CN203851070U - Synchronous motor apparatus and full-digital excitation device thereof - Google Patents
Synchronous motor apparatus and full-digital excitation device thereof Download PDFInfo
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- CN203851070U CN203851070U CN201420256293.5U CN201420256293U CN203851070U CN 203851070 U CN203851070 U CN 203851070U CN 201420256293 U CN201420256293 U CN 201420256293U CN 203851070 U CN203851070 U CN 203851070U
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Abstract
The utility model provides a synchronous motor full-digital excitation device comprising an excitation main power unit, a deexcitation and overvoltage protection unit, a main microcomputer excitation controller, a first power rectification unit and a cabinet. The deexcitation and overvoltage protection unit is connected with the excitation main power unit. The excitation main power unit comprises an alternating-current power source, an air switch, and excitation transformer and a synchronous transformer. The main microcomputer excitation controller comprises a CPU master control unit, a switch power unit, a switching value input/output unit, a relay output unit, a signal isolation sampling unit, an excitation put-into and pulse unit and a human-computer interface display unit. According to the utility model, the circuit structure can be greatly simplifies so as to improve the circuit stability and simplify the maintenance method.
Description
Technical field
The utility model relates to Electromechanical Control technical field, particularly a kind of synchronous motor equipment and full digital code excitation unit thereof.
Background technology
Synchronous motor excitation unit is the important part of synchronous motor.When synchronous motor work, in three phase windings of stator, pass into three-phase symmetrical electric current, the excitation winding of rotor passes into direct current.Pass into three-phase alternating current in stator three-phase symmetric winding time, will in air gap, produce rotating magnetic field.Pass into direct current in rotor field coil time, by stationary magnetic field constant polarization.If the magnetic pole logarithm of rotor field equates with the magnetic pole logarithm of stator field, rotor field is because being subject to the effect of stator field magnetic pull with stator rotating magnetic field synchronous rotary, and rotor is to be equal to speed, the direction rotation of rotating magnetic field.
But, the governor circuit of the excitation unit of existing synchronous motor adopts analog circuit to realize, therefore not only self there is the problem of circuit structure complexity, poor anti jamming capability, poor stability in governor circuit, and the excitation unit of existing synchronous motor also lacks the functions such as digital control and figure demonstration, cannot meet the requirement of enterprise to excitation unit functional diversity.
Utility model content
The purpose of this utility model is intended at least solve one of described technological deficiency.
For this reason, an object of the present utility model is to propose a kind of synchronous motor full digital code excitation unit, and this device has advantages of that circuit structure is simple, stability is high, antijamming capability is strong.
To achieve these goals, the utility model embodiment on the one hand provides a kind of synchronous motor full digital code excitation unit to put, comprise: excitation main power source unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit and cabinet, described demagnetization is connected described excitation main power source unit with overvoltage protective unit, described excitation main power source unit comprises: AC power, air switch, excitation transformer and synchrotrans, wherein, described AC power is connected with one end of described air switch, the other end of described air switch is connected with the elementary of described excitation transformer, the secondary output power supply of described excitation transformer, secondary and the described first power rectification unit of described excitation transformer is connected, one end of described synchrotrans is connected with described the first power rectification unit, the other end of described synchrotrans is connected with described host microcomputer excitation controller, described host microcomputer excitation controller comprises: CPU main control unit, switching power supply, switching value input-output unit, relay output unit, signal isolation sampling unit, throwing is encouraged and pulse unit and man-machine interface display unit, wherein, described CPU main control unit adopts Digital Signal Processing dsp chip, the input of described switching power supply is connected with described AC power, the output of described switching power supply and described CPU main control unit, switching value input-output unit, relay output unit, signal isolation sampling unit, throwing is encouraged with pulse unit and is connected with man-machine interface display unit, wherein, described switching power supply comprises: the first Switching Power Supply subelement and the second switch power supply subelement that operating voltage is provided that operating voltage is provided, described signal isolation sampling unit is connected that with electric electromechanics flow measuring apparatus, electric electromechanics pressure measuring device, described synchrotrans and described CPU main control unit motor voltage signal, motor current signal, exciting current signal and synchronous voltage signal are isolated to sampling, and described electric electromechanics flow measuring apparatus and described electric electromechanics pressure measuring device are connected to described synchronous motor, described switching value input-output unit is connected with described CPU main control unit with described the first Switching Power Supply subelement, described relay output unit is connected with described the first Switching Power Supply subelement respectively, and wherein said relay output unit includes signal lamp, described throwing is encouraged with pulse unit and is connected with described CPU main control unit with described the first Switching Power Supply subelement, described man-machine interface display unit is connected with described CPU main control unit, wherein, described the first power rectification unit is encouraged with pulse unit and is connected with overvoltage protective unit and excitation main power source unit with described demagnetization with described throwing respectively, and described synchrotrans, excitation transformer, excitation main power source unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit are positioned at described cabinet, and wherein said man-machine interface display unit is installed on the surface of described cabinet.
