CN101123415A - Middle voltage electromotor cutting wave dual DSP digital speed adjusting system for IGBT reverser - Google Patents
Middle voltage electromotor cutting wave dual DSP digital speed adjusting system for IGBT reverser Download PDFInfo
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- CN101123415A CN101123415A CNA2007101225731A CN200710122573A CN101123415A CN 101123415 A CN101123415 A CN 101123415A CN A2007101225731 A CNA2007101225731 A CN A2007101225731A CN 200710122573 A CN200710122573 A CN 200710122573A CN 101123415 A CN101123415 A CN 101123415A
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Abstract
A chopping double-DSP digital speed governing system of a medium voltage motor having an IGBT inverter comprises an uncontrollable rectifier, a boosting chopper and an IGBT inverter. The boosting chopper and the IGBT inverter are controlled through two internal ring current controllers. The speed of an external ring of the speed governing system and the voltage of an external ring of the inverter are controlled through two DSPs. The speed governing system and a motor system are controlled in a programmable way through a programmable controller. The system is applicable for ordinary wound asynchronous motors, internal feedback wound asynchronous motors, wound-cage brushless doubly-fed motors and wound-cage internal feedback brushless motors, and eliminates the problem of damaging equipments because of inversion resulting from grid failure out and out. The invention is highly reliable, is simple and convenient to be used, has excellent man-machine interface, can achieve remote monitoring and management, is highly digitalized, saves energy and is environmentally protective; the control error is small; the means of communication is flexible; and the cost is low.
Description
Technical field
The present invention relates to ac motor speed control control technology field, particularly a kind of IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system.
Background technology
The mesohigh motor is widely used in dragging of blower fan and water pump, if can utilize speed governing to realize that air quantity and hydraulic pressure regulates, then can save a large amount of electric energy, so market is very vigorous to the demand of the moderate mesohigh governing system of function admirable, cost.With DSP, single-chip microcomputer etc. is the popularization and application of digital control chip and the promoting the use of of Fuzzy Logic in Intelligent control strategy of representative, for the digital intelligent chemical control system of middle pressure AC asynchronous motor speed governing lays the foundation.
Zhong the ac motor speed control control system ， Now have high-power (＞press that (3～10KV) AC asynchronous motor governing systems mainly are divided into stator side frequency control and rotor-side tandem control two big classes, and all there is weak point separately in they in 200KW).
The stator side frequency control is regulated rotating speed at motor stator side joint medium voltage frequency converter by changing stator voltage and frequency.The medium voltage frequency converter capacity is big, is motor rated power P
NAbout 1.2 times, the voltage of transformation height needs many power electronic device series connection, system is huge, complicated, valency is high, reliability is influenced.
In traditional rotor-side cascade adjustable-speed system, uncontrollable rectifier of rotor side joint and thyristor inverter change rotor voltage ， Shi Now speed governing by changing inverter triggering phase shifting angle.Rotor voltage is low, and (generally＜1000V), blower fan and load of the pumps require speed adjustable range little (general 40～50%), the governing system low pressure (little (0.4～0.5P of＜500V) converting electric power, and capacity in addition
N), avoided the difficulty of middle pressure speed governing.Its major defect is, the phase shifting control of inverter causes the operate power factor low, and harmonic wave is big.
Develop the chopped mode cascade adjustable-speed system in recent years, the rotor side also is to connect uncontrollable rectifier and thyristor inverter, but between rectifier and inverter, add the first class boost chopper, it is constant that the triggering phase shift advance angle β of thyristor inverter is fixed on minimum value (about 30 °) during work, dc inversion voltage is fixed, recently change rotor voltage by the duty that changes chopper, realize speed governing.Compare with traditional tandem control, the chopped mode tandem control is regulated piezoelectricity machine rotating speed in the total power with the low voltage control equipment of smaller power, and power factor improves, and harmonic wave reduces.If motor load is the quadratic form load of blower fan and pump class, the inverter capacity also can further reduce to (0.2～0.3P
N) still, still there are two problems by the chopped mode cascade adjustable-speed system that uses Fa Now ， Now to have:
● at electric network fault, supply power voltage reduces suddenly or Xiao Shi Time significantly, and thyristor inverter is overturned inversion, damage equipment;
● in speed closed loop control, the control of boost chopper is made of speed outer shroud and current inner loop two parts, because the boost chopper control characteristic is non-linear, makes that the response of current inner loop is different under different rotating speeds, and the current regulator parameter adjustment is very difficult.
