CN2549648Y - High-performance frequency converter speed regulator - Google Patents
High-performance frequency converter speed regulator Download PDFInfo
- Publication number
- CN2549648Y CN2549648Y CN02223487U CN02223487U CN2549648Y CN 2549648 Y CN2549648 Y CN 2549648Y CN 02223487 U CN02223487 U CN 02223487U CN 02223487 U CN02223487 U CN 02223487U CN 2549648 Y CN2549648 Y CN 2549648Y
- Authority
- CN
- China
- Prior art keywords
- stator magnetic
- frequency
- magnetic linkage
- stator
- variable
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The utility model relates to a high-performance frequency converter speed regulator which is used for the frequency conversion adjusting of an asynchronism electromotor. The utility model utilizes the revising unit of a stator magnetic chain to revise the stator side resistance, thereby guaranteeing the electromotor stator magnetic chain being equal to the specified value and making the frequency converter currency be most effectively utilized. The rotating rules have big rate to the current (including zero speed); the decoupling control function and the robustness are all good; the utility model is applicable to the intercommunion driving of varied electric orbit vehicles and green electric cars as the normal industrials. In terms of the users who own two or more than two frequency converter devices with same specifications and parameters, people can precede the test to the products in filed without special testing device, and because the utility model adopts the energy feedback and the electro-rate is quite small. The utility model is also applicable to the test of power asynchronous motors of 60 Hz or 50Hz.
Description
The utility model relates to a kind of electric machine speed regulation technology, the variable-frequency governor that particularly a kind of asynchronous machine is used.
In the variable-frequency governor that existing asynchronous machine is used, exist because the motor stator magnetic linkage is underexcitation or cross to encourage and cause the excitation saturation current, its result causes the variable-frequency governor electric current to can not get effective utilization, thereby causes the problem that descends motor torque starting torque particularly descends.
The purpose of this utility model is: propose a kind of high performance variable frequency speed regulation device on the basis of comprehensive multiple technologies.
The correcting unit 09 that comprises stator magnetic linkage and contain the stator flux observer link and at input side by handing under DC power supply after the straight rectification or the situation by the frequency control main unit 08 of the stator voltage vector oriented vector control of public direct-current power supply power supply or stator magnetic linkage oriented vector control, the technical solution of the utility model is described as follows by different level:
First input of the correcting unit of stator magnetic linkage, the set-point Ψ of stator magnetic linkage
* 1From potentiometer R
ΨMiddle tap, V
+Be the control positive supply; Second input of the correcting unit of stator magnetic linkage, the measured value Ψ of stator magnetic linkage
1From the frequency control main unit; And the output V of the correcting unit of stator magnetic linkage
RBe sent to the frequency control main unit; The stator angular frequency W of frequency control main unit
1Input is from potentiometer R
WMiddle tap; The given straight Ψ of stator magnetic linkage
* 1Be sent to the frequency control main unit again simultaneously.
The formation of stator flux observer link is drawn from invention number of patent application 01106851.5 " observation procedure that contains the parameter of based variable in the variable frequency speed modulation of asynchronous motor ".
The formation of the correcting unit of stator magnetic linkage is drawn from ZL00225853.5 patent " adjuster of the stator magnetic linkage that variable frequency speed modulation of asynchronous motor is used ", but in this patent, the set-point Ψ of stator magnetic linkage
* 1With symbol VC0 representative, the measured value Ψ of stator magnetic linkage
1With symbol VC1 representative, in addition also especially with regard to the V that exports of the correcting unit of stator magnetic linkage
RThereby how signal spends proofread and correct the stator beginning and establish resistance and guarantee that the motor stator magnetic linkage equals its set-point and done detailed explanation.
Variable-frequency governor can also be done two platform operations except that the separate unit operation, this two asynchronous motors links to each other by shaft coupling, and every asynchronous motors each has its variable-frequency governor.
Below in conjunction with accompanying drawing the utility model is further elaborated.
Fig. 1 is the separate unit variable-frequency governor figure of no speed probe.
Fig. 2 is the separate unit variable-frequency governor figure that speed probe is arranged.
Two platform variable-frequency governor figure that Fig. 3 is used to test.
Fig. 4 is asynchronous machine operation characteristic figure.