In another embodiment of the present utility model, described man-machine interface display unit comprises touch-screen.
In another embodiment of the present utility model, described CPU main control unit comprises random access memory ram, read-only memory ROM, Erarable Programmable Read only Memory EPROM, pulse shaping detection and switch unit, serial port and CPU board.
In an embodiment of the present utility model, described switching value input-output unit adopts optical coupler isolating type.
In another embodiment of the present utility model, also comprise: communication interface and network interface, wherein, the type of described communication interface and network interface is at least following one: USB interface, Ethernet interface, RS232 interface, RS485 interface/RS422 interface, high-speed field bus CANBUS, TCP/IP interface, MODEM interface.
In another embodiment of the present utility model, described the first power rectification unit comprises heat abstractor, and described heat abstractor comprises radiator and blower fan.
In an embodiment of the present utility model, also comprise: microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use is connected with described the first power rectification unit with described excitation main power source unit.
In another embodiment of the present utility model, also comprise: microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use is connected with described excitation main power source unit; The second power rectification unit, described the second power rectification unit is connected with described microcomputer excitation controller for subsequent use.
According to the synchronous motor full digital code excitation unit of the utility model embodiment, adopt the main control unit of Digital Signal Processing dsp chip as excitation unit, adopt digital control mode to realize relevant master control function, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And, the excitation unit of synchronous generator of the present utility model is by arranging man-machine interface display unit, superior man machine operation interface is provided, improve the convenience of user's operation, thereby improve the operation level of synchronous motor group, met enterprise and produce the more and more higher functional requirement that excitation unit is proposed.
The utility model also proposes a kind of synchronous motor equipment, comprise: the synchronous motor full digital code excitation unit that synchronous motor and the utility model above-described embodiment provide, signal isolation sampling unit and electric electromechanics flow measuring apparatus and the electric electromechanics pressure measuring device of synchronous motor full digital code excitation unit, electric electromechanics flow measuring apparatus and electric electromechanics pressure measuring device are connected to synchronous motor.
To achieve these goals, the utility model embodiment on the other hand provides synchronous motor equipment.
To achieve these goals, the utility model embodiment on the other hand provides a kind of synchronous motor equipment, comprising: synchronous motor; The synchronous motor full digital code excitation unit of the utility model above-described embodiment, signal isolation sampling unit and electric electromechanics flow measuring apparatus and the electric electromechanics pressure measuring device of described synchronous motor full digital code excitation unit, described electric electromechanics flow measuring apparatus and described electric electromechanics pressure measuring device are connected to described synchronous motor.
According to the synchronous motor equipment of the utility model embodiment, adopt the main control unit of Digital Signal Processing dsp chip as excitation unit, adopt digital control mode to realize relevant master control function, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And, the excitation unit of synchronous generator of the present utility model is by arranging man-machine interface display unit, superior man machine operation interface is provided, improve the convenience of user's operation, thereby improve the operation level of synchronous motor group, met enterprise and produce the more and more higher functional requirement that excitation unit is proposed.