In order to overcome the above-mentioned defective of tandem control, up-to-date rotor frequency conversion speed-adjusting system adopts the Current limited Control pulse of current peak two point form, the switching tube of control boost chopper, duty ratio is regulated in requirement according to speed governing, thereby change dc inversion voltage, overcome the nonlinear problem of boost chopper control characteristic; Utilize the turn-off capacity of insulated door based transistor, the inversion stalling protection that cut off its direct current main circuit ， Shi Now when the thyristor inverter inversion is overturned, Xie Jue Now have thyristor inverter that system the exists problem at electrical network Gu Zhang Time damage equipment.
But find in using, be provided with stalling protection and bring some new problems again: overturn when cutting off its direct current main circuit in thyristor inverter generation inversion, can cause the instantaneous open circuit of rotor loop and produce high pressure, overvoltage crowbar must be set; Overvoltage crowbar action rapidity requirement is very high, otherwise boost chopper at first damages.The result has increased system complexity, and reliability reduces, and has influenced chopped mode tandem control broad application.
Summary of the invention
The objective of the invention is to overcome the above-mentioned defective of chopped mode tandem control of band stalling protection, provide a kind of and do not produce that inversion is overturned, easy to use, middle voltage electromotor chopped mode digital intelligent speed-adjusting and control system that digitized degree is high and with low cost.
The present invention's middle voltage electromotor chopped mode dual DSP digital intelligent speed-regulating control system of IGBT inverter, comprise electric motor system and governing system, described governing system comprises the uncontrollable rectifier that connects successively, the overvoltage protection controller, boost chopper, inverter and contravariant transformer, wherein: described inverter adopts complete controlled insulated door double-pole switch pipe IGBT inverter, between described uncontrollable rectifier and boost chopper, be connected to the first current/voltage acquisition system, the output of the described first current/voltage acquisition system is connected circular current controller in first digital signal processor and connected first with described overvoltage protection controller, the PWM of circular current controller output connects the input of described chopper in described first digital signal processor and connected first, between described boost chopper and inverter, be connected to the second current/voltage acquisition system, the output of the described second current/voltage acquisition system connects circular current controller in second digital signal processor and connected second, the PWM of circular current controller output connects the input of described inverter in described second digital signal processor and connected second, described first digital signal processor also connects overheated detection of overcurrent-overvoltage and the programmable controller in the described governing system, described Programmable Logic Controller connects described electric motor system and governing system, and described first digital signal processor and second digital signal processor are interconnected; Described first digital signal processor and the first coupled interior circular current controller are implemented the interior circular current of described boost chopper is controlled, described first digital signal processor is implemented the outer shroud speed control to governing system, and by the program control of described programmable controller enforcement to governing system and electric motor system, described second digital signal processor and coupled interior circular current controller are implemented the interior circular current of described inverter is controlled, described second digital signal processor is implemented the voltage of described inverter is controlled, and the steps include:
(1) after the speed system start powered on, second digital signal processor started initialization subroutine self is carried out initialization, makes control system be in the preparation state;
(2) screen displaying is started working, and the user can input operation information;
(3) system program is transferred the parameter input subroutine, input technology type, technological parameter etc., and system is by integrated treatment decision inverter voltage set-point;
(4) obtain signal from second digital signal processor and judge whether governing system is in normal operating conditions, the normal continuation; If the undesired step 16 that then skips to;
(5) after entering the speed governing state, interior circular current control and the work of outer shroud voltage control system, sensor acquisition electric current, the magnitude of voltage of current/voltage acquisition system UIM2;
(6) feedback voltage value and given magnitude of voltage are compared, obtain their difference;
(7) transfer fuzzy adjuster AVR;
(8) provide the current value of inverter by current regulator ACR;
(9) feedback current value and given current value are compared, obtain their difference;
(10) transfer fuzzy current regulator ACR;
(11) provide the PWM width-modulation pulse of inverter;
(12) keep inverter output voltage constant;
(13) inverter TI feedback power;
(14) see inversion circuit whether exist overcurrent, overvoltage, etc. fault, then do not skip to step 5 if having; Continue if having then;
(15) inverter overcurrent, overvoltage are protected;
(16) system protection changes non-speed governing state over to.
IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, wherein the second interior circular current controller comprises linear amplifier, D/A converter, down counter, comparator and output trigger; Lime sensor acquisition dc inversion voltage and current in the second electric current and voltage acquisition system; Described second digital signal processor provide clock, fuzzy/pid control algorithm is given, the minimum service time of IGBT inverter and minimum turn-off time, carry out the electric current of control inverter after the logical operation by circular current controller in the described inverter according to acquired signal, carry out the voltage of control inverter after the logical operation by described inverter outer shroud voltage controller, and remain a constant, to satisfy of the requirement of boost chopper formula governing system to inverter.
IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, wherein said first digital signal processor stores input-output subprogram, can realize man-machine interaction by interfaces such as touch-screens, the setting, controller type of carrying out technological parameter selected, the preservation of technological parameter and revise some operations.
Tool IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, wherein said first digital signal processor stores to be handled described governing system overcurrent, overvoltage, overheated, open-phase fault and inversion and overturns fault, and the warning subprogram of described electric motor system and environment corollary equipment fault.
IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, wherein said first digital signal processor stores the telemanagement subprogram, by RS232/RS485 communication interface and/or CAN fieldbus and/or the computer-implemented telemanagement of IP interface and Surveillance center, described Surveillance center computer directly carries out remote monitoring to the state of described governing system.
IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, wherein said first digital signal processor replaces with single-chip microcomputer.
IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system provided by the invention, its beneficial technical effects is: when keeping the existing and up-to-date whole advantages of chopped mode cascade adjustable-speed system, adopt the IGBT inverter, the problem that it does not exist inversion to overturn, thoroughly Xie Jue Now has the difficult problem of the thyristor inverter of system's existence at electrical network Gu Zhang Time damage equipment, system is simple, and is easy to use and reliable.Owing to adopt two DSP, the control of copped wave control and inverter is independently carried out, avoided the interference and the coupling of control, improve reliability widely.
Description of drawings
Fig. 1 is the circuit diagram one (being used for pressing the conventional wound asynchronous motor) of IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention;
Fig. 2 is the main circuit diagram of IGBT inverter in the governing system of the present invention;
Fig. 3 is the double-layer structure figure of IGBT inverter digital intelligent hardware control system in the governing system of the present invention;
Fig. 4 is the structure chart of IGBT inverter current Voltage loop controller in the governing system of the present invention;
Fig. 5 is the schematic diagram of the two closed-loop controls of IGBT inverter in the governing system of the present invention;
Fig. 6 is the main program flow chart of IGBT inverter in the governing system of the present invention;
Fig. 7 is the fuzzy control principle figure of the outer loop voltag of governing system IGBT inverter of the present invention;
Fig. 8 is the fuzzy control program flow chart of the outer loop voltag of governing system IGBT inverter of the present invention;
Fig. 9 is IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system circuit diagram two of the present invention (being used for pressing the internal feedback wire wound asynchronous motor);
Figure 10 is IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system circuit diagram three of the present invention (being used for pressing around the cage brushless double-fed motor);
Figure 11 is IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system circuit diagram four of the present invention (being used for pressing cage internal feedback brushless motor).
Embodiment
IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, with reference to Fig. 1, MD is an electric motor system, comprises auxiliary devices such as motor M and starter thereof, control switch and distribution.Governing system FC comprises the chopper speed governing main circuit of employing IGBT inverter and the digital intelligent control section of two DSP.In main circuit, the uncontrollable rectifier DR among the governing system FC switches through sub-winding (the normal Gong Zuo of Zheng Time KM1, KM2 disconnect, the KM3 closure) by the brush and the slip ring of motor, and IGBT inverter TI gets access to grid by transformer TAW.BC among the governing system FC is boost chopper (being made up of LS, SD, CS, C, BOD and SCR), and FR is frequency-sensitive variable resistance starter (or variable water resistance starter), and KM1, KM2 and KM3 are three-phase contactor.Fast diode BOD and thyristor SCR are rotor loop overvoltage protection link.Digital control part comprises two digital signal processor DSPs (Digital Signal Processor), two interior circular current controllers, programmable controller PLC (Programmable Logic Controller), wherein circular current controller NFC2 in the first interior circular current controller NFC1 and second is made up of D/A conversion and on-site programmable gate array FPGA (FieldProgrammable Gate Array).
