CN1047425A - Controller for alternating-eddy-current braking speed regulation - Google Patents
Controller for alternating-eddy-current braking speed regulation Download PDFInfo
- Publication number
- CN1047425A CN1047425A CN 89103478 CN89103478A CN1047425A CN 1047425 A CN1047425 A CN 1047425A CN 89103478 CN89103478 CN 89103478 CN 89103478 A CN89103478 A CN 89103478A CN 1047425 A CN1047425 A CN 1047425A
- Authority
- CN
- China
- Prior art keywords
- speed
- circuit
- eddy
- control
- motor
- 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.)
- Withdrawn
Links
Abstract
The present invention relates to use semiconductor device pass through regulate motor rotor resistance and controlled vortex flow brake exciting current method automatically, realize regulating the device of AC electrical motor speed.
This device adopts two feedback control circuits, constitute the control system of two closed loops by a set-point circuit, amplifier controller, speed regulator, master controller and speed measuring motor, control system is that core is formed by three integrated circuits, has simple in circuits, reliable and stable, control performance is good, and it is convenient to debug, overhaul, advantages such as applied range.
Description
The present invention relates to measure the speed of motor, and compare with a given physical quantity, so that the motor speed control device of governing speed, particularly use the method for passing through to regulate motor rotor resistance and automatic controlled vortex flow brake exciting current of semiconductor device, realize regulating the device of AC electrical motor speed; Or crane driven by power control system or the device used.
Therefore characteristics such as it is big that the speed governing of alternating-eddy-current braking device has braking moment, and overload capacity is strong, and it is steady to turn round have obtained using widely.In recent years, Germany MAN company and Mitsubishi Electric Co. have all formed series of products.The Germany patent DE2951839 that MAN company gets permission " Elektrischer Antrieb; insbesondere f ü r Hebezeuge " discloses a kind of electrically driven that is used for hoisting machinery, this class device mainly is by an adjusting device, an asynchronous motor and an eddy-current brake are formed, and its adjusting device is made up of a set-point transducer 9, speed regulator 7, integrator 13, adjusting device 15 and braking controlling organization 29.Its control circuit complexity, components and parts be many, also have and to adopt dedicated devices; Debug loaded down with trivial detailsly, maintenance is difficult for, and costs an arm and a leg simultaneously.
The objective of the invention is to design a kind of reliable and stable, control circuit is succinct, and performance is good; Speed adjustable range is big, and momentary speed variation is little, has hard mechanical property, can make hoisting machinery keep constant speed, and antijamming capability is strong; Debugging is convenient, low-cost eddy-current brake speed-regulating control device.
It is that core constitutes that the electric wiring of alternating-eddy-current braking device speed-regulating control device mainly contains three integrated circuits, and a slice is the integrated circuit that comprises that speed combiner circuit, signal feedback circuit and synchronizing speed testing circuit are formed, and forms the amplifier controller; Another sheet is a modulating pulse generation circuit, and the 3rd is that these two integrated circuits of control triggering electric circuit are formed speed regulator.Device is according to the requirement of crane speed ratio, design provides the reference voltage of corresponding each gear speed (step speed change), by the set-point circuit sending signal, with motor actual output current or speed measuring motor output voltage signal through signal feedback circuit, be input to the speed combiner circuit together, reference signal and feedback signal are compared paraphase, provide error voltage, and amplify, the speed-regulating pulse generation circuit of admission velocity controller then, produce adjustable modulating pulse row, trigger living pulse through the control triggering electric circuit phase shift, control phase-shifting voltages jointly with the controllable silicon master controller and change output, change thyristor operating angle, come the exciting current of controlled vortex flow brake, voltage, constitute a close loop control circuit, also can control motor and eddy-current brake through signal feedback circuit admission velocity controller master controller directly by speed measuring motor, constitute another close loop control circuit, realization speed is controlled automatically.
This device also designs synchronizing speed and detects the loop, voltage signal by speed measuring motor is input to the synchronizing speed testing circuit, when electromotor velocity reaches a certain set-point (as be set at synchronous speed 90%), output signal is passed through speed control, the external relay of control motor, the whole rotor resistances of short circuit produce enough brake torques and prevent runaway speed.