In the square frame 00 in Fig. 1,08 is stator voltage vector oriented vector control frequency control main unit, that draws the Fig. 5 (A) in invention number of patent application 00113520.1 " the frequency-conversion voltage-varying speed method of asynchronous machine high torque (HT) vector control ", changes stator angular frequency W into but done herein to simplify
1Directly input; In addition with given (promptly default) stator magnetic linkage Ψ
* 1(being C1 in the original text) reveals and is drawn in square frame outside, and the stator flux observer value Ψ that includes with the frequency control main unit
1Be sent to the correcting unit 09 of stator magnetic linkage simultaneously, the latter's output V
RSend back to again in the frequency control main unit.The three phase variable frequency of frequency control main unit exchanges and outputs to asynchronous machine 02, stator angular frequency W among Fig. 1
1With given stator magnetic linkage Ψ
* 1Respectively by potentiometer R
WAnd R
ΨMiddle tap input, V
+Be the control positive supply.
Fig. 2 draws the Fig. 5 (B) in invention number of patent application 00113520.1 " the frequency-conversion voltage-varying speed method of asynchronous machine high torque (HT) vector control ", and square frame 00 now repeats content relevant with square frame 01 in this patent specification as follows as hereinbefore among Fig. 2:
Be output as rotating speed angular frequency W with the speed probe 03 of asynchronous machine 02 shaft coupling
m, multiply each other the back at the output slip angular frequency W of adder-subtracter 11 places and torque controller 20 with motor pole logarithm p
20Addition gets stator angular frequency W
1, and be sent to square frame 00; Torque instruction value M
* EDeduct torque value of feedback M at adder-subtracter 12 places
EAnd as the input of torque controller 20; When switch S S placed set, torque instruction value was from the output (being used to constitute the closed-loop control of rotating speed angular frequency) of rotating speed angular frequency adjuster 21, and when switch S S placed position " 2 ", torque instruction value was from potentiometer R
MEMiddle tap input and constitute the torque closed-loop control, M
* E〉=0 is electronic control, M
* E＜0 is Generation Control, V
+With V
-Be respectively control just with negative supply; From potentiometer R
WmThe rotating speed angular frequency command value W of middle tap input
m *Deduct rotating speed angular frequency W at adder-subtracter 13 places
mThe back constitutes the closed-loop control of rotating speed angular frequency as the input of rotating speed angular frequency adjuster 21; Torque controller and rotating speed angular frequency adjuster all adopt the proportional integral mode.M
ECalculate by following formula:
M
E=(V
1* I
Q-I
1* I
1* R
1) * 1.5 * p/W
1(formula 1)
In the following formula: V
1With I
1Be respectively the phase stator voltage of motor and the amplitude of stator current mutually, I
QBe phase stator current I
1At V
1Projection on the axle, R
1Be the stator resistance after proofreading and correct, p is the motor pole logarithm, W
1Be the stator angular frequency.
For the stator magnetic linkage oriented vector control of known technology, Fig. 1 and Fig. 2 are available equally, but square frame 08 content must (C1 be Ψ among the former figure as shown in Figure 5 among the letters patent book number ZL00225853.6
1 *), and develop into (formula 1) this moment
M
E=Ψ
1 ** IQ
*1.5 * p (formula 2)
In the following formula: I
QBe phase stator current I
1With Ψ
1 *The axle projection on the direction that meets at right angles.
In Fig. 3: in order to be used for test, the variable-frequency governor 01A that links with the asynchronous machine 02A that makes electric operation makes electric operation, the variable-frequency governor 01B that links with the asynchronous machine 02B that makes generator operation makes generator operation, and these two variable-frequency governors DC power supply V after the straight rectification of the shared friendship of its input side
DCOr shared public direct-current power supply V
DC
In order to reduce the testing equipment kind, the specifications parameter of this two asynchronous motors is taken as identical, and the specifications parameter of corresponding these two variable-frequency governors (its inner structure is seen square frame 01 among Fig. 2) also is taken as identical.At this moment variable-frequency governor 01A adopts the electronic control of rotating speed angular frequency closed loop, and variable-frequency governor 01B adopts torque closed loop Generation Control (M
* E＜0), to constitute energy back; The given stator magnetic linkage Ψ of two variable-frequency governors
* 1Identical, and by a potentiometer R
ΨMiddle tap input; Two shared speed probes 03 of variable-frequency governor; The M that draws from variable-frequency governor 01A
EThen make the usefulness of observation.