Among the present invention because chopped mode digital intelligent speed-adjusting and control system identical of DC boosting copped wave side and employing thyristor inverter, so only stress the invention and the enforcement of IGBT inverter and control thereof.
In the present invention, adopt the IGBT inverter to replace thyristor inverter, the structure of FPGA mainly is divided into three parts among the second interior circular current controller NFC2: configurable logic block CLB (Configurable Logic Blocks), programmable I/O module and interconnector able to programme.FPGA clock frequency height, inner time delay is little; All control logic is finished by hardware, and speed is fast, the efficient height; Composition form is flexible, can integrated peripheral control, decoding and interface circuit.This IGBT inverter adopts two closed-loop control, i.e. current inner loop and outer voltage.Wherein current inner loop is recently to realize by six IGBT duties of control inverter T1, and it is all higher to the speed and the reliability requirement of control circuit.In addition, the inverter switching device pipe is opened and is also all required control circuit that good antijamming capability is arranged.Therefore the low layer control circuit of this governing system selects FPGA circuit at a high speed to be realized.FPGA can adopt the series of products of the leading Xilinx company in this field, as XC3000, XC4000 to Spartan-II E and VirtexII
Pro etc., FPGA can couple together logic array according to the field programming that requires of controlled function, and the logic array scale that FPGA comprised can be selected flexibly.
DSP belongs to Reduced Instruction Set Computing (RISC), and most of instructions can both be finished in one-period, and can pass through parallel processing technique, finishes many instructions in an instruction cycle; Simultaneously, DSP adopts improved Harvard structure, has the program and the data/address bus of separation, allows stored program and data simultaneously; Adopt multi-stage pipeline and built-in high-speed hardware multiplier, make it have data operation ability at a high speed, the chip of representative has TMS320LF24x series.In speed regulation process, need to keep inverter output voltage constant; and inverter over-voltage and over-current error protection and warning arranged; these occasions are had relatively high expectations to control strategy and control algolithm, so the inverter double closed-loop control system adopts DSP to cooperate software programming technique to realize.The DSP that uses can select the Motor Control special chip TMS320C24xx of American TI Company or high-end TMS320C28xx.
With reference to Fig. 2, three-phase inverter adopts full controlled tr tube IGBT (Insulated Gate BipolarFransistor), IGBT is the insulated door bipolar transistor, owing to carry out the low pressure speed governing in rotor-side, requirement of withstand voltage to switching device is low, can adopt price to hang down the complete switching device of description.
With reference to Fig. 3, in the present invention, the digital intelligent hardware control system is a double-layer structure, and the upper strata is DSP, and lower floor mainly is made up of FPGA and D/A high speed circuit.DSP mainly finishes the outer shroud voltage control, for circular current control in the FPGA offers value data.Directly provide trigger impulse by FPGA to IGBT inverter IGBT gate pole.
With reference to Fig. 4, in interior circular current control, the generation of the control wave of inversion IGBT selects for use a slice FPGA of appropriate scale to realize.Wherein D/A is a digital to analog converter, and MC is a down counter, and DA1, DA2 are linear operational amplifier.
Use lime sensor acquisition inverter current Io among the second current/voltage acquisition system UIM2 and gather contravarianter voltage U
0, above-mentioned signal converts the signal U of digital quantity to by operational amplifier DA1, DA2, modulus converter A/D
Fr *, I
Fr *, and deliver to second digital signal processor DSP 2; Second digital signal processor DSP 2 is for FPGA provides clock, obtains required inverter IGBT control signal by second digital signal processor DSP 2 according to the control algolithm of fuzzy, delivers to the pulse generator FF of FPGA; The minimum service time t of inverter is provided by DSP
OnWith minimum turn-off time t
Off, produce and these two corresponding pulses of time by pulse generator, and carry out logical operation, thereby obtain the pwm control signal of inverter switching device pipe IGBT with normal pulse signal, regulate duty ratio according to operation conditions, to keep inverter output voltage U
0Constant, satisfy the requirement of boost chopper.In speed regulation process, inverter feedback electrical power.When inversion circuit generation overcurrent, FPGA sends down pulse to copped wave side DSP1.
