CN108599354A - Multi-machine system energy saver based on Intelligent PID Control - Google Patents
Multi-machine system energy saver based on Intelligent PID Control Download PDFInfo
- Publication number
- CN108599354A CN108599354A CN201810495304.8A CN201810495304A CN108599354A CN 108599354 A CN108599354 A CN 108599354A CN 201810495304 A CN201810495304 A CN 201810495304A CN 108599354 A CN108599354 A CN 108599354A
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- bus
- circuit
- insulated gate
- intelligent pid
- supercapacitive cell
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
- Inverter Devices (AREA)
- Dc-Dc Converters (AREA)
Abstract
The present invention provides a kind of multi-machine system energy saver based on Intelligent PID Control, including supercapacitive cell and Energy Saving Control unit；Supercapacitive cell includes the super capacitor connection in series-parallel composition of several parallel connections；Energy Saving Control unit includes booster circuit, reduction voltage circuit, intelligent PID controller, and supercapacitive cell is connected by booster circuit, reduction voltage circuit and DC bus respectively, and intelligent PID controller is connect with DC bus obtains direct current bus bar pressure；When intelligent PID controller judges that DC bus-bar voltage rises, PWM wave is sent to reduction voltage circuit, motor is charged by DC bus to supercapacitive cell；When intelligent PID controller judges that DC bus-bar voltage declines, PWM wave is sent to booster circuit, supercapacitive cell discharges driving motor to DC bus.
Description
Technical field
The present invention relates to a kind of electric motor energy-saving technique, especially a kind of multi-machine system based on Intelligent PID Control is energy saving
Device.
Background technology
Motor and its system are widely used in China's energy, chemical industry, metallurgy, petrochemical industry, chemical industry, coal, building materials, public set
It applies, multiple industries and the field such as household electrical appliance and Electric Traction, is the basis of China's industrial foundation.Calculate according to statistics, China
About 1,900,000,000 kW of motor ownership, about 3.8 trillion kWh of total power consumption account for the 64% of whole society's total electricity consumption, wherein industrial circle electricity
Machine total electricity consumption is 2.9 trillion kWh, accounts for about the 75% of commercial power, is qualified " large electricity consumer ".Huge energy consumption is drawn
The extensive research for electric motor energy-saving technique is sent out.In order to implement the theory of environmentally protective sustainable development, develop energy saving skill
Art seems particularly critical.
Currently, the core technology route in terms of electrical machine energy-saving is roughly divided into two classes.One kind is run for drive control algorithm
Efficiency promotes capacity usage ratio by improving control algolithm；The another kind of energy for waste introduces electric energy recovering system, into
Row energy recycling.
Invention content
The purpose of the present invention is to provide a kind of multi-machine system energy saver based on Intelligent PID Control realizes separate unit
Motor is independently energy saving and the group of multi-joint type motor is energy saving.
Realize that the technical solution of the object of the invention is：A kind of multi-machine system energy saver based on Intelligent PID Control, packet
Supercapacitive cell and Energy Saving Control unit are included, supercapacitive cell includes the super capacitor connection in series-parallel composition of several parallel connections；Section
Energy control unit includes booster circuit, reduction voltage circuit, intelligent PID controller, and supercapacitive cell passes through several boostings respectively
Circuit, reduction voltage circuit are connected from different DC bus, and intelligent PID controller connect acquisition DC bus two with several DC bus
Terminal voltage, supercapacitive cell both end voltage；When intelligent PID controller judges that DC bus-bar voltage rises, PWM wave is sent extremely
Reduction voltage circuit, motor are charged by DC bus to supercapacitive cell；When intelligent PID controller judges under DC bus-bar voltage
When drop, PWM wave is sent to booster circuit, supercapacitive cell discharges driving motor to DC bus.
Using above-mentioned apparatus, intelligent PID controller is according to collected DC bus both end voltage, supercapacitive cell two
Terminal voltage and DC bus target voltage values determine the duty ratio of the PWM wave of booster circuit, reduction voltage circuit so that DC bus two
Terminal voltage is equal to DC bus target voltage values.