The aspect that the utility model is additional and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 is according to the schematic diagram of the synchronous motor full digital code excitation unit of the utility model embodiment;
Fig. 2 is according to the structure chart of the host microcomputer excitation controller of the utility model embodiment;
Fig. 3 is according to the schematic appearance of the synchronous motor full digital code excitation unit of the utility model embodiment.
Embodiment
Describe embodiment of the present utility model below in detail, the example of embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has the element of identical or similar functions from start to finish.Be exemplary below by the embodiment being described with reference to the drawings, be intended to for explaining the utility model, and can not be interpreted as restriction of the present utility model.
In the utility model, unless otherwise clearly defined and limited, the terms such as term " installation ", " being connected ", " connection ", " fixing " should be interpreted broadly, and for example, can be to be fixedly connected with, and can be also to removably connect, or connect integratedly; Can be mechanical connection, can be also electrical connection; Can be to be directly connected, also can indirectly be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, can understand as the case may be the concrete meaning of above-mentioned term in the utility model.
The synchronous motor full digital code excitation unit that the utility model provides is a kind of electric regulation device of automation that exciting current is played to control and regulating action.The circuit structure of this device is simple, has higher stability, and the functions such as digital control and figure demonstration can be provided.
As shown in Figure 1, the synchronous motor full digital code excitation unit of the utility model embodiment, comprising: excitation main power source unit B 3, demagnetization and overvoltage protective unit, host microcomputer excitation controller AEC, the first power rectification list B4 unit and cabinet.Wherein, demagnetization is connected excitation main power source unit B 3 with overvoltage protective unit.
Excitation main power source unit B 3 comprises: AC power, air switch QF, excitation transformer SZG and synchrotrans K3, wherein, AC power provides 380V alternating current.AC power is connected with one end of air switch QF, the other end of air switch QF is connected with the elementary of excitation transformer SZG, the secondary output power supply of excitation transformer SZG, the secondary of excitation transformer SZG is connected with the first power rectification unit B 4 by fast acting fuse (FUA-FUC), one end of synchrotrans K3 is connected with the first power rectification unit B 4, and the other end of synchrotrans K3 is connected with host microcomputer excitation controller AEC.Wherein, on the list of three fast acting fuses, be connected with respectively pressure-sensitive protected location YMA, pressure-sensitive protected location YMB and pressure-sensitive protected location YMC.
As shown in Figure 2, host microcomputer excitation controller AEC comprises: CPU main control unit B1, switching power supply B2, switching value input-output unit B5, relay output unit B6, signal isolation sampling unit B9, throwing are encouraged and pulse unit B8 and man-machine interface display unit B7.
CPU main control unit B1 comprises: random access memory ram, read-only memory ROM, Erarable Programmable Read only Memory EPROM, F28335, pulse shaping, detection and switch unit, serial port and CPU board (motherboard).Wherein, CPU main control unit B1 can adopt Digital Signal Processing dsp chip.Wherein, CPU main control unit B1 adopts up-to-date high speed 32 bit DSPs 28335 as core, maximum speed can reach 150MHz, the accurate numberization that powerful data-handling capacity and fast Floating-point Computation are field regulator model and the realization of other miscellaneous function of excitation unit provide guarantee, it is the kernel control chip of whole excitation unit, and data processing speed and precision improve greatly.
Master control borad of the present utility model (CPU board) adopts surface label technique, multilayer board, and army's grade chip, important chip all adopts the matured product of domestic and international esbablished corporation.
And, CPU main control unit B1 adopts real-time multi-task operating system RTOS and powerful experts database function thereof, the programming style of oriented mission, carry out the work such as resource management, task scheduling, abnormality processing by all-round excellent first method of service, work very reliable, also make the performance of excitation unit be able to maximum performance.CPU main control unit B1 adopts the programmings such as C language, command list (IL), Basic, structure text (ST), SFC (SFC), data module editing machine, data type editing machine, execution speed is fast, readable good, be easy to expansion and transplant.
Specifically, the input of switching power supply B2 is connected with AC power, and the output of switching power supply B2 is encouraged with pulse unit B8 and is connected with man-machine interface display unit B7 with CPU main control unit B1, switching value input-output unit B5, relay output unit B6, signal isolation sampling unit B9, throwing.Wherein, switching power supply B2 comprises: the first Switching Power Supply subelement B21 and the second switch power supply subelement B22 that operating voltage is provided that operating voltage is provided.In an example of the present utility model, operating power is two-way 24V operating voltage, operating voltage is+5V ,+12V and-operating voltage of 12V.
It should be noted that, the excitation unit power acquisition of synchronous motor of the present utility model, with supplying power with double circuit, is come certainly in direct-flow storage battery power supply, and another road becomes or station-service alternating current step-down rectifier from machine end.The parallel running of two-way power supply, redundancy each other, has improved the reliability of installing.
The single B9 of signal isolation sampling unit is connected that with electric electromechanics flow measuring apparatus CT, electric electromechanics pressure measuring device PT, synchrotrans K3, CPU main control unit B1 motor voltage signal, motor current signal, exciting current signal and synchronous voltage signal are isolated to sampling, and electric electromechanics flow measuring apparatus and electric electromechanics pressure measuring device are connected to synchronous motor M.
Particularly, electric electromechanics flow measuring apparatus CT, electric electromechanics pressure measuring device PT are adapted for the weak electric signal in A/D range after the voltage transformer of the employing miniaturizations such as the motor measurement voltage signal measuring, instrument voltage signal, system voltage signal, synchronous voltage signal, motor voltage signal, motor current signal, exciting current signal can being isolated.Particularly, the signal that stator current instrument transformer is come, after the isolation of internal current instrument transformer, is adapted for the weak electric signal in A/D range.Exciting current is sampled after level conversion after filtering.Synchronizing signal is shaped as to square wave, for CPU main control unit, B1 produces pulse simultaneously.
Switching value input-output unit B5 is connected with CPU main control unit B1 with the first Switching Power Supply subelement B21.In an embodiment of the present utility model, switching value input-output unit B5 adopts optical coupler isolating type.Wherein, switching value input-output unit B5 is made up of relay.Switching value input-output unit B5 after photoelectricity isolation, enters 24 way switch amount input signals observing and controlling CPU main control unit B1 and carries out state judgement.
Further, switching value input-output unit B5 comprises power sense circuit, and wherein, power sense circuit is connected with the first Switching Power Supply subelement B21.24 way switch amount output signals, through photoelectricity isolation rear drive relay output unit B6, are carried out to signal output.
Relay output unit B6 is connected with the first Switching Power Supply subelement B21 respectively, and wherein, relay output unit B6 includes signal lamp, display output state.
Throwing is encouraged with pulse unit B8 and is connected with CPU main control unit B1 with the first Switching Power Supply subelement B21.The utility model adopts accurate angle to encourage along polarity zero passage automatic switching, encourages by force synchronizing, and synchronous motor starts steadily, rapid, nothing impact.In the time of motor desynchronizing, can be not shutting down, not automatic out-of-step or tripping grinder off-load in the situation that, can support the use with out-of-synchronism protection device (DSBW), realize power-off step-out synchronizing function again.
In an embodiment of the present utility model, the utility model adopts two kinds of excitation types:
(1) slippage is thrown and is encouraged: in the time of electric motor starting, measure frequency or the cycle (corresponding with rotating speed size) of rotor induced voltage, when reaching, throws while encouraging rotating speed motor speed, adopt along polarity and throw the principle of encouraging, in the time that the best input angle of departure of pull-in step δ ≈ 0 spends, carry out synchronizing throwing and encourage, improved the load capacity of motor synchronizing and synchronizing again and the degree of reliability of pull-in step process;
(2) timing is thrown and is encouraged: in the time of electric motor starting, measure frequency or the cycle (corresponding with rotating speed size) of rotor induced voltage, in the time that motor speed reaches set point, starting timing is thrown and is encouraged link, encourages when timing time then carries out automatic switching.