With reference to Fig. 5, in the two loop control theories of IGBT inverter, interior ring is a Current Control, and outer shroud is a voltage control, adopts Fuzzy PID to realize by second digital signal processor DSP 2.Wherein, Fuzzy PID is stored in second digital signal processor DSP 2 in advance, and the step of control procedure is as follows: (1) is compared by the feedback voltage of given voltage and detection, obtains voltage deviation.(2) AVR is an automatic voltage regulator, adopts Fuzzy PID, makes inverter output voltage be stabilized in required set-point, and sends the inverter current set-point to ACR.(3) ACR is an automatic current regulator, adopts Fuzzy PID, the control impuls of output inverter.(4) by the FPGA output pwm signal, the switch I GBT of control inverter is to guarantee the stable of under various running statuses inverter current.(5) three-phase inverter TI, by contravariant transformer TAW to electrical network feedback electrical power.
With reference to Fig. 6, in the enforcement of IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system, inverter side is implemented the interior circular current of IGBT inverter TI is controlled by the second interior circular current controller NFC2, by the control that second digital signal processor DSP 2 is implemented inverter voltage, job step is described in detail as follows:
(1) after the speed system start powered on, DSP2 started initialization subroutine self is carried out initialization, makes control system be in the preparation state;
(2) screen displaying is started working, and the user can input operation information;
(3) system program is transferred the parameter input subroutine, input technology type, technological parameter etc., and system is by integrated treatment decision inverter voltage set-point;
(4) obtain signal from second digital signal processor and judge whether governing system is in normal operating conditions, the normal continuation; If the undesired step 16 that then skips to;
(5) after entering the speed governing state, interior circular current control and the work of outer shroud voltage control system, sensor acquisition electric current, the magnitude of voltage of current/voltage acquisition system UIM2;
(6) feedback voltage value and given magnitude of voltage are compared, obtain their difference;
(7) transfer fuzzy adjuster AVR;
(8) provide the current value of inverter by current regulator ACR;
(9) feedback current value and given current value are compared, obtain their difference;
(10) transfer fuzzy current regulator ACR;
(11) provide the PWM width-modulation pulse of inverter;
(12) keep inverter output voltage constant;
(13) inverter TI feedback power;
(14) see inversion circuit whether exist overcurrent, overvoltage, etc. fault, then do not skip to step 5 if having; Continue if having then;
(15) inverter overcurrent, overvoltage are protected;
(16) system protection changes non-speed governing state over to.
With reference to Fig. 7 and Fig. 8, in the embodiment of IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system of the present invention, system's outer shroud voltage control can adopt fuzzy control, PID control and self-adjusting parameter fuzzy PID controller.To be fuzzy control that dynamic response characteristic is good combine with the good PID control of steady-state response characteristic fuzzy controller, can give full play to advantage separately.Utilize Fuzzy parameter optimization technology, to the proportional gain k of PID controller
p, integration time constant k
iWith derivative time constant k
dCarry out online adjustment, thereby realize the Optimal Control of running.The example that is applied as with on the self-adjusting parameter fuzzy PID control of pump has illustrated this governing system control principle and software flow.Can import technological parameter and select fuzzy controller by touch-screen, record the virtual voltage and the electric current of inverter, relatively obtain their error and the differential of the error of calculation with set-point by transducer.Here mainly utilize the parameter of the online adjustment of fuzzy controller PID, can give full play to fuzzy control and PID control advantage separately.
Parameter input and output at native system, realize man-machine interaction by touch-screen equally, carry out setting, preservation and the modification of parameter, the parameter of inverter also can show on touch-screen, being undertaken by first digital signal processor DSP 1 and second digital signal processor DSP 2 alternately of information.
Be suitable for the present invention and with the drive motor of governing system four classes arranged: middle pressure conventional wound asynchronous motor (Fig. 1), middle pressure internal feedback wire wound asynchronous motor (Fig. 9), middle pressure are around cage brushless double-fed motor (Figure 10) and middle pressure cage internal feedback brushless motor (Figure 11).