Using above-mentioned apparatus, booster circuit, reduction voltage circuit are made of several insulated gate bipolar transistors, specifically include
One inductance, boosting insulated gate bipolar transistor, two decompression insulated gate bipolar transistors, diode, selecting switch, skies
Road, the second inductance relay module；First pin of wherein the first inductance is connecing supercapacitive cell just by the first relay module
The second pin of pole, the first inductance connects the collector of boosting insulated gate bipolar transistor, the first decompression insulated gate bipolar respectively
The emitter of transistor npn npn emitter and selecting switch fixing end, the insulated gate bipolar transistor that boosts connects super capacitor list respectively
Cathode, diode cathode and the DC bus cathode of member, the selection end of selecting switch respectively with dead circuit, second the first pin of inductance
Connection, dead circuit, the second pin of the second inductance are cloudy with the second decompression insulated gate bipolar transistor emitter and diode respectively
Pole connects, and the first decompression insulated gate bipolar transistor collector connects DC bus anode, the second drop by the second relay module
Pressure insulated gate bipolar transistor collector connects DC bus anode by third relay module, and boost insulated gate bipolar crystal
Pipe, the grid for being depressured insulated gate bipolar transistor are connect with the control terminal of intelligent PID controller respectively.
Compared with prior art, the present invention haing the following advantages：(1) energy saver of the invention, compared to electric energy feedback electricity
The technology of net will not cause higher hamonic wave to pollute in power grid；(2) energy saver of the invention, can not only realize single motor section
Can, can also be multi-joint type motor service after expansion, and possess and expand booster circuit, separately build two kinds of expansion modes of system architecture.
Possess bright prospects with broad applicability for single motor or the energy saver of pairs of design of electrical motor compared to existing,
Energy-efficient automation strategy is completed to realize；(3) energy saver of the invention, relative to traditional super capacitor power-saving technology, profit
With intelligent PID controller, adjusts PWM wave duty ratio and control IGBT break-make situations, the transmission voltage of regulated power can promote energy
The stability of transmission is measured, promotes feedback energy utilization ratio, and maintain the steady safe operation of motor.
The invention will be further described with reference to the accompanying drawings of the specification.
Description of the drawings
Fig. 1 is the mounting structure schematic diagram of the present invention.
Fig. 2 is the connection diagram of the super capacitor module of the present invention.
Fig. 3 is the energy-saving control system structural schematic diagram of the present invention.
Fig. 4 is present invention extension schematic diagram.
Fig. 5 is the control effect comparison diagram of the present invention.
Specific implementation mode
In conjunction with Fig. 1, the present invention can be mounted on multi-joint type electric system, realize the energy saving of system.Whole system structure
Including：Power grid three-phase alternating current 1, rectification circuit 2, drive and control of electric machine module 3, motor 4, DC bus 5, supercapacitive cell
6, Energy Saving Control unit 7.Wherein, power grid three-phase alternating current 1 connects multiple rectification circuits 2, is flowed after the voltage stabilizing of DC bus 5
Enter motor drive module 3, to carry out the driving of motor 4；It is female to be connected to a plurality of direct current for the Energy Saving Control unit 7 of energy saver
On line 5 and supercapacitive cell 6, by sensor acquire the voltage at 6 both ends of supercapacitive cell, charge discharge electric current information with
DC bus both end voltage, to judge the charging and discharging state of energy saver and take corresponding strategy.
Supercapacitive cell 6 includes that the super capacitor connection in series-parallel of several parallel connections forms；Energy Saving Control unit 7 includes boosting electricity
Road, reduction voltage circuit, intelligent PID controller, supercapacitive cell 6 pass through booster circuit, reduction voltage circuit and DC bus respectively
Connection, intelligent PID controller is connect with DC bus 5 obtains direct current bus bar pressure；When intelligent PID controller judges direct current mother
When 5 voltage of line rises, PWM wave is sent to reduction voltage circuit, motor 4 is charged by DC bus to supercapacitive cell；Work as intelligence
When PID controller judges that 5 voltage of DC bus declines, PWM wave is sent to booster circuit, supercapacitive cell 6 is to DC bus 5
Discharge driving motor 4.