Accompanying drawing 1 is control system figure of the present invention.1 is motor among the figure, and 2 is eddy-current brake, and 3 is speed measuring motor, and 4 is the set-point circuit, and 5 is the speed combiner circuit, and 6 is signal feedback circuit, and 7 is the synchronizing speed testing circuit, and 8 is speed regulator, and 9 is master controller, P
1Be amplifier controller, P
2Be modulating pulse generation circuit, P
3Be control triggering electric circuit.
In conjunction with the accompanying drawings the present invention is elaborated.
The Velocity Reference voltage signal that is provided by set-point circuit 4 is with being input to speed combiner circuit 5 through the current signal of the motor 1 of signal feedback circuit 6 or the voltage signal of speed measuring motor 3, and speed combiner circuit 5 is made up of inverter, adder, integral amplifier, voltage follow comparator.With Velocity Reference voltage signal and feedback signal compare, paraphase, provide error voltage.Subsequently, this signal admission velocity adjuster 8, speed regulator 8 is made up of two integrated circuits, and a slice is modulating pulse generation circuit P
2, modulation produces the modulating pulse row of 5-10 KHz EDM Generator of Adjustable Duty Ratio, and pulse is a square wave, and another sheet is control triggering electric circuit P
3, modulation long pulse phase shift triggers control, its phase shift range 〉=170 °, and pulse front edge≤1 μ S, its negative pulse phase place is unbalanced≤and ± 3 °, load current 〉=150mA triggers with 180 °-α phase modulated long pulse.Master controller 9 adopts the modulation long pulse to trigger driving controllable silicon all-wave control circuit, and the control phase-shifting voltages changes output, and thyristor operating angle changes, and gets final product exciting current, the voltage of controlled vortex flow brake.When electromotor velocity increased, device circuit can increase exciting current automatically, thereby increased brake torque, otherwise reduced exciting current, reduced brake torque, and realization speed is controlled automatically, keeps crane speed stabilizing, constant speed.
This device is designed to two feedback closed loop controls, has speed ratio greater than 1: 10, and it is adjustable respectively to quicken, slow down, and can constitute level or stepless speed regulation, and the device speed adjustable range is big, and momentary speed variation is little, and gear shift is steady, has hard mechanical property, can guarantee speed stabilizing, constant speed.
Control circuit is that core constitutes by three integrated circuits, has simple in circuits, and reliable and stable, control performance is good, debugging, the advantage that maintenance is convenient, cost is low.
It is that 5-10KHz modulation long pulse phase shifting control triggers that circuits for triggering adopt modulating frequency, triggers polarity for just.It is wide that circuit has phase shift range, and the positive-negative half-cycle pulse is unbalanced little, output load current 150-800mA, and power supply power consumption is little, has strong anti-interference ability.
When phase-shift control circuit breaks down, circuit can be closed the output of modulation long pulse row automatically, thereby eddy-current brake exciting current voltage is reduced to zero, reliably close the main circuit controllable silicon, when avoiding general thyristor speed control device to break down, can produce and quicken preshoot, rock and burn out phenomenons such as device.
This device can also change from the motion tracking synchronizing speed, in case hypervelocity can be controlled automatically.
This device has widely versatility, can be used for lifting mechanism, the travelling mechanism of the crane of different tonnages, and rotation and jib lubbing mechanism also can be used for other mechanical speed adjusting gear.
Claims (6)
1, alternating-eddy-current braking device speed-regulating control device, it is made up of motor, eddy-current brake and two feedback control circuit, two feedback control circuits are made up of an amplifier controller, speed regulator and master controller, it is characterized in that the amplifier controller is the integrated circuit that a slice is made up of speed combiner circuit, signal feedback circuit and synchronizing speed testing circuit; Speed regulator is made up of modulating pulse generation circuit and two integrated circuits of control triggering electric circuit.
2, alternating-eddy-current braking device speed regulating device according to claim 1, the main control circuit that it is characterized in that two feedback control circuits are by set-point circuit 4, speed combiner circuit 5, signal feedback circuit 6, speed regulator 8, master controller 9, motor 1 and eddy-current brake 2 constitute a closed-loop control; By speed measuring motor 3, signal feedback circuit 6, speed combiner circuit 5, speed regulator 8, master controller 9, motor 1 and eddy-current brake 2 constitute another closed-loop control.