Man-machine interface display unit B7 is connected with CPU main control unit B1.Wherein, man-machine interface display unit B7 is installed on the surface of cabinet.And man-machine interface display unit includes touch-screen.This touch-screen can provide instrument monitoring and control operation panel for human-computer dialogue.Man-machine interface adopts the full-localized interface of touch-screen, is convenient to operations staff's supervision.The real-time condition display of switching value input, switching value force the function such as switching, the extraction of fault recorder data of output, control and protection setting parameter, operational mode all can on this man-machine dialog box, realize in addition.
In an example of the present utility model, man-machine interface display unit B7 adopts 15 cun high Islamic colour display screens to show device, is using function, the aspects such as the friendly of operation and the advance of technology, for other excitation unit of domestic market, there is better operating effect.
Fig. 3 is the profile schematic diagram of the utility model synchronous motor full digital code excitation unit, and as shown in Figure 3, man-machine interface display unit B7 and CPU main control unit B1 are combined into one, and are embedded on the front panel of excitation unit, are convenient to maintenance and operation.Cabinet Qianmen adopts overall toughened glass, elegant in appearance.
The external logic loop of the excitation unit of synchronous motor of the present utility model is mainly to complete the isolation of external switch amount signal and the expansion of node with several direct currents 220V relay, the contact point signal coming from scene is all isolated through direct current 220V relay, because the general transmitting range of these signals is far away, and be mixed in forceful electric power cable trough, direct current 220V operation is conducive to improve antijamming capability.Relay node after isolation through light every after read in CPU main control unit B3, switching value is through electromagnetism and photoelectricity dual resisteance, and ensures that cabinet is all forceful electric power interfaces outward, in cabinet, 24V power supply is not drawn cabinet, thereby guarantee reliability.
And; the first power rectification unit B 4 is encouraged with pulse unit B8, demagnetization and overvoltage protective unit, excitation main power source unit and is connected with throwing respectively, and synchrotrans, excitation transformer, excitation main power source unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit are positioned at cabinet.Wherein, the first power rectification unit comprises heat abstractor, and wherein heat abstractor comprises radiator and blower fan.Utilize radiator to add fan radiating, operation noise is little, easy to maintenance, can greatly improve the structure of excitation unit and utilize space.
Synchronous motor full digital code excitation unit of the present utility model also comprises: communication interface and network interface, wherein, the type of communication interface and network interface is at least following one: USB interface, Ethernet interface, RS232 interface, RS485 interface/RS422 interface, high-speed field bus CANBUS, TCP/IP interface, MODEM interface.By adopting above-mentioned very open communication interface and network interface, can be easily and miscellaneous equipment or net connection, realize automation, the informationization of equipment control, management.
In an embodiment of the present utility model, the excitation unit of synchronous motor of the present utility model configures powerful oscillograph function.Concrete function is as follows:
(1) can record trouble 80 Miao 16 road analog measurement data and 16 way switch amount states after first 20 seconds and fault.
(2) can arbitrary disposition fault surrounding time in record ripple duration, every cycle sampling resolution can be set and show resolution and time period, every cycle sampling resolution can reach every 20ms 144 points of sampling.
(3) amount of range record comprises: motor voltage UG1, UG2, motor current IA, Trigger Angle ARF, active-power P, reactive power Q, rotor voltage Ufd, rotor current Ifd, motor frequency F0, substantially contain all analog quantitys, can upload on notebook computer by serial ports and show, process.
(4) can carry out easily waveform storage, analysis and printing.
(5) Starting mode manually boots, and Sudden Changing Rate starts and three kinds of modes of fault initiating automatically, the variation waveform of the each physical quantity can record electric motor starting and operation time.
(6) can online modification multiplication factor, derivative time constant, inertia time constant, carry out switching value transmission test, cross and encourage restriction, underexcitation restriction, step response test, demagnetization experiment and axes experimental, all such modifications and experiment all only need be by the touch screen operations on controller, without reconfiguration line, very convenient.