In conjunction with Fig. 2, the super capacitor module 6 in energy saver of the present invention is made of several super capacitor connection in series-parallel, wherein
Basic super capacitor number, capacitance, pressure voltage, that is, series and parallel structure are loaded by Rated motor, DC bus-bar voltage and motor use
Power condition determines.
In conjunction with Fig. 3, the energy saver circuit is by supercapacitive cell, data acquisition circuit, optical coupling isolation circuit, relay
Protect circuit, booster circuit, reduction voltage circuit, Energy Saving Control unit composition.Wherein, relay module controls break-make, IGBT by I/O port
Break-make is controlled by PWM wave or I/O port, achievees the purpose that switch energy saver operating mode to limit current direction.
Booster circuit, reduction voltage circuit are made of several insulated gate bipolar transistors, specifically include the first inductance L1, boosting
Insulated gate bipolar transistor, two decompression insulated gate bipolar transistors, diode, selecting switch S1, dead circuit, the second inductance
L2 relay modules；The first pin of wherein the first inductance L1 connects the anode of supercapacitive cell 6 by the first relay module, and first
The second pin of inductance L1 connects the collector of boosting insulated gate bipolar transistor, the first decompression insulated gate bipolar crystal respectively
The emitter of pipe emitter and selecting switch fixing end, the insulated gate bipolar transistor that boosts connects supercapacitive cell 6 respectively
Draw respectively with dead circuit, the second inductance L2 first at the selection end of 5 cathode of cathode, diode cathode and DC bus, selecting switch S1
Foot connects, and dead circuit, the second pin of the second inductance L2 are depressured insulated gate bipolar transistor emitter and two poles with second respectively
Tube cathode connects, and the first decompression insulated gate bipolar transistor collector connects 5 anode of DC bus by the second relay module, the
Two decompression insulated gate bipolar transistor collectors connect 5 anode of DC bus by third relay module, and boost insulated gate bipolar
Transistor npn npn, the grid for being depressured insulated gate bipolar transistor are connect with the control terminal of intelligent PID controller respectively.
Two booster circuits, reduction voltage circuits are：(1) first relay module is opened, the second relay module is opened, third relay module
It closes；(2) first relay modules are opened, the second relay module is closed, third relay module is opened.Energy is transmitted to high-voltage section by low-pressure section
The circuit divided is known as booster circuit, and the circuit that energy is transmitted to low-pressure section by high-pressure section is known as reduction voltage circuit, is referred to as respectively
For BOOST and BUCK.Booster circuit, reduction voltage circuit control different IGBT (being controlled by PWM).Booster circuit uses PWM1,
And PWM2 and PWM3 just make IGBT shutdowns just.Reduction voltage circuit uses PWM2 or PWM3, while being also the selection to busbar,
PWM1 makes IGBT turn off.
In conjunction with Fig. 4, intelligent PID controller includes data acquisition circuit 7 and signal synthesis processing unit 8.Data acquisition electricity
Road 7 acquires 5 both end voltage of DC bus, 6 both end voltage of supercapacitive cell.Voltage of the signal synthesis processing unit 8 to acquisition
Judged：When judging that 5 voltage of DC bus rises, PWM wave is sent to reduction voltage circuit, motor 4 is by DC bus to super
Grade capacitor cell charging；When judging that 5 voltage of DC bus declines, send PWM wave to booster circuit, supercapacitive cell 6 to
The electric discharge driving motor 4 of DC bus 5.
Intelligent PID controller is according to 5 both end voltage of collected DC bus, 6 both end voltage of supercapacitive cell and straight
Stream 5 target voltage values of busbar determine the duty ratio of the PWM wave of booster circuit, reduction voltage circuit so that 5 both end voltage of DC bus etc.
In 5 target voltage values of DC bus.
In conjunction with Fig. 4, the present apparatus can increase number of motors with prolongation structure.
It (1), can be by increasing boosting electricity since intelligent PID controller of the present invention has universality when number of motors is less
Way amount makes super capacitor group complete one-to-many electricity and transmits；
It (2), can be by increasing boosting electricity since intelligent PID controller of the present invention has universality when number of motors is more
Way amount, an and super capacitor group is made to correspond to motor as one group, replicated architecture expansion group number reach energy saving purpose.
Using the intelligent PID control method of the above-mentioned multi-machine system energy saver based on Intelligent PID Control, for controlling
The duty ratio of PWM wave is to reach VbusStable purpose.It the described method comprises the following steps：
(1) according to super-capacitor voltage VSCWith 5 voltage V of DC busbusNumerical relation i.e. between busbar voltage is built
Mould；
(2) threshold value of multi-mode switching is determined according to the change rate of PWM duty cycle α；
(3) according to the duty ratio characteristics of each piece of Threshold segmentation, the pid parameter under different mode is determined to meet the dynamic of system
State, static characteristic.
There are three types of patterns for the present apparatus：
Pattern one is that capacitance transmits energy to DC bus, is at this time booster circuit, S1 selects dead circuit, is controlled by PWM wave
PWM_BOOST1 break-makes carry out energy transfer, the busbar Vbus1 or Vbus2 for selecting energy to flow to by relay module.
Pattern two be DC bus to capacitive transmission energy, be at this time reduction voltage circuit, S1 select dead circuit, relay module with
The selection of PWM_BUCK1, PWM_BUCK2 control bus, the break-make that PWM_BUCK1 or PWM_BUCK2 is controlled by PWM carry out energy
Amount transfer.
Energy transmission of the pattern three between busbar and busbar is at this time reduction voltage circuit, and S1 selects the sky directions L2, is disconnected super
The PWM_BOOST1 and relay of capacitance group side, IO gate respective bus bars side relay, and PWM wave controls corresponding PWM_BUST to control
Reduction voltage circuit direction processed realizes that the energy between busbar is mutually depressured transmission.
The effect of intelligent PID controller is, with Vbus.setOn the basis of, by acquiring VSCDifference in unit interval and
VbusError amount, carry out control algolithm resolving, obtain driving four IGBT PWM wave duty cycle alpha, generate corresponding PWM wave,
Reach V with thisbus=Vbus.setControl purpose, V in conventional method is made up with thisbusThe defect that can decline at any time.
Wherein, control algolithm selects intelligent PID algorithm, i.e., according to VSCRange and VSCInfluence to plant model is true
The threshold value for determining multi-mode switching, selects different pid parameters in different Threshold segmentation blocks, is under different system characteristic to meet
System dynamic characteristics and static characteristics.
PID control rule：
PID transmission function forms：
If you need to expand number of motors, with reference to super capacitor group charge-discharge circuit principle and DC bus I and DC bus II
Between two-way step down circuit expanded.
Fig. 5 is the control effect comparison diagram of the present invention.During super capacitor transmits electric energy to DC bus, do not apply
When adding closed-loop control, with the reduction of super capacitor group voltage, the voltage of DC bus also decreases.And add intelligence
After PID controller, by adjusting PWM wave duty cycle alpha, IGBT break-make situations are controlled so that DC bus-bar voltage is not with super
The reduction of capacitance group voltage and reduce, realize stable electric energy transmission.
Difference and existing energy saver in summary, the present invention has carried out technical strategies realization, simple in structure easily-controllable,
Easily expand, can support the energy saving of multi rack motor, maintain the steady of energy transmission, possess higher energy conversion efficiency with extensively
Applicability.
Claims (3)
1. a kind of multi-machine system energy saver based on Intelligent PID Control, including supercapacitive cell (6) and Energy Saving Control list
First (7), which is characterized in that
Supercapacitive cell (6) includes the super capacitor connection in series-parallel composition of several parallel connections；
Energy Saving Control unit (7) includes booster circuit, reduction voltage circuit, intelligent PID controller,
Supercapacitive cell (6) is connected by several booster circuits, reduction voltage circuit from different DC bus respectively,
Intelligent PID controller connect acquisition DC bus (5) both end voltage, supercapacitive cell (6) with several DC bus (5)
Both end voltage；
When intelligent PID controller judges that DC bus (5) voltage rises, PWM wave is sent to reduction voltage circuit, motor (4) passes through
DC bus charges to supercapacitive cell；
When intelligent PID controller judges that DC bus (5) voltage declines, PWM wave is sent to booster circuit, supercapacitive cell
(6) to DC bus (5) electric discharge driving motor (4).