Claims (6)
1.IGBT the middle voltage electromotor chopped mode dual DSP digital intelligent speed-regulating control system of inverter, comprise electric motor system (MD) and governing system (FC), described governing system (FC) comprises the uncontrollable rectifier (DR) that connects successively, overvoltage protection controller (BOD), boost chopper (BC), inverter (T1) and contravariant transformer (TAW), it is characterized in that: described inverter (TI) adopts complete controlled insulated door double-pole switch pipe IGBT, between described uncontrollable rectifier (DR) and boost chopper (BC), be connected to the first current/voltage acquisition system (UIM1), the output of the described first current/voltage acquisition system (UIM1) is connected circular current controller (NFC1) in first digital signal processor (DSP1) and connected first with described overvoltage protection controller (BOD), the PWM of circular current controller (NFC1) output connects the input of described chopper (BC) in described first digital signal processor (DSP1) and connected first, between described boost chopper (BC) and inverter (T1), be connected to the second current/voltage acquisition system (UIM2), the output of the described second current/voltage acquisition system (UIM2) connects circular current controller (NFC2) in second digital signal processor (DSP2) and connected second, the PWM of circular current controller (NFC2) output connects the input of described inverter (T1) in described second digital signal processor (DSP2) and connected second, described first digital signal processor (DSP1) also connects overheated detection of overcurrent-overvoltage and the programmable controller (PLC) in the described governing system (FC), described Programmable Logic Controller (PLC) connects described electric motor system (MD) and governing system (FC), and described first digital signal processor (DSP1) and second digital signal processor (DSP2) are interconnected; Described first digital signal processor (DSP1) and the first coupled interior circular current controller (NFC1) are implemented the interior circular current of described boost chopper (BC) is controlled, described first digital signal processor (DSP1) is implemented the outer shroud speed control to governing system (FC), and by the program control of described programmable controller (PLC) enforcement to governing system (FC) and electric motor system (MD), described second digital signal processor (DSP2) and coupled interior circular current controller (NFC2) are implemented the interior circular current of described inverter (T1) is controlled, described second digital signal processor (DSP2) is implemented the voltage of described inverter (T1) is controlled, and the steps include:
(1) after the governing system start powered on, DSP2 started initialization subroutine self is carried out initialization, makes control system be in the preparation state;
(2) screen displaying is started working, and the user can input operation information;
(3) system program is transferred the parameter input subroutine, input technology type, technological parameter etc., and system is by integrated treatment decision inverter voltage set-point;
(4) obtain signal from second digital signal processor and judge whether governing system is in normal operating conditions, the normal continuation; If the undesired step 16 that then skips to;
(5) after entering the speed governing state, interior circular current control and the work of outer shroud voltage control system, sensor acquisition electric current, the magnitude of voltage of current/voltage acquisition system UIM2;
(6) feedback voltage value and given magnitude of voltage are compared, obtain their difference;
(7) transfer fuzzy adjuster AVR;
(8) provide the current value of inverter by current regulator ACR;
(9) feedback current value and given current value are compared, obtain their difference;
(10) transfer fuzzy current regulator ACR;
(11) provide the PWM width-modulation pulse of inverter;
(12) keep inverter output voltage constant;
(13) inverter TI feedback power;
(14) see inversion circuit whether exist overcurrent, overvoltage, etc. fault, then do not skip to step 5 if having; Continue if having then;
(15) inverter overcurrent, overvoltage are protected;
(16) system protection changes non-speed governing state over to.
2. according to the described IGBT inverter of claim 1 middle voltage electromotor chopped mode 3 dual DSP digital governing systems, it is characterized in that: circular current controller (NFC2) comprises linear amplifier, D/A converter, down counter, comparator and output circuits for triggering in described second; Be provided with acquisition system (UIM2) in inversion system, lime transducer (LEM) is wherein gathered dc inversion voltage (U
0) and electric current (I
0); In described the 6th step (6), described second digital signal processor (DSP2) provides clock, fuzzy/given (I of pid control algorithm
* O), the minimum service time (t of inverter (T1)
On) and minimum turn-off time (t
Off), above-mentioned acquired signal is carried out the electric current (I of control inverter after the logical operation by circular current controller (NFC2) in described second
Aw) and voltage (V
Aw), and remain a constant.
3. according to the described IGBT inverter of claim 2 middle voltage electromotor chopped mode dual DSP digital governing system, it is characterized in that: described first digital signal processor (DSP1) stores input-output subprogram, can realize man-machine interaction by touch-screen, the setting, controller type of carrying out technological parameter selected, the preservation of technological parameter and revise the input-output subprogram of some operations.
4. IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system according to claim 3, it is characterized in that: described first digital signal processor (DSP1) stores handles described governing system (FC) overcurrent, overvoltage, overheated and open-phase fault, and the warning subprogram of described electric motor system (MD) and environment corollary equipment fault.
5. IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system according to claim 4, it is characterized in that: described first digital signal processor (DSP1) is provided with RS232/RS485 communication interface, CAN fieldbus, IP interface, and store the telecommunication supervisory routine, by RS232/RS485 communication interface and/or CAN fieldbus and/or the computer-implemented telecommunication of IP interface and Surveillance center, described Surveillance center computer directly carries out remote monitoring to the state of described governing system (FC).
6. IGBT inverter middle voltage electromotor chopped mode dual DSP digital governing system according to claim 5, it is characterized in that: described first digital signal processor (DSP1) replaces with single-chip microcomputer.
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| CN101471623B (en) * | 2008-06-03 | 2010-12-08 | 广东华拿东方能源有限公司 | Chopping type bumpless switching bis-PLC intelligent speed-governing system of medium-pressure motor |
| CN101527539B (en) * | 2009-04-30 | 2011-01-05 | 广东华拿东方能源有限公司 | Speed adjustment control system of anti-inversion failure seamless switching motor and control method thereof |
| CN102013869A (en) * | 2010-10-19 | 2011-04-13 | 北方工业大学 | Current control device and current control method for alternating current asynchronous motor |
| CN102044924A (en) * | 2010-11-26 | 2011-05-04 | 山东电力研究院 | Internal double-feed wind-driven generator |
| CN102201781A (en) * | 2010-03-25 | 2011-09-28 | 通用汽车环球科技运作有限责任公司 | Method and apparatus to monitor an electric motor control circuit |
| CN103501143A (en) * | 2013-10-11 | 2014-01-08 | 昆山市润苏物资有限公司 | Direct-current motor control system |
| CN103607161A (en) * | 2013-08-12 | 2014-02-26 | 四川极度电控系统制造有限责任公司 | IGBT cascade speed regulation system, control method and control system thereof |
| CN104779881A (en) * | 2015-03-30 | 2015-07-15 | 成都颉隆科技有限公司 | Energy-saving type motor control system based on phase shift treatment |
| CN106788087A (en) * | 2017-03-20 | 2017-05-31 | 深圳市微芯智能科技有限公司 | The control method and device of motor motion control system |
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2007
- 2007-09-27 CN CNB2007101225731A patent/CN100505513C/en not_active Expired - Fee Related
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| CN101471623B (en) * | 2008-06-03 | 2010-12-08 | 广东华拿东方能源有限公司 | Chopping type bumpless switching bis-PLC intelligent speed-governing system of medium-pressure motor |
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| CN102201781B (en) * | 2010-03-25 | 2015-01-07 | 通用汽车环球科技运作有限责任公司 | Method and apparatus to monitor an electric motor control circuit |
| CN102201781A (en) * | 2010-03-25 | 2011-09-28 | 通用汽车环球科技运作有限责任公司 | Method and apparatus to monitor an electric motor control circuit |
| CN101841166A (en) * | 2010-05-11 | 2010-09-22 | 英伟力新能源科技(上海)有限公司 | Double DSP control method for photovoltaic grid-connected inverter |
| CN102013869A (en) * | 2010-10-19 | 2011-04-13 | 北方工业大学 | Current control device and current control method for alternating current asynchronous motor |
| CN102044924A (en) * | 2010-11-26 | 2011-05-04 | 山东电力研究院 | Internal double-feed wind-driven generator |
| CN103607161A (en) * | 2013-08-12 | 2014-02-26 | 四川极度电控系统制造有限责任公司 | IGBT cascade speed regulation system, control method and control system thereof |
| CN103501143A (en) * | 2013-10-11 | 2014-01-08 | 昆山市润苏物资有限公司 | Direct-current motor control system |
| CN104779881A (en) * | 2015-03-30 | 2015-07-15 | 成都颉隆科技有限公司 | Energy-saving type motor control system based on phase shift treatment |
| CN106788087A (en) * | 2017-03-20 | 2017-05-31 | 深圳市微芯智能科技有限公司 | The control method and device of motor motion control system |
| CN107707141A (en) * | 2017-10-28 | 2018-02-16 | 安徽工程大学 | A kind of circuit control device and method using artificial intelligence process device |
| CN113794427A (en) * | 2021-10-09 | 2021-12-14 | 陕西航空电气有限责任公司 | Motor control system for EHA and redundancy control method |
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