You characteristics of the present utility model are:
One, online stator side resistance is set value is corrected to instantaneous value, thereby guarantees that stator flux of motor equals it Set-point. Motor neither can underexcitation You can not crossed to encourage and causes the excitation saturation current, and the result makes inverter current Obtain the utilization of Zui You effect, the Zhuan square is to the ratio big (when comprising zero-speed) of electric current, and is electronic and dynamic brake is equal Can, economic effect is very remarkable.
Two, Zai torque adjustment device parameter immobilizes in the situation, even Zhuan time constant has changed 3.1 times of (0.1s ∽ 0.31s), through the MATLAB simulation result, step torque response time≤25ms, stator magnetic linkage does not have The You variation is so the decoupling zero of system control function and robustness are all good.
Three, need not as Zhuan flux linkage orientation vector controlled, must carry out the Zhuan subparameter real-time monitored of difficulty; And Direct Torque Control (DTC) mode You has low and big the asking of torque pulsation of stall start Zhuan square usually Topic.
Four, the correcting unit of stator magnetic linkage has multiple duty: such as pre-excitation stage implementation under the Zai motor zero-speed (Zhi working time Yu not has a rest and time-interleavedly advances to carry out discontinuous operation Zhi behind continuous duty and the Zai electric motor starting OK) and Zai carries out to stator flux observer Zhi that digital filtering is processed when needing and surpass when Zhuan speed angular frequency 0.3 carry out cease operation Zhi etc. during 0.8 times of fast angular frequency of base of ∽, getting in addition for Ze, Zu closes.
Five, through related documents is retrieved, illustrate that this patent has the powerful market competitiveness, be fit to Yong Zuo is general industry, the AC Drive of various electric track vehicle and green electric automobile.
Six, Zai frequency control Zhong, the requirement of You is the asynchronous machine operation characteristic as shown in Figure 4, i.e. the fast angular frequency W of Zai basemb *(W
mb) and be constant child magnetic linkage Ψ when following1 *＝Ψ
10 *With permanent torque M* E＝M
* E0Characteristic, and the fast angular frequency W of Zai basemb *(W
mb) be permanent power P when above0(corresponding M* E＝P
0/W
m *Or P0/W
m) and constant child voltage V10Characteristic (corresponding Ψ1 *＝V
10/W
m *Or V10/W
m). Zai Zhe But Yu has calculated Ψ by described requirement earlier in the Zhong situation1 *And M* EZhi and with Wm *(W
m) for becoming form, address system deposits memory (EPROM or FLASHROM) Zhong in, and Yong is to replace Fig. 2 Yu the potentiometer R of Fig. 3 ZhongΨWith potentiometer RME, when needing Yong with Wm *(W
m) for address lookup table draws, answer Zhu to be intended to Fig. 3 Zhong M* EMust get negative value.
Seven, in Fig. 3 owing to adopted energy back, so electricity consumption is seldom, only be energy loss, consume and windage consumption etc. as copper loss, iron loss, mechanical friction.
Eight, be supporting delivery together as the variable-frequency governor among Fig. 3 and asynchronous machine, then single test is got off, realized the test in the total power and the full range of speeds to variable-frequency governor and asynchronous machine simultaneously.This is for the user of the RHVC of buying two or above same specifications parameter, just can need not increase dedicated experiments equipment and electricity consumption seldom using the scene that product is tested examination, thereby strengthened the confidence of user greatly to ordered product quality, this effect be the common product advertisement can not obtain.
Nine, Fig. 3 is equally applicable to the asynchronous machine performance test under the 60HZ frequency.
Claims (2)
1, the variable-frequency governor used of a kind of asynchronous machine, comprise the correcting unit (09) of stator magnetic linkage and contain the stator flux observer link and at input side by DC power supply after handing over straight rectification or by the stator voltage vector oriented vector control of public direct-current power supply power supply or the frequency control main unit (08) of stator magnetic linkage oriented vector control, it is characterized in that: first input of the correcting unit of stator magnetic linkage, the set-point (Ψ of stator magnetic linkage
* 1) from potentiometer (R
Ψ) middle tap, (V
+) for controlling positive supply; Second input of the correcting unit of stator magnetic linkage, the measured value (Ψ of stator magnetic linkage
1) from the frequency control main unit; And the output (V of the correcting unit of stator magnetic linkage
R) be sent to the frequency control main unit.