In conjunction with the description of the above-mentioned structure to all parts, below the operation principle of synchronous motor full digital code excitation unit of the present utility model is described.
First, the alternating voltage 220V that system outside is provided and direct voltage 110 or 220V double loop power supply are sent in excitation unit, are transformed into the required operating voltage of CPU main control unit B1 through switching power supply B2.The PT signal of motor (motor voltage signal) and CT signal (motor current signal) are sent in excitation unit, through signal isolation sampling unit B9 isolate with shaping after send CPU main control unit B1 to.Signal isolation sampling unit B9 gathers current exciting voltage and exciting current value is sent into CPU main control unit B1 after direct current sampling section is finished dealing with.By control operation panel, input signal is sent into after light-coupled isolation to CPU main control unit B1, and the control output signal of CPU main control unit B1 generation is delivered to relay output unit B6 after light-coupled isolation, control each by control object with this.CPU main control unit B1 is by the measurement to synchronous motor excitation voltage, exciting current, stator voltage, stator current, active power, reactive power, power factor, carry out computing by certain control law and control mode, calculate pilot angle α, and the trigger impulse that produces the phase shift of α angle controls corresponding controlled silicon conducting, obtain adjustable direct current output.Can show current all operational factors with man-machine interface display unit B7, and user also can pass through touch-screen online modification control parameter.
In an embodiment of the present utility model, synchronous motor full digital code excitation unit of the present utility model also comprises: microcomputer excitation controller BEC for subsequent use, wherein microcomputer excitation controller BEC for subsequent use is connected with the first power rectification unit B 4 with excitation main power source unit B 3.Wherein, the structure of host microcomputer excitation controller and microcomputer excitation controller for subsequent use is identical with work-based logic principle.
Such active/standby mode is while breaking down for fear of an excitation controller, excitation unit work paralysis.Host microcomputer excitation controller AEC and microcomputer excitation controller BEC for subsequent use devote oneself to work in the time that excitation unit moves.In the time that host microcomputer excitation controller AEC in service has fault, microcomputer excitation controller BEC for subsequent use automatically understands undisturbed and is switched to running status.Then host microcomputer excitation controller AEC report fault.Wherein, host microcomputer excitation controller AEC and microcomputer excitation controller BEC for subsequent use can share a first power rectification unit B 4.
In addition, host microcomputer excitation controller AEC and microcomputer excitation controller BEC for subsequent use also can utilize respectively a power rectification unit, and microcomputer excitation controller and power rectification unit form the mode of operation of 1 pair 1.
In another embodiment of the present utility model, synchronous motor full digital code excitation unit of the present utility model also comprises: microcomputer excitation controller for subsequent use and the second power rectification unit, wherein, microcomputer excitation controller for subsequent use is connected with excitation main power source unit, and the second power rectification unit is connected with microcomputer excitation controller for subsequent use.The pulse signal of host microcomputer excitation controller AEC output, after the Pulse Amplifier Unit of its inside amplifies for controlling the first power rectification unit.The pulse signal of microcomputer excitation controller BEC for subsequent use output, after the Pulse Amplifier Unit of its inside amplifies for controlling the second power rectification unit.
It should be noted that, the first and second power rectification unit all adopt modularized design, utilize radiator and fan radiating, and operation noise is little, easy to maintenance, and the structure that has greatly improved excitation unit is utilized space.
The synchronous motor full digital code excitation unit of the utility model embodiment, periphery is equipped with large-scale programmable logic device FPGA, CPLD as auxiliary element, control system is reduced into a SOC (system on a chip) substantially, has greatly improved the reliability of system, realize full AC Data.
According to the synchronous motor full digital code excitation unit of the utility model embodiment, adopt the main control unit of Digital Signal Processing dsp chip as excitation unit, adopt digital control mode to realize relevant master control function, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And, the excitation unit of synchronous generator of the present utility model is by arranging man-machine interface display unit, superior man machine operation interface is provided, improve the convenience of user's operation, thereby improve the operation level of synchronous motor group, met enterprise and produce the more and more higher functional requirement that excitation unit is proposed.
