CN2541998Y - Four-quad cascade control d.c. magnetizer - Google Patents
Four-quad cascade control d.c. magnetizer Download PDFInfo
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- CN2541998Y CN2541998Y CN 02208576 CN02208576U CN2541998Y CN 2541998 Y CN2541998 Y CN 2541998Y CN 02208576 CN02208576 CN 02208576 CN 02208576 U CN02208576 U CN 02208576U CN 2541998 Y CN2541998 Y CN 2541998Y
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- parallel circuit
- current
- speed
- motor
- organic
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Abstract
The utility model relates to a four-quadrant cascade speed-regulating direct-current excitation device, and a direct-current excitation shunt is provided with a controlled silicon rectifier, a trigger unit, a stator winding of an input connecting coiling motor of a changing-over logic unit HL to be used as the excitation, and the ZC and the FC can be used to change the phase sequence for achieving the optimal vector control.
Description
The utility model relates to a kind of four-quadrant tandem control dc magnetizing device.
In the electromechanical equipment of mine, the automatically controlled speed control device for Wound-rotor type step motor roughly can reduce two kinds at present, and wherein a kind of is to carry out speed governing at rotor loop serial connection additional resistance, and its electric energy loss is big, and it is level and smooth that speed governing is owed.Another kind is conventional tandem control, and it is difficult to realize the interior speed governing operation of four-quadrant scope of motor again.In order to solve this technical problem, the somebody works out a kind of energy four quadrant running winding asynchronous motor cascade speed regulator.It is that selection speed, current double closed-loop circuit are controlled, and utilizes the detection of crossing pulverised and zero current of speed static difference Δ n to control the contactor of motor stator winding jointly, realize changing automatically torque and rotating speed and can be in the four-quadrant scope speed governing operation.Operation under normal circumstances, it can obtain better technical effect.Yet for alternating current motor, when switching, stator winding then will induce two times back electromotive force on the rotor winding, the capacity that certainly will will the changes persuing depressor should double, the voltage peak that the rotor winding bears is also too high slightly, so still need do further improvement to it.
The purpose of this utility model provides a kind of speed efficiency height, stepless level and smooth, can in the four-quadrant scope, carry out automatic rotor and switch, torque automatic reverse, motor rotor voltage did not have the four-quadrant tandem control dc magnetizing device of peak value.
Concrete structure of the present utility model is provided by following embodiment and accompanying drawing thereof.
Accompanying drawing is the electrical schematic diagram of four-quadrant tandem control dc magnetizing device.
Describe the details and the working condition of the concrete device that the utility model proposes in detail below in conjunction with accompanying drawing.
This device comprises that speed closed loop parallel circuit, current closed-loop parallel circuit, energy back circuit, commutation parallel circuit and dc magnetizing parallel circuit carry out organic connection, and the electric elements of will being correlated with are installed in the bin to be formed.
Select two closed loop parallel circuits of conventional tandem control to control, be about to speed regulator ST, the tachogenerator ZCF of motor M rotor, active power filtering unit, the organic speed closed loop parallel circuit that is unified into to outer shroud of velocity setting integrator GJ, the velocity setting signal is undertaken comparing with velocity feedback quantity n behind the S shape integration by velocity setting integrator GJ by the active power filtering unit, obtains speed static difference Δ n.Current regulator LT, power pack, current transformer, the organic current closed-loop parallel circuit that is coupled to as interior ring of trigger equipment CF, silicon controlled rectifier cabinet SCR1 and SCR2 (comprising the diode three-phase rectifier), the organic energy back parallel circuit that is coupled to of transformer BY.By the input of current regulator LT, the current closed-loop formed of the current feedback signal of sending here with power pack then can be controlled the size and the energy back electrical network at thyristor inversion angle again.The commutation parallel circuit is to be core with commutation logic unit HL, an input pin connects the speed closed loop parallel circuit, another input pin connects the current closed-loop parallel circuit, and its output ZC and rotor positive connect, another end pin FC and the anti-phase connection of rotor, the rotating of control winding motors.
Working condition, one of commutation logic unit HL input picking rate static difference Δ n cross pulverised (promptly by on the occasion of become negative value or by negative value become on the occasion of), another input is that the electric current input detects zero current signal, also has an input to detect at that time speed.When if motor M starts, speed static difference Δ n＞0, then forward ZC has output to present the positive phase sequence operation.Speed static difference Δ n＜0, then negative sense FC has output to present the negative-phase sequence operation.The opposite each other operation with FC of ZC has realized the automatic reverse of motor torque.
The utility model provides a kind of magnetizer of DC motor formula, as coiling electric motor torque control power set, is characterized in: the speed efficiency height, stepless level and smooth, the low cruise mechanical property is harder, can carry out automatic rotor and switch in the four-quadrant scope.The torque automatic reverse, rotor voltage did not have peak value, and control panel is simple, is easy to make, and is easy to maintenance, can satisfy fully to utilize under the conventional transformer condition to help realizing digitlization, automation control, enlarged the range of application of motor.
Claims (1)
1, a kind of four-quadrant tandem control dc magnetizing device, it is characterized in that by speed regulator ST, the tachogenerator ZCF of motor M rotor, the active power filtering unit, the organic closed loop parallel circuit that is unified into to outer shroud of velocity setting integrator GJ, current regulator LT, power pack, current transformer, the organic current closed-loop parallel circuit that is coupled to as interior ring of trigger equipment CF, silicon controlled rectifier cabinet SCR1 and SCR2 (comprising the diode three-phase rectifier), the organic energy back parallel circuit that is coupled to of transformer BY, with commutation logic unit HL is core, an one input pin connects the speed closed loop parallel circuit, another input pin connects the current closed-loop parallel circuit, an output pin ZC and instruction motor M rotor winding positive connects the anti-phase connection of another output pin FC and instruction motor M rotor winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208576 CN2541998Y (en) | 2002-03-29 | 2002-03-29 | Four-quad cascade control d.c. magnetizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02208576 CN2541998Y (en) | 2002-03-29 | 2002-03-29 | Four-quad cascade control d.c. magnetizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2541998Y true CN2541998Y (en) | 2003-03-26 |
Family
ID=33689220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02208576 Expired - Fee Related CN2541998Y (en) | 2002-03-29 | 2002-03-29 | Four-quad cascade control d.c. magnetizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2541998Y (en) |
-
2002
- 2002-03-29 CN CN 02208576 patent/CN2541998Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |