiency condition, and after speed governing is stable, heavy-duty motor cal val is little, and energy consumption is little, and system still has greater efficiency at low speed segment, is applicable to the larger operating mode of the infinite speed variation such as heavy-duty machinery and blower fan scope.
(5) array mode of native system can provide a kind of super high power frequency control power source.
Brief description of the drawings
Fig. 1 is system composition schematic diagram of the present invention.
Fig. 2 is mechanical system composition schematic diagram of the present invention.
Fig. 3 is mechanical system structure figure of the present invention.
Fig. 4 is another kind of scheme mechanical system composition schematic diagram of the present invention.
Fig. 5 is another kind of scheme mechanical system structure figure of the present invention.
Fig. 6 is planet combination mechanism of the present invention and cylindrical wheel connection diagram.
Fig. 7 is dual gear structure schematic diagram in Fig. 6.
In figure: 1-planet combination mechanism, 2-heavy-duty motor, 3-cylindrical wheel, 4-frequency control motor, 5-power-transfer clutch, 6-pinion carrier; A-sun wheel, b-satellite gear, c-dual gear, c1-inner gear, c2-external gear.
Detailed description of the invention
Below in conjunction with drawings and Examples, the invention will be further described.
Referring to Fig. 1, the present invention is made up of control system and mechanical system, control system comprises that computing machine, system start module, Braking system module, stepless speed regulation module and frequency converter, and mechanical system comprises heavy-duty motor, buncher and transmission device, and transmission device connects load.
Embodiment 1
Referring to Fig. 2, Fig. 3, Fig. 6 and Fig. 7, mechanical system of the present invention comprises planet combination mechanism 1, heavy-duty motor 2, cylindrical wheel 3 and frequency control motor 4, dual gear c left end is inner gear c1, engage with the satellite gear b of planet combination mechanism 1, right-hand member is external gear c2, engage with cylindrical wheel 3, heavy-duty motor 2 is connected with the sun wheel a of planet combination mechanism 1 by coupler, frequency control motor 4 is connected with cylindrical wheel 3 by coupler, the external gear c2 of the dual gear c of cylindrical wheel 3 and planet combination mechanism 1 is connected, between frequency control motor 4 and planet combination mechanism 1, power-transfer clutch 5 is housed.Smooth starting, parking, the speed governing of heavy-duty motor during this system can realize.
Working process can be divided into following several stages:
Pre-boot phase: computer control system starts module, and frequency control motor 4 first starts, and pinion carrier 6 maintains static.Frequency control motor 4 drives heavy-duty motor 2 rotors runnings by power-transfer clutch 5, cylindrical wheel 3 and planet combination mechanism 1, in the good situation of lubricating condition, can start heavy-duty motor 2 rotors according to predefined start up curve.In the time that heavy-duty motor 2 rotors reach rated speed of rotation, connect heavy-duty motor 2 power supplys, heavy-duty motor smooth starting.
The unloading phase of load: frequency control motor 4 is decelerated to zero gradually according to predefined curve, the rotating speed of dual gear c is decelerated to zero thereupon, pinion carrier 6 starting of creeping, and the power of heavy-duty motor 2 will progressively be loaded in pinion carrier 6, thereby drive load to start.
The speed governing stage: computer control system speed adjusting module, regulate frequency control motor 4 rotating speeds, by the synthetic rotating speed of planet combination mechanism 1, load can realize the function of stepless speed regulation of expection with heavy-duty motor 2.
Shutdown phase: computer control system brake module, frequency control motor 4 is to setting speed, now, speed under load is zero, when disconnecting heavy-duty motor 2 power supply, frequency control motor 4 is according to predefined curve reduction of speed, until speed is zero, disconnect frequency control motor 4 power supplys, realize the soft stop of system.
Embodiment 2
Referring to Fig. 4, Fig. 5, Fig. 6 and Fig. 7, the mechanical system of the another kind of scheme of the present invention comprises planet combination mechanism 1, heavy-duty motor 2, cylindrical wheel 3 and frequency control motor 4, dual gear c left end is inner gear c1, engage with the satellite gear b of planet combination mechanism 1, right-hand member is external gear c2, engage with cylindrical wheel 3, frequency control motor 4 is connected with the sun wheel a of planet combination mechanism 1 by coupler, heavy-duty motor 2 is connected with cylindrical wheel 3 by coupler, the external gear c2 of the dual gear c of cylindrical wheel 3 and planet combination mechanism 1 is connected, between frequency control motor 4 and planet combination mechanism 1, power-transfer clutch 5 is housed.Smooth starting, parking, the speed governing of heavy-duty motor during this system can realize.
Working process can be divided into following several stages:
Pre-boot phase: computer control system starts module, and frequency control motor 4 first starts, and pinion carrier 6 maintains static; Frequency control motor 4 drives heavy-duty motor 2 rotors runnings by power-transfer clutch 5, planet combination mechanism 1 and cylindrical wheel 3, in the good situation of lubricating condition, can start heavy-duty motor 2 rotors according to predefined start up curve; In the time that heavy-duty motor 2 rotors reach rated speed of rotation, connect heavy-duty motor 2 power supplys, heavy-duty motor 2 smooth startings.
The unloading phase of load: frequency control motor 4 is decelerated to zero gradually according to predefined curve, the rotating speed of dual gear c is decelerated to zero thereupon, pinion carrier 6 starting of creeping, and the power of heavy-duty motor 2 will progressively be loaded in pinion carrier 6, and drive load to start.
The speed governing stage: computer control system speed adjusting module, regulate frequency control motor 4 rotating speeds, by the synthetic rotating speed of planet combination mechanism 1, load can realize the function of stepless speed regulation of expection with heavy-duty motor 2.
Shutdown phase: computer control system brake module, frequency control motor 4 is to setting speed, now, speed under load is zero, when disconnecting heavy-duty motor 2 power supply, frequency control motor 4 is according to predefined curve reduction of speed, until speed is zero, disconnect frequency control motor 4 power supplys, realize the soft stop of system.
The present invention can be applicable to motor power control.When concrete enforcement, heavy-duty motor is chosen threephase asynchronous machine by working machine requirement, frequency control motor is chosen the AC three phase asynchronous motor of AC servo motor or frequency control, planet combination mechanism and cylindrical wheel according to designing requirement by productions such as reductor factory, Gear Processing factories, power-transfer clutch according to designing requirement by the processing of power-transfer clutch factory.
Claims (4)
1. a high-power combined type infinite speed variation energy-saving dynamic system, comprise the control system being formed by computing machine, system startup module, Braking system module, stepless speed regulation module, frequency converter and the mechanical system being formed by planet combination mechanism, heavy-duty motor, cylindrical wheel, frequency control motor, it is characterized in that: described heavy-duty motor is connected with the sun wheel of described planet combination mechanism by coupler, described frequency control motor is connected with described cylindrical wheel by coupler, and the external gear of described cylindrical wheel and dual gear is connected; Described frequency control motor is by the external gear rotation speed change of dual gear described in described cylindrical wheel control, described heavy-duty motor turns round with rated speed of rotation, the sun wheel of planet combination mechanism described in transmission, and by the synthetic rotating speed of described planet combination mechanism, exported by pinion carrier.
2. a high-power combined type infinite speed variation energy-saving dynamic system, comprise the control system being formed by computing machine, system startup module, Braking system module, stepless speed regulation module, frequency converter and the mechanical system being formed by planet combination mechanism, heavy-duty motor, cylindrical wheel, frequency control motor, it is characterized in that: described frequency control motor is connected with the sun wheel of described planet combination mechanism by coupler, described heavy-duty motor is connected with described cylindrical wheel by coupler, and the external gear of described cylindrical wheel and dual gear is connected; The rotation speed change of the sun wheel of planet combination mechanism described in described frequency control motor control, described heavy-duty motor turns round with rated speed of rotation, by the external gear of dual gear described in described spur gear drive, and by the synthetic rotating speed of described planet combination mechanism, exported by pinion carrier.
3. high-power combined type infinite speed variation energy-saving dynamic system according to claim 1 and 2, is characterized in that: between described frequency control motor and described planet combination mechanism, power-transfer clutch is housed.
4. high-power combined type infinite speed variation energy-saving dynamic system according to claim 1 and 2, is characterized in that: described dual gear right-hand member is external gear, and engage with cylindrical wheel, left end is inner gear, engages with the satellite gear of planet combination mechanism.
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| CN201410293661.8A CN104029594A (en) | 2014-06-25 | 2014-06-25 | High-power combined type stepless speed regulating energy conservation power system |
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| CN201410293661.8A CN104029594A (en) | 2014-06-25 | 2014-06-25 | High-power combined type stepless speed regulating energy conservation power system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907359A (en) * | 2017-03-29 | 2017-06-30 | 福建工程学院 | A kind of electric driver for realizing energy regenerating |
| CN108327497A (en) * | 2018-01-25 | 2018-07-27 | 北京长城华冠汽车科技股份有限公司 | Electric drive axle system |
| CN109450167A (en) * | 2019-01-14 | 2019-03-08 | 中国船舶重工集团公司第七0三研究所 | A kind of mechatronics integration speed-regulating system and its soft-start method |
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| US5947854A (en) * | 1997-05-08 | 1999-09-07 | Worksmart Energy Enterprises, Inc. | Combined variable-speed drive and speed reducer for pumps and fans |
| US20100144487A1 (en) * | 2008-12-08 | 2010-06-10 | Hyundai Motor Company | Motor-generator system driven by v-belt |
| CN202106865U (en) * | 2011-05-24 | 2012-01-11 | 刘杭先 | Novel electric automobile |
| CN202732867U (en) * | 2012-06-18 | 2013-02-13 | 温州大学 | Electric control stepless speed regulation device |
| CN103742620A (en) * | 2014-01-22 | 2014-04-23 | 武汉大学 | Intelligent high-power mechatronic speed adjusting device |
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2014
- 2014-06-25 CN CN201410293661.8A patent/CN104029594A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5947854A (en) * | 1997-05-08 | 1999-09-07 | Worksmart Energy Enterprises, Inc. | Combined variable-speed drive and speed reducer for pumps and fans |
| US20100144487A1 (en) * | 2008-12-08 | 2010-06-10 | Hyundai Motor Company | Motor-generator system driven by v-belt |
| CN202106865U (en) * | 2011-05-24 | 2012-01-11 | 刘杭先 | Novel electric automobile |
| CN202732867U (en) * | 2012-06-18 | 2013-02-13 | 温州大学 | Electric control stepless speed regulation device |
| CN103742620A (en) * | 2014-01-22 | 2014-04-23 | 武汉大学 | Intelligent high-power mechatronic speed adjusting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106907359A (en) * | 2017-03-29 | 2017-06-30 | 福建工程学院 | A kind of electric driver for realizing energy regenerating |
| CN106907359B (en) * | 2017-03-29 | 2018-12-21 | 福建工程学院 | A kind of electric driver for realizing energy regenerating |
| CN108327497A (en) * | 2018-01-25 | 2018-07-27 | 北京长城华冠汽车科技股份有限公司 | Electric drive axle system |
| CN109450167A (en) * | 2019-01-14 | 2019-03-08 | 中国船舶重工集团公司第七0三研究所 | A kind of mechatronics integration speed-regulating system and its soft-start method |
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Application publication date: 20140910 |