The utility model also proposes a kind of synchronous motor equipment, comprise: the synchronous motor full digital code excitation unit that synchronous motor and the utility model above-described embodiment provide, the signal isolation sampling unit of synchronous motor full digital code excitation unit is connected with electric electromechanics pressure measuring device with electric electromechanics flow measuring apparatus, and electric electromechanics flow measuring apparatus and electric electromechanics pressure measuring device are connected to synchronous motor.
According to the synchronous motor equipment of the utility model embodiment, adopt the main control unit of Digital Signal Processing dsp chip as excitation unit, adopt digital control mode to realize relevant master control function, utilize the feature such as the processing speed that dsp chip has and response is fast, centralization control, can improve response speed, computational speed, anti-electromagnetic interference and the reliability of excitation unit.Wherein, the utility model, by meticulous design, is reasonably processed the details of the aspects such as ground connection, filtering, shielding, makes the antijamming capability of excitation unit reach three grades of above standards of harsh grade.
And, adopt independent dsp chip as main control unit, greatly simplify circuit structure, and then improved the stability of circuit, simplify method for maintaining.And, the excitation unit of synchronous generator of the present utility model is by arranging man-machine interface display unit, superior man machine operation interface is provided, improve the convenience of user's operation, thereby improve the operation level of synchronous motor group, met enterprise and produce the more and more higher functional requirement that excitation unit is proposed.
In the description of this specification, the description of reference term " embodiment ", " some embodiment ", " example ", " concrete example " or " some examples " etc. means to be contained at least one embodiment of the present utility model or example in conjunction with specific features, structure, material or the feature of this embodiment or example description.In this manual, the schematic statement of above-mentioned term is not necessarily referred to identical embodiment or example.And specific features, structure, material or the feature of description can be with suitable mode combination in any one or more embodiment or example.
Although illustrated and described embodiment of the present utility model above, be understandable that, above-described embodiment is exemplary, can not be interpreted as restriction of the present utility model, those of ordinary skill in the art can change above-described embodiment in the situation that not departing from principle of the present utility model and aim in scope of the present utility model, amendment, replacement and modification.Scope of the present utility model is extremely equal to and limits by claims.
Claims (9)
1. a synchronous motor full digital code excitation unit; it is characterized in that; comprise: excitation main power source unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit and cabinet, described demagnetization is connected described excitation main power source unit with overvoltage protective unit
Described excitation main power source unit comprises: AC power, air switch, excitation transformer and synchrotrans, wherein, described AC power is connected with one end of described air switch, the other end of described air switch is connected with the elementary of described excitation transformer, the secondary output power supply of described excitation transformer, secondary and the described first power rectification unit of described excitation transformer is connected, one end of described synchrotrans is connected with described the first power rectification unit, and the other end of described synchrotrans is connected with described host microcomputer excitation controller;
Described host microcomputer excitation controller comprises: CPU main control unit, switching power supply, switching value input-output unit, relay output unit, signal isolation sampling unit, throwing are encouraged and pulse unit and man-machine interface display unit, wherein, described CPU main control unit adopts Digital Signal Processing dsp chip
The input of described switching power supply is connected with described AC power, the output of described switching power supply is encouraged with pulse unit and is connected with man-machine interface display unit with described CPU main control unit, switching value input-output unit, relay output unit, signal isolation sampling unit, throwing, wherein, described switching power supply comprises: the first Switching Power Supply subelement and the second switch power supply subelement that operating voltage is provided that operating voltage is provided;
Described signal isolation sampling unit is connected that with electric electromechanics flow measuring apparatus, electric electromechanics pressure measuring device, described synchrotrans and described CPU main control unit motor voltage signal, motor current signal, exciting current signal and synchronous voltage signal are isolated to sampling, and described electric electromechanics flow measuring apparatus and described electric electromechanics pressure measuring device are connected to described synchronous motor;
Described switching value input-output unit is connected with described CPU main control unit with described the first Switching Power Supply subelement;
Described relay output unit is connected with described the first Switching Power Supply subelement respectively, and wherein said relay output unit includes signal lamp;
Described throwing is encouraged with pulse unit and is connected with described CPU main control unit with described the first Switching Power Supply subelement;
Described man-machine interface display unit is connected with described CPU main control unit;
Wherein, described the first power rectification unit is encouraged with pulse unit and is connected with overvoltage protective unit and excitation main power source unit with described demagnetization with described throwing respectively; and described synchrotrans, excitation transformer, excitation main power source unit, demagnetization and overvoltage protective unit, host microcomputer excitation controller, the first power rectification unit are positioned at described cabinet, and wherein said man-machine interface display unit is installed on the surface of described cabinet.