2, variable-frequency governor according to claim 1 is characterized in that: said variable-frequency governor can also be done two platform operations except that the separate unit operation, this two asynchronous motors links to each other by shaft coupling, and every asynchronous motors each has its variable-frequency governor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02223487U CN2549648Y (en) | 2002-02-21 | 2002-02-21 | High-performance frequency converter speed regulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02223487U CN2549648Y (en) | 2002-02-21 | 2002-02-21 | High-performance frequency converter speed regulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2549648Y true CN2549648Y (en) | 2003-05-07 |
Family
ID=33701165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN02223487U Expired - Fee Related CN2549648Y (en) | 2002-02-21 | 2002-02-21 | High-performance frequency converter speed regulator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2549648Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102510260A (en) * | 2011-11-17 | 2012-06-20 | 华中科技大学 | Induction machine vector control method taking account of iron loss |
| CN102651629A (en) * | 2011-02-23 | 2012-08-29 | 上海捷能汽车技术有限公司 | On-line estimation method for permanent magnet flux linkage |
-
2002
- 2002-02-21 CN CN02223487U patent/CN2549648Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102651629A (en) * | 2011-02-23 | 2012-08-29 | 上海捷能汽车技术有限公司 | On-line estimation method for permanent magnet flux linkage |
| CN102651629B (en) * | 2011-02-23 | 2016-03-23 | 上海捷能汽车技术有限公司 | A kind of estimation on line method of permanent magnet flux linkage |
| CN102510260A (en) * | 2011-11-17 | 2012-06-20 | 华中科技大学 | Induction machine vector control method taking account of iron loss |
| CN102510260B (en) * | 2011-11-17 | 2014-03-12 | 华中科技大学 | Induction machine vector control method taking account of iron loss |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2484574C2 (en) | Power converter | |
| Ghedamsi et al. | Control of wind generator associated to a flywheel energy storage system | |
| Collins | Torque and slip behavior of single-phase induction motors driven from variable-frequency supplies | |
| CN108390602B (en) | A kind of direct prediction power control method of hybrid exciting synchronous motor | |
| CN1285652A (en) | Method for braking vector controlled induction motor, controller and storage medium | |
| CN101180788A (en) | AC rotating machine control device and method | |
| CN106849812A (en) | A kind of asynchronous motor control method based on flux compensation | |
| CN100468908C (en) | Rotary electromagnetic type uniform tidal current controller | |
| Atkinson et al. | A vector-controlled doubly-fed induction generator for a variable-speed wind turbine application | |
| CN110474589A (en) | A kind of control method of induction machine efficiency optimization | |
| CN2549648Y (en) | High-performance frequency converter speed regulator | |
| Zhang et al. | Direct voltage vector control for field weakening operation of PM machines | |
| Zhou et al. | A simplified method for dynamic control of brushless doubly-fed machines | |
| CN111245310B (en) | Asynchronous starting permanent magnet synchronous motor quick starting method based on torque characteristics | |
| CN2135869Y (en) | Double-stator induction motor and application device thereof | |
| Thu et al. | α-β Reference Frame Modeling and Implementation of VVVF Three-phase Inverter for Induction Motor Drive | |
| Zhou et al. | Design of a Simulation and Analysis System for Asynchronous Motor Operation based on MATLAB | |
| Van Dessel et al. | Simulation of grid connected PM generator for wind turbines | |
| Javadi | Induction motor drive using fuzzy logic | |
| Simões | A Concise History of Induction Motor Drives—Part 1 [History] | |
| CN118017902B (en) | Low-frequency emergency dragging device | |
| CN106887958A (en) | Permagnetic synchronous motor is electronic and generating alternate run system and its adjusting method | |
| Choudhury et al. | Determination of operating conditions of submersible induction motors | |
| Van Dessel et al. | Power electronic grid connection of PM synchronous generator for wind turbines | |
| Damásio | Design and Implementation of an Elevator System Operated by a Sensorless Field-Oriented Controller |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030507 |