CN201629732U - Real-time data acquisition and pulse distribution system of general frequency converter - Google Patents
Real-time data acquisition and pulse distribution system of general frequency converter Download PDFInfo
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- CN201629732U CN201629732U CN2010201622979U CN201020162297U CN201629732U CN 201629732 U CN201629732 U CN 201629732U CN 2010201622979 U CN2010201622979 U CN 2010201622979U CN 201020162297 U CN201020162297 U CN 201020162297U CN 201629732 U CN201629732 U CN 201629732U
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Abstract
The utility model provides a real-time data acquisition and pulse distribution system of a general frequency converter, which comprises a general frequency converter control unit, an optical fiber communication board and a pulse distribution board. The pulse distribution board converts simulated signals acquired by sensors into serial data signals to be transmitted to the optical fiber communication board through optical fibers; the optical fiber communication board converts the serial data signals into parallel data signals to be transmitted to the general frequency changer control unit; the general frequency changer control units calculates the parallel data signals through algorithm to generate PWM control pulse; the general frequency changer control unit transmits the PWM control pulse, DA protection threshold value and control commands to the optical fiber communication board; the optical fiber communication board converts the control commands, the DA protection threshold value and the PWM control pulse into serial signals to be transmitted to the pulse distribution board through the optical fibers; and the pulse distribution board converts the serial signals of the PWM control pulse into parallel signals to be outputted to a power driving unit. The system has the advantages of simple wire distribution, and high anti-interference capacity.
Description
Technical field
The utility model relates to electric and electronic technical field, particularly a kind of universal frequency converter real-time data acquisition and pulse distribution system.
Background technology
Along with the progress of power electronic technology and variable-frequency control technique, the application of universal frequency converter more and more widely.Universal frequency converter has that energy-saving effect is remarkable, speed ratio is wide and application advantage widely.
The real-time data acquisition of universal frequency converter and pulse distribution system comprise the collection of input and output voltage and electric current, the collection of malfunction, the output of PWM control impuls, the output of DA protection threshold value etc.
Introduce the real-time data acquisition of present universal frequency converter and the composition of pulse distribution system below in conjunction with Fig. 1.
The analog signal that each transducer 102 will be gathered in real time sends universal frequency converter control unit 101 to, and 101 pairs of described signals of universal frequency converter control unit carry out filtering, ratio conditioning and AD conversion, carry out the algorithm computing then; Universal frequency converter control unit 101 sends to pulse distribution plate 103 with the PWM control impuls that produces by parallel bus simultaneously.In addition, universal frequency converter control unit 101 also needs to power for each transducer 102 in the prior art.
More than this data interactive mode need adopt hardwired analog quantity and PWM control impuls long Distance Transmission in cabinet, be subjected to the interference of forceful electric power signal in the cabinet easily, therefore, present this structure antijamming capability is relatively poor, and the parallel transmission wiring is complicated.
The utility model content
The technical problems to be solved in the utility model provides a kind of universal frequency converter real-time data acquisition and pulse distribution system, has better anti-jamming capability, and wiring is simple.
The utility model provides a kind of universal frequency converter real-time data acquisition and pulse distribution system, comprising: universal frequency converter control unit, optical-fibre communications plate and pulse distribution plate;
Described pulse distribution plate is to send described optical-fibre communications plate to through optical fiber after the digital signal of serial with the analog signal conversion of each sensor acquisition;
Described optical-fibre communications plate is converted to parallel digital signal with the digital signal of described serial and sends to described universal frequency converter control unit, and described universal frequency converter control unit carries out the algorithm computing to described parallel digital signal, produces the PWM control impuls;
Described universal frequency converter control unit sends to described optical-fibre communications plate with described PWM control impuls, DA protection threshold value and control command;
Described optical-fibre communications plate is converted to serial signal with control command, DA protection threshold value and described PWM control impuls and sends to described pulse distribution plate through optical fiber;
Described pulse distribution plate is exported to power drive unit after the serial signal of PWM control impuls is converted to parallel signal.
Preferably, described optical-fibre communications plate comprises optical fiber transmitting-receiving interface, field programmable gate array and parallel bus;
Described field programmable gate array will send to described universal frequency converter control unit by described parallel bus after will being converted to parallel signal from the serial signal that optical fiber is received and dispatched interface, send to described pulse distribution plate by described optical fiber transmitting-receiving interface and optical fiber successively after will being converted to serial signal from the parallel signal of described universal frequency converter control unit by described parallel bus again.