2. the apparatus according to claim 1, which is characterized in that intelligent PID controller is according to collected DC bus (5)
Both end voltage, supercapacitive cell (6) both end voltage and DC bus (5) target voltage values determine booster circuit, reduction voltage circuit
PWM wave duty ratio so that DC bus (5) both end voltage be equal to DC bus (5) target voltage values.
3. the apparatus according to claim 1, which is characterized in that booster circuit, reduction voltage circuit are by several insulated gate bipolars
Transistor is constituted, and it is brilliant to specifically include the first inductance (L1), boosting insulated gate bipolar transistor, two decompression insulated gate bipolars
Body pipe, diode, selecting switch (S1), dead circuit, the second inductance (L2) relay module；Wherein
First pin of the first inductance (L1) connects the anode of supercapacitive cell (6), the first inductance by the first relay module
(L1) second pin connects the collector of boosting insulated gate bipolar transistor, the first decompression insulated gate bipolar transistor respectively
Emitter and selecting switch fixing end,
The emitter of boosting insulated gate bipolar transistor connects the cathodes of supercapacitive cell (6), diode cathode and straight respectively
Busbar (5) cathode is flowed,
The selection end of selecting switch (S1) is connect with dead circuit, the first pin of the second inductance (L2) respectively,
Dead circuit, the second pin of the second inductance (L2) are depressured insulated gate bipolar transistor emitter and diode with second respectively
Cathode connects,
First decompression insulated gate bipolar transistor collector connects DC bus (5) anode by the second relay module,
Second decompression insulated gate bipolar transistor collector connects DC bus (5) anode by third relay module,
Boost insulated gate bipolar transistor, be depressured insulated gate bipolar transistor grid respectively with intelligent PID controller
Control terminal connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495304.8A CN108599354B (en) | 2018-05-22 | 2018-05-22 | Multi-motor system energy-saving device based on intelligent PID control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810495304.8A CN108599354B (en) | 2018-05-22 | 2018-05-22 | Multi-motor system energy-saving device based on intelligent PID control |
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| Publication Number | Publication Date |
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| CN108599354A true CN108599354A (en) | 2018-09-28 |
| CN108599354B CN108599354B (en) | 2021-09-10 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917020A (en) * | 2010-08-04 | 2010-12-15 | 长沙理工大学 | Lift energy feedback, reactive compensation and switched-off emergency running method and system |
| CN102029926A (en) * | 2010-12-08 | 2011-04-27 | 浙江省电力试验研究院 | Standardized current conversion device of electric vehicle and distributed power source |
| CN103259286A (en) * | 2013-05-06 | 2013-08-21 | 安徽理工大学 | Three-level Z source wind power generation grid-connected system |
| CN106276445A (en) * | 2016-09-23 | 2017-01-04 | 南京理工大学 | A kind of elevator drives control, energy saving integrated system and method |
| KR20180014166A (en) * | 2015-07-21 | 2018-02-07 | 다이슨 테크놀러지 리미티드 | Battery charger |
-
2018
- 2018-05-22 CN CN201810495304.8A patent/CN108599354B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101917020A (en) * | 2010-08-04 | 2010-12-15 | 长沙理工大学 | Lift energy feedback, reactive compensation and switched-off emergency running method and system |
| CN102029926A (en) * | 2010-12-08 | 2011-04-27 | 浙江省电力试验研究院 | Standardized current conversion device of electric vehicle and distributed power source |
| CN103259286A (en) * | 2013-05-06 | 2013-08-21 | 安徽理工大学 | Three-level Z source wind power generation grid-connected system |
| KR20180014166A (en) * | 2015-07-21 | 2018-02-07 | 다이슨 테크놀러지 리미티드 | Battery charger |
| CN106276445A (en) * | 2016-09-23 | 2017-01-04 | 南京理工大学 | A kind of elevator drives control, energy saving integrated system and method |
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| Publication number | Publication date |
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| CN108599354B (en) | 2021-09-10 |
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