2. synchronous motor full digital code excitation unit as claimed in claim 1, is characterized in that, described man-machine interface display unit comprises touch-screen.
3. synchronous motor full digital code excitation unit as claimed in claim 1, it is characterized in that, described CPU main control unit comprises random access memory ram, read-only memory ROM, Erarable Programmable Read only Memory EPROM, pulse shaping detection and switch unit, serial port and CPU board.
4. synchronous motor full digital code excitation unit as claimed in claim 1, is characterized in that, described switching value input-output unit adopts optical coupler isolating type.
5. synchronous motor full digital code excitation unit as claimed in claim 1, it is characterized in that, also comprise: communication interface and network interface, wherein, the type of described communication interface and network interface is at least following one: USB interface, Ethernet interface, RS232 interface, RS485 interface/RS422 interface, high-speed field bus CANBUS, TCP/IP interface, MODEM interface.
6. synchronous motor full digital code excitation unit as claimed in claim 1, is characterized in that, described the first power rectification unit comprises heat abstractor, and described heat abstractor comprises radiator and blower fan.
7. synchronous motor full digital code excitation unit as claimed in claim 1, is characterized in that, also comprises: microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use is connected with described the first power rectification unit with described excitation main power source unit.
8. synchronous motor full digital code excitation unit as claimed in claim 1, is characterized in that, also comprises:
Microcomputer excitation controller for subsequent use, described microcomputer excitation controller for subsequent use is connected with described excitation main power source unit;
The second power rectification unit, described the second power rectification unit is connected with described microcomputer excitation controller for subsequent use.
9. a synchronous motor equipment, is characterized in that, comprising:
Synchronous motor;
Synchronous motor full digital code excitation unit described in claim 1-8 any one, the signal isolation sampling unit of described synchronous motor full digital code excitation unit is connected with electric electromechanics pressure measuring device with electric electromechanics flow measuring apparatus, and described electric electromechanics flow measuring apparatus and described electric electromechanics pressure measuring device are connected to described synchronous motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420256293.5U CN203851070U (en) | 2014-05-19 | 2014-05-19 | Synchronous motor apparatus and full-digital excitation device thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420256293.5U CN203851070U (en) | 2014-05-19 | 2014-05-19 | Synchronous motor apparatus and full-digital excitation device thereof |
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| CN203851070U true CN203851070U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420256293.5U Expired - Lifetime CN203851070U (en) | 2014-05-19 | 2014-05-19 | Synchronous motor apparatus and full-digital excitation device thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871177A (en) * | 2016-03-30 | 2016-08-17 | 夏士桀 | Shielding power adjustment platform |
| CN110661437A (en) * | 2019-10-12 | 2020-01-07 | 林敦 | Excitation rectification complete device in modular mode and production method |
-
2014
- 2014-05-19 CN CN201420256293.5U patent/CN203851070U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105871177A (en) * | 2016-03-30 | 2016-08-17 | 夏士桀 | Shielding power adjustment platform |
| CN110661437A (en) * | 2019-10-12 | 2020-01-07 | 林敦 | Excitation rectification complete device in modular mode and production method |
| CN110661437B (en) * | 2019-10-12 | 2020-12-15 | 林敦 | Excitation rectification complete device in modular mode and production method |
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