Preferably, when described pulse distribution plate is inversion pulse control board, comprise first optical fiber interface, programmable logic device, ADC, DAC, filtering and ratio circuit, comparison circuit, filtering adjustment circuit and second optical fiber interface;
Described filtering and ratio circuit carry out being sent to described ADC after filtering and the ratio conditioning to the three-phase inversion electric current from transducer;
Three-phase inversion current conversion after described ADC will nurse one's health is that digital signal is sent to described programmable logic device;
Described programmable logic device is converted to serial signal with the digital signal of three-phase inversion electric current;
Described filtering is adjusted and will be sent to described programmable logic device after circuit will be nursed one's health by the pulse feedback signal of second optical fiber interface feedback;
Described programmable logic device with described serial signal, the conditioning after pulse feedback signal and the fault message of inversion module send to the optical-fibre communications plate by first optical fiber interface and optical fiber;
Described programmable logic device will send to power drive unit through the filtering adjustment circuit and second optical fiber interface after will being converted to parallel signal from the PWM control impuls of optical-fibre communications plate successively;
Described programmable logic device will be gone here and there and change from the inversion overcurrent numerical protection threshold value of universal frequency converter control unit; be sent to DAC then and carry out digital-to-analogue conversion; simulation protection threshold signal after DAC will change is sent to comparison circuit, and comparison circuit compares generation inversion over-current signal with the three-phase inversion electric current of described simulation protection threshold signal and collection.
Preferably, when described pulse distribution plate is copped wave pulse control board, comprise first optical fiber interface, programmable logic device, ADC, DAC, filtering and ratio circuit, comparison circuit, filtering adjustment circuit and second optical fiber interface;
Described filtering and ratio circuit carry out being sent to described ADC after the filtering ratio is nursed one's health to three road chopper currents from transducer and carry out analog-to-digital conversion;
Numeral three road chopper currents after described ADC will change are sent to described programmable logic device to carry out and goes here and there conversion;
Described filtering is adjusted and will be sent to described programmable logic device after circuit will be nursed one's health by the pulse feedback signal of second optical fiber interface feedback;
The pulse feedback signal after serial three road chopper currents after described programmable logic device will be changed, the conditioning and the fault message of copped wave module send to the optical-fibre communications plate by first optical fiber interface and optical fiber successively;
Described programmable logic device will send to power drive unit through the filtering adjustment circuit and second optical fiber interface after will being converted to parallel signal from the copped wave control impuls of optical-fibre communications plate successively;
Described programmable logic device will be gone here and there and change from the copped wave overcurrent numerical protection threshold value of universal frequency converter control unit; be sent to DAC then and carry out digital-to-analogue conversion; simulation protection threshold signal after DAC will change is sent to comparison circuit, and comparison circuit compares generation copped wave over-current signal with the chopper current of described simulation protection threshold signal and collection.
Preferably, when described pulse distribution plate is the commutating pulse control board, comprise first optical fiber interface, microprocessor, ADC, DAC, filtering ratio circuit, comparison circuit and conditioning drive circuit;
Described filtering ratio circuit carries out being sent to described ADC after filtering and the ratio conditioning to voltage on line side and the current on line side from transducer;
Voltage on line side after described ADC will nurse one's health and current on line side are converted to digital signal and are sent to described microprocessor;
Described microprocessor is converted to serial signal with the digital signal of voltage on line side and current on line side and sends to the universal frequency converter control unit by first optical fiber interface, optical fiber and optical-fibre communications plate successively; The universal frequency converter control unit carries out the algorithm computing by described voltage on line side and current on line side, produces commutating pulse, and commutating pulse is sent to described microprocessor through described optical-fibre communications plate, optical fiber and first optical fiber interface successively; Described microprocessor is gone here and there commutating pulse and is changed, and sends to power drive unit through the conditioning drive circuit then;
Described universal frequency converter control unit sends to described programmable logic device by the described optical-fibre communications plate and first optical fiber interface successively with the protection threshold value of net side overcurrent and goes here and there and change; Parallel signal after described programmable logic device will be changed sends to DAC and carries out digital-to-analogue conversion; simulation protection threshold value after DAC will change is sent to comparison circuit, and comparison circuit compares generation net side over-current signal with the current on line side of described protection threshold value and collection.
Preferably, when described pulse distribution plate is the ground connection check-out console, comprise first optical fiber interface, programmable logic device, ADC, DAC, filtering ratio circuit and comparison circuit;
Send to described ADC after intermediate dc electric current, middle dc voltage and the middle voltage of filtering ratio and comparison circuit autobiography sensor in future is nursed one's health and carry out digital-to-analogue conversion;
Digital intermediate dc electric current, middle dc voltage and middle voltage after described ADC will change sends to described programmable logic device to carry out and goes here and there conversion;
Serial signal after described programmable logic device will be changed sends to described universal frequency converter control unit by described first optical fiber interface and optical-fibre communications plate successively;
Described universal frequency converter control unit sends to described programmable logic device by the described optical-fibre communications plate and first optical fiber interface successively with the protection threshold value of the protection threshold value of the protection threshold value of earth fault, intermediate dc overcurrent and intermediate voltage overvoltage and goes here and there and change; Parallel signal after described programmable logic device will be changed sends to DAC and carries out digital-to-analogue conversion; simulation protection threshold value after DAC will change is sent to comparison circuit, and comparison circuit compares generation over-voltage and over-current and earth fault signal with the signal of described protection threshold value and collection.
Compared with prior art, the utlity model has following advantage:
This universal frequency converter real-time data acquisition and pulse distribution system comprise universal frequency converter control unit, optical-fibre communications plate and pulse distribution plate; Communicate by optical fiber between universal frequency converter control unit and the pulse distribution plate, and mutual mutually is the digital signal of serial, because optical fiber carries out Serial Data Transfer Mode by light signal, antijamming capability is strong, and the serial transmission wiring is simple, therefore, can eliminate the shortcoming that available technology adopting hardwired transmission of analogue signal and PWM parallel pulse signal bring.
Description of drawings
Fig. 1 is universal frequency converter real-time data acquisition and a pulse distribution system construction drawing in the prior art;
Fig. 2 is universal frequency converter real-time data acquisition and the pulse distribution system construction drawing that the utility model provides;
Fig. 3 is the another example structure figure that the utility model provides;
Fig. 4 is another example structure figure that the utility model provides.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
Referring to Fig. 2, this figure is universal frequency converter real-time data acquisition and the pulse distribution system construction drawing that the utility model provides.
Universal frequency converter real-time data acquisition that present embodiment provides and pulse distribution system comprise: universal frequency converter control unit 201, optical-fibre communications plate 202 and pulse distribution plate 203.
Described pulse distribution plate 203 is to send described optical-fibre communications plate 202 to through optical fiber after the digital signal of serial with the analog signal conversion of each sensor acquisition.
Need to prove that pulse distribution plate 203 can be inversion pulse control board, copped wave pulse control board, commutating pulse control board and/or ground connection check-out console.
Described optical-fibre communications plate 202 is converted to parallel digital signal with the digital signal of described serial and sends to described universal frequency converter control unit 201,201 pairs of described parallel digital signals of described universal frequency converter control unit carry out the algorithm computing, produce the PWM control impuls.
Described universal frequency converter control unit 201 is protected DA threshold value, control command and described PWM control impuls, is sent to described optical-fibre communications plate 202.
Described optical-fibre communications plate 202 is converted to serial signal with described PWM control impuls, DA protection threshold value and control command and sends to described pulse distribution plate 203 through optical fiber.
Described pulse distribution plate 203 is exported to power drive unit after the serial signal of PWM control impuls is converted to parallel signal.
Universal frequency converter real-time data acquisition that present embodiment provides and pulse distribution system; after the analog signal of each transducer of gathering carried out analog-to-digital conversion; adopt the Serial Data Transfer Mode mode to transmit by optical fiber, adopt the Serial Data Transfer Mode mode to carry out the transmission of digital signal PWM control impuls, DA protection threshold value and control command by optical fiber simultaneously.Because the holding wire that serial transmission needs is less, therefore, the wiring of whole system is simple.And the antijamming capability of digital signal is stronger than analog signal, and present embodiment is converted to light signal with digital signal again and transmits by optical fiber, and light signal is stronger than the antijamming capability of digital signal.
Introduce the concrete composition of each module that the utility model provides in detail below in conjunction with accompanying drawing.
Referring to Fig. 3, this figure is the another example structure figure that the utility model provides.
Present embodiment is mainly introduced the composition of optical-fibre communications plate.
The optical-fibre communications plate that present embodiment provides comprises optical fiber transmitting-receiving interface 202c, field programmable gate array FPGA202b and parallel bus 202a.
Described FPGA202b will send to described universal frequency converter control unit 201 by described parallel bus 202a after will being converted to parallel signal from the serial signal that optical fiber is received and dispatched interface 202c, send to described pulse distribution plate 203 by described optical fiber transmitting-receiving interface 202c and optical fiber successively after will being converted to serial signal from the parallel signal of described universal frequency converter control unit 201 by described parallel bus 202a again.
Present embodiment adopts the control core of FPGA202b as the optical-fibre communications plate, mainly finishes the string and the conversion of data and goes here and there the sequential coupling etc. of conversion, fault comprehensive and parallel interface.The communicating by letter of optical-fibre communications plate and each module adopted the custom protocol based on the RS232 standard agreement, and message transmission rate reaches as high as 10Mbps, satisfies the requirement of system real time.And this optical-fibre communications plate is provided with 24 pairs of optical fiber interfaces, can carry out real time communication with 24 modules simultaneously, can carry out cutting and expansion according to actual needs.
Need to prove that the signal that universal frequency converter control unit 201 sends to pulse distribution plate 203 had both comprised the pwm pulse control signal, comprise DA protection threshold value and control command again.Wherein, DA protection threshold value and control command are that the pulse distribution intralamellar part uses, and the pwm pulse control signal needs pulse distribution plate 203 to carry out sending to power drive unit behind the signal condition.
Present embodiment adopts optical fiber to carry out data communication, and carrying out signal like this between optical-fibre communications plate and each pulse distribution plate only needs two optical fiber to get final product alternately, and wiring is simple like this, maintains easily.
Introduce the composition of each pulse distribution plate in detail below in conjunction with Fig. 4.
Referring to Fig. 4, this figure is another example structure figure that the utility model provides.
Pulse distribution plate in the present embodiment comprises ground connection check-out console, commutating pulse control board, copped wave pulse control board and inversion pulse control board.
Because the operation principle of each pulse distribution plate is identical, therefore, is that example describes in detail with inversion pulse control board below.
Inversion pulse control board comprises the first optical fiber interface 203a, programmable logic device (CPLD) 203b, ADC203c, DAC203f, filtering and ratio circuit 203d, comparison circuit 203e, filtering adjustment circuit 203h and the second optical fiber interface 203g.
Described filtering and ratio circuit 203d carry out being sent to described ADC203c after filtering and the ratio conditioning to the three-phase inversion electric current from transducer;
Three-phase inversion current conversion after described ADC203c will nurse one's health is that digital signal is sent to described CPLD203b;
Described CPLD203b is converted to serial signal with the digital signal of three-phase inversion electric current (A phase, B phase and C are mutually);
Described filtering is adjusted and will be sent to described CPLD203b after circuit 203h will nurse one's health by the pulse feedback signal of second optical fiber interface feedback;
Described CPLD203b with described serial signal, the conditioning after pulse feedback signal and the fault message of inversion module send to optical-fibre communications plate 202 by the first optical fiber interface 203a and optical fiber.
Described CPLD203b will send to power drive unit through the filtering adjustment circuit and the second optical fiber interface 203g after will being converted to parallel signal from the PWM control impuls of optical-fibre communications plate successively.
Described CPLD203b will go here and there and change from the inversion overcurrent numerical protection threshold value of universal frequency converter control unit; be sent to DAC203f then and carry out digital-to-analogue conversion; simulation protection threshold signal after DAC203f will change is sent to comparison circuit 203e, and comparison circuit 203e compares generation inversion over-current signal with the three-phase inversion electric current of described simulation protection threshold signal and collection.
Need to prove that copped wave pulse control board is identical with the framework of inversion pulse control board, the sensor signal that different only is gathers is different with the pwm pulse of feedback, introduces the composition of copped wave pulse control board below.
Copped wave pulse control board comprises first optical fiber interface, programmable logic device, ADC, DAC, filtering and ratio circuit, comparison circuit, filtering adjustment circuit and second optical fiber interface;
Described filtering and ratio circuit carry out being sent to described ADC after the filtering ratio is nursed one's health to three road chopper currents from transducer and carry out analog-to-digital conversion;
Numeral three road chopper currents after described ADC will change are sent to described programmable logic device to carry out and goes here and there conversion;
Described filtering is adjusted and will be sent to described programmable logic device after circuit will be nursed one's health by the pulse feedback signal of second optical fiber interface feedback;
The pulse feedback signal after serial three road chopper currents after described programmable logic device will be changed, the conditioning and the fault message of copped wave pulse control board send to the optical-fibre communications plate by first optical fiber interface and optical fiber successively;
Described programmable logic device will send to power drive unit through the filtering adjustment circuit and second optical fiber interface after will being converted to parallel signal from the copped wave control impuls of optical-fibre communications plate successively;
Described programmable logic device will be gone here and there and change from the copped wave overcurrent numerical protection threshold value of universal frequency converter control unit; be sent to DAC then and carry out digital-to-analogue conversion; simulation protection threshold signal after DAC will change is sent to comparison circuit, and comparison circuit compares generation copped wave over-current signal with the chopper current of described simulation protection threshold signal and collection.
Introduce the rectification control board below, the rectification control board is mainly according to detected voltage on line side, the control command that current on line side and universal frequency converter control unit are sent out produces commutating pulse through the algorithm computing, the power controlling element turned on and off after commutating pulse amplified through overdriving, the control board of rectification simultaneously also can be uploaded to the universal frequency converter control unit to detected voltage on line side and current on line side signal, produce the rectification control impuls and issue the rectification control board by the universal frequency converter control unit by fiber optic serial, the rectification control board sends to power cell after the rectification control impuls is driven amplification, turning on and off of power controlling element, more than two kinds of schemes all can realize rectification control, can make things convenient for the user to choose wherein a kind of as required.
The commutating pulse control board comprises first optical fiber interface, microprocessor, ADC, DAC, filtering ratio circuit, comparison circuit and conditioning drive circuit;
Described filtering ratio circuit carries out being sent to described ADC after filtering and the ratio conditioning to voltage on line side and the current on line side from transducer;
Voltage on line side after described ADC will nurse one's health and current on line side are converted to digital signal and are sent to described microprocessor;
Described microprocessor is converted to serial signal with the digital signal of voltage on line side and current on line side and sends to the universal frequency converter control unit by first optical fiber interface, optical fiber and optical-fibre communications plate successively; The universal frequency converter control unit carries out the algorithm computing by described voltage on line side and current on line side, produces commutating pulse, and commutating pulse is sent to described microprocessor through described optical-fibre communications plate, optical fiber and first optical fiber interface successively; Described microprocessor is gone here and there commutating pulse and is changed, and sends to power drive unit through the conditioning drive circuit then;
Described universal frequency converter control unit sends to described programmable logic device by the described optical-fibre communications plate and first optical fiber interface successively with the protection threshold value of net side overcurrent and goes here and there and change; Parallel signal after described programmable logic device will be changed sends to DAC and carries out digital-to-analogue conversion; simulation protection threshold value after DAC will change is sent to comparison circuit, and comparison circuit compares generation net side over-current signal with the current on line side of described protection threshold value and collection.
Introduce the ground connection check-out console below, the ground connection check-out console is mainly used in the data acquisition and the fault detect of intermediate dc link.
The ground connection check-out console comprises first optical fiber interface, programmable logic device, ADC, DAC, filtering ratio circuit and comparison circuit;
Send to described ADC after intermediate dc electric current, middle dc voltage and the middle voltage of filtering ratio and comparison circuit autobiography sensor in future is nursed one's health and carry out digital-to-analogue conversion;
Digital intermediate dc electric current, middle dc voltage and middle voltage after described ADC will change sends to described programmable logic device to carry out and goes here and there conversion;
Serial signal after described programmable logic device will be changed sends to described universal frequency converter control unit by described first optical fiber interface and optical-fibre communications plate successively;
Described universal frequency converter control unit sends to described programmable logic device by the described optical-fibre communications plate and first optical fiber interface successively with the protection threshold value of the protection threshold value of the protection threshold value of earth fault, intermediate dc overcurrent and intermediate voltage overvoltage and goes here and there and change; Parallel signal after described programmable logic device will be changed sends to DAC and carries out digital-to-analogue conversion; simulation protection threshold value after DAC will change is sent to comparison circuit, and comparison circuit compares generation over-voltage and over-current and earth fault signal with the signal of described protection threshold value and collection.
Universal frequency converter real-time data acquisition that the utility model provides and pulse distribution system can be when guaranteeing real time of data transmission, the antijamming capability of system effectively is provided, and each pulse distribution plate can carry out cutting and expansion according to actual needs, for example, whole system can comprise that ground connection check-out console, inversion pulse control board, copped wave pulse control board and commutating pulse control board satisfy the diversified demand of whole system.
The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all still belongs in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (6)
1. universal frequency converter real-time data acquisition and pulse distribution system is characterized in that, comprising: universal frequency converter control unit, optical-fibre communications plate and pulse distribution plate;
Described pulse distribution plate is to send described optical-fibre communications plate to through optical fiber after the digital signal of serial with the analog signal conversion of each sensor acquisition;
Described optical-fibre communications plate is converted to parallel digital signal with the digital signal of described serial and sends to described universal frequency converter control unit, and described universal frequency converter control unit carries out the algorithm computing to described parallel digital signal, produces the PWM control impuls;
Described universal frequency converter control unit sends to described optical-fibre communications plate with described PWM control impuls, DA protection threshold value and control command;
Described optical-fibre communications plate is converted to serial signal with control command, DA protection threshold value and described PWM control impuls and sends to described pulse distribution plate through optical fiber;
Described pulse distribution plate is exported to power drive unit after the serial signal of PWM control impuls is converted to parallel signal.
2. universal frequency converter real-time data acquisition according to claim 1 and pulse distribution system is characterized in that, described optical-fibre communications plate comprises optical fiber transmitting-receiving interface, field programmable gate array and parallel bus;
Described field programmable gate array will send to described universal frequency converter control unit by described parallel bus after will being converted to parallel signal from the serial signal that optical fiber is received and dispatched interface, send to described pulse distribution plate by described optical fiber transmitting-receiving interface and optical fiber successively after will being converted to serial signal from the parallel signal of described universal frequency converter control unit by described parallel bus again.
3. universal frequency converter real-time data acquisition according to claim 2 and pulse distribution system, it is characterized in that, when described pulse distribution plate is inversion pulse control board, comprise first optical fiber interface, programmable logic device, ADC, DAC, filtering and ratio circuit, comparison circuit, filtering adjustment circuit and second optical fiber interface;
Described filtering and ratio circuit carry out being sent to described ADC after filtering and the ratio conditioning to the three-phase inversion electric current from transducer;
Three-phase inversion current conversion after described ADC will nurse one's health is that digital signal is sent to described programmable logic device;
Described programmable logic device is converted to serial signal with the digital signal of three-phase inversion electric current;
Described filtering is adjusted and will be sent to described programmable logic device after circuit will be nursed one's health by the pulse feedback signal of second optical fiber interface feedback;
Described programmable logic device with described serial signal, the conditioning after pulse feedback signal and the fault message of inversion module send to the optical-fibre communications plate by first optical fiber interface and optical fiber;
Described programmable logic device will send to power drive unit through the filtering adjustment circuit and second optical fiber interface after will being converted to parallel signal from the PWM control impuls of optical-fibre communications plate successively;
Described programmable logic device will be gone here and there and change from the inversion overcurrent numerical protection threshold value of universal frequency converter control unit; be sent to DAC then and carry out digital-to-analogue conversion; simulation protection threshold signal after DAC will change is sent to comparison circuit, and comparison circuit compares generation inversion over-current signal with the three-phase inversion electric current of described simulation protection threshold signal and collection.
4. universal frequency converter real-time data acquisition according to claim 2 and pulse distribution system, it is characterized in that, when described pulse distribution plate is copped wave pulse control board, comprise first optical fiber interface, programmable logic device, ADC, DAC, filtering and ratio circuit, comparison circuit, filtering adjustment circuit and second optical fiber interface;
Described filtering and ratio circuit carry out being sent to described ADC after the filtering ratio is nursed one's health to three road chopper currents from transducer and carry out analog-to-digital conversion;
Numeral three road chopper currents after described ADC will change are sent to described programmable logic device to carry out and goes here and there conversion;
Described filtering is adjusted and will be sent to described programmable logic device after circuit will be nursed one's health by the pulse feedback signal of second optical fiber interface feedback;
The pulse feedback signal after serial three road chopper currents after described programmable logic device will be changed, the conditioning and the fault message of copped wave module send to the optical-fibre communications plate by first optical fiber interface and optical fiber successively;
Described programmable logic device will send to power drive unit through the filtering adjustment circuit and second optical fiber interface after will being converted to parallel signal from the copped wave control impuls of optical-fibre communications plate successively;
Described programmable logic device will be gone here and there and change from the copped wave overcurrent numerical protection threshold value of universal frequency converter control unit; be sent to DAC then and carry out digital-to-analogue conversion; simulation protection threshold signal after DAC will change is sent to comparison circuit, and comparison circuit compares generation copped wave over-current signal with the chopper current of described simulation protection threshold signal and collection.
5. universal frequency converter real-time data acquisition according to claim 2 and pulse distribution system, it is characterized in that, when described pulse distribution plate is the commutating pulse control board, comprise first optical fiber interface, microprocessor, ADC, DAC, filtering ratio circuit, comparison circuit and conditioning drive circuit;
Described filtering ratio circuit carries out being sent to described ADC after filtering and the ratio conditioning to voltage on line side and the current on line side from transducer;
Voltage on line side after described ADC will nurse one's health and current on line side are converted to digital signal and are sent to described microprocessor;
Described microprocessor is converted to serial signal with the digital signal of voltage on line side and current on line side and sends to the universal frequency converter control unit by first optical fiber interface, optical fiber and optical-fibre communications plate successively; The universal frequency converter control unit carries out the algorithm computing by described voltage on line side and current on line side, produces commutating pulse, and commutating pulse is sent to described microprocessor through described optical-fibre communications plate, optical fiber and first optical fiber interface successively; Described microprocessor is gone here and there commutating pulse and is changed, and sends to power drive unit through the conditioning drive circuit then;
Described universal frequency converter control unit sends to described programmable logic device by the described optical-fibre communications plate and first optical fiber interface successively with the protection threshold value of net side overcurrent and goes here and there and change; Parallel signal after described programmable logic device will be changed sends to DAC and carries out digital-to-analogue conversion; simulation protection threshold value after DAC will change is sent to comparison circuit, and comparison circuit compares generation net side over-current signal with the current on line side of described protection threshold value and collection.
6. universal frequency converter real-time data acquisition according to claim 2 and pulse distribution system, it is characterized in that, when described pulse distribution plate is the ground connection check-out console, comprise first optical fiber interface, programmable logic device, ADC, DAC, filtering ratio circuit and comparison circuit;
Send to described ADC after intermediate dc electric current, middle dc voltage and the middle voltage of filtering ratio and comparison circuit autobiography sensor in future is nursed one's health and carry out digital-to-analogue conversion;
Digital intermediate dc electric current, middle dc voltage and middle voltage after described ADC will change sends to described programmable logic device to carry out and goes here and there conversion;
Serial signal after described programmable logic device will be changed sends to described universal frequency converter control unit by described first optical fiber interface and optical-fibre communications plate successively;
Described universal frequency converter control unit sends to described programmable logic device by the described optical-fibre communications plate and first optical fiber interface successively with the protection threshold value of the protection threshold value of the protection threshold value of earth fault, intermediate dc overcurrent and intermediate voltage overvoltage and goes here and there and change; Parallel signal after described programmable logic device will be changed sends to DAC and carries out digital-to-analogue conversion; simulation protection threshold value after DAC will change is sent to comparison circuit, and comparison circuit compares generation over-voltage and over-current and earth fault signal with the signal of described protection threshold value and collection.
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| CN106527272A (en) * | 2016-12-01 | 2017-03-22 | 中国东方电气集团有限公司 | Power electronic general control system |
| CN111614401A (en) * | 2020-05-20 | 2020-09-01 | 中车株洲电力机车研究所有限公司 | Power unit communication expansion device |
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2010
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102303109A (en) * | 2011-08-31 | 2012-01-04 | 重庆溢希恩真节能电力设备有限公司 | Automatic releasing agent proportioning economizer for die casting machine |
| CN102510092A (en) * | 2011-12-19 | 2012-06-20 | 国网电力科学研究院 | Distributed real-time control unit of wind power converter |
| CN106527272A (en) * | 2016-12-01 | 2017-03-22 | 中国东方电气集团有限公司 | Power electronic general control system |
| CN106527272B (en) * | 2016-12-01 | 2023-10-03 | 中国东方电气集团有限公司 | Universal control system for power electronics |
| CN111614401A (en) * | 2020-05-20 | 2020-09-01 | 中车株洲电力机车研究所有限公司 | Power unit communication expansion device |
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