3, according to claim 1 and 2 described alternating-eddy-current braking device speed-regulating control devices, it is characterized in that speed regulator 8 is made up of two integrated circuits, wherein a slice is the modulating pulse generation circuit P of 5-10KHz EDM Generator of Adjustable Duty Ratio
2, another sheet is the control triggering electric circuit P of output modulation long pulse
3
4, according to claim 1 and 2 described alternating-eddy-current braking device speed-regulating control devices, it is characterized in that amplifier controller P
1In speed combiner circuit 5 form by inverter, adder, integral amplifier, voltage follow comparator.
5, according to claim 1 and 3 described alternating-eddy-current braking device speed-regulating control devices, it is characterized in that control triggering electric circuit P
3Be to trigger with 180 °-α phase modulated long pulse.
6, alternating-eddy-current braking device speed regulating device according to claim 1 is characterized in that synchronizing speed detection, control circuit 7 by speed measuring motor 3, synchronizing speed testing circuit 7, and speed regulator 8 and outer controlled relay, resistor and motor are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103478 CN1016030B (en) | 1989-05-18 | 1989-05-18 | Controller for alternating-eddy-current braking speed regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89103478 CN1016030B (en) | 1989-05-18 | 1989-05-18 | Controller for alternating-eddy-current braking speed regulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1047425A true CN1047425A (en) | 1990-11-28 |
| CN1016030B CN1016030B (en) | 1992-03-25 |
Family
ID=4855140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89103478 Expired CN1016030B (en) | 1989-05-18 | 1989-05-18 | Controller for alternating-eddy-current braking speed regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1016030B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274326A (en) * | 2013-06-08 | 2013-09-04 | 安徽广德昌立制动器有限公司 | Mute energy-saving alternating current controller |
| CN103701401A (en) * | 2013-12-30 | 2014-04-02 | 苏州汇川技术有限公司 | Control method, device and system for eddy current motor |
-
1989
- 1989-05-18 CN CN 89103478 patent/CN1016030B/en not_active Expired
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103274326A (en) * | 2013-06-08 | 2013-09-04 | 安徽广德昌立制动器有限公司 | Mute energy-saving alternating current controller |
| CN103274326B (en) * | 2013-06-08 | 2016-06-29 | 安徽广德昌立制动器有限公司 | A kind of mute energy-saving alternating-current controller |
| CN103701401A (en) * | 2013-12-30 | 2014-04-02 | 苏州汇川技术有限公司 | Control method, device and system for eddy current motor |
| CN103701401B (en) * | 2013-12-30 | 2017-01-18 | 苏州汇川技术有限公司 | Control method, device and system for eddy current motor |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1016030B (en) | 1992-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101304234B (en) | Power converters | |
| CA2418561C (en) | Variable speed wind turbine having a passive grid side rectifier with scalar power control and dependent pitch control | |
| US20130016537A1 (en) | Method for controlling a frequency converter and frequency converter | |
| US4656413A (en) | Stabilized control system and method for coupling an induction generator to AC power mains | |
| KR20030009484A (en) | Method of operating a wind power station and wind power station | |
| CN101022261A (en) | Ac motor system and method for controlling same, and related power conversion device | |
| EP1289117B1 (en) | Engine generator | |
| JPS62282169A (en) | Variable speed pumping equipment | |
| CN105429558A (en) | Tower crane luffing mechanism variable frequency speed regulation control system and control method | |
| CN202978810U (en) | Elevating mechanism based on double PWM variable-frequency double-fed motor | |
| CN201430498Y (en) | Marine inverter shaft generator | |
| CN1047425A (en) | Controller for alternating-eddy-current braking speed regulation | |
| CN205249113U (en) | Tower machine amplitude changing device variable frequency speed control system | |
| CN202713224U (en) | Crane special-purpose motor stator pressure regulation speed regulation controller | |
| US4235309A (en) | Control for starting electric motors | |
| JPS6216086A (en) | Tensile controller | |
| JPS61173699A (en) | Controller of variable speed water wheel generator | |
| JPH0634625B2 (en) | Variable speed turbine generator | |
| CN2539350Y (en) | AC voltage-regulating speed-regulating apparatus | |
| JPS60257790A (en) | Controller of ac elevator | |
| CN209389960U (en) | A kind of control panel | |
| JPS5912055A (en) | Controller for speed of alternating current elevator | |
| JPS63124797A (en) | Helper drive for turbine | |
| Gupta | Intelligent Induction Motor Drive | |
| RU2115213C1 (en) | Thyristor voltage changer for controlling induction motor speed |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |