CN202076935U - Cascade type main controller of high-voltage frequency converter - Google Patents
Cascade type main controller of high-voltage frequency converter Download PDFInfo
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- CN202076935U CN202076935U CN2011201057494U CN201120105749U CN202076935U CN 202076935 U CN202076935 U CN 202076935U CN 2011201057494 U CN2011201057494 U CN 2011201057494U CN 201120105749 U CN201120105749 U CN 201120105749U CN 202076935 U CN202076935 U CN 202076935U
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Abstract
The utility model discloses a cascade type main controller of a high-voltage frequency converter, which is characterized by adopting distributed design and comprising two parts, namely a main control panel plug-in module and a peripheral auxiliary plug-in module of the high-voltage frequency converter. By adopting the distributed design, the main control panel plug-in module and the peripheral auxiliary plug-in module are arranged outside a chassis, wherein the main control panel plug-in module of the high-voltage frequency converter realizes control, data transfer and upper computer communication, the peripheral auxiliary plug-in module is matched with a peripheral auxiliary switch-over plug-in module for use, so as to complete the functions such as collection of various signals and driving of power electronic devices, and the peripheral auxiliary switch-over plug-in module completes isolation and conversion of alternating current value, direct current value and switching value. The cascade type main controller not only can set appropriate frequency conversion and adjustment way according to different load requirements, but also can conveniently realize the expansion of different control modes, and control system functions to have expandability, so as to promote the technical level and operation reliability and flexibility of a system, improve the operation efficiency of equipment, and reduce the maintenance cost.
Description
Technical field
The utility model belongs to the control technology of high voltage converter, is specifically related to a kind of master controller of cascaded high-voltage frequency converter.
Background technology
At present, the whole world perplexs for energy scarcity, and the energy situation of China is especially severe.Along with fast development of Chinese economy, the energy becomes the bottleneck of restriction economic growth, and saving consumption reduction also just becomes the problem of country and enterprise's serious concerns.Current, the macro policy type harmonious society that advocates thriftiness of country, the research and development of energy-saving product has obtained paying close attention to widely.High voltage converter with desirable energy-saving effect and speed adjusting performance causes showing great attention to of responsible departments of the government and each high energy-consuming enterprises, and frequency conversion becomes first-selected energy-conserving product.
In the tandem type high voltage converter, controller is basic component part, is the core of frequency converter.Its main task be finish motor control strategy, based on the serial communication of optical fiber, communicate by letter with host computer, and the input and output processing of signals such as control analog quantity, digital quantity, switching value etc.
At present, the controller of tandem type high voltage converter adopts integrated form more, and all control circuits are integrated on the complete circuit board, has comprised the processing of motor control strategy, communication and various input/output signals.This kind controller architecture is simple, brought into play important effect in the Frequency Converter Control in early days, along with the development of converter technique, control system to be had higher requirement, the integrated form control system is because its circuit structure is inflexible, poor compatibility, can't satisfy the control needs, simultaneously, integrated form control system on-site maintenance difficulty, the system expandability is bad, causes the unreasonable distribution of resource.
Find to have the following correlation technique document by retrieval:
1, number of patent application is: 201010142328.9, name is called the Chinese patent application of " a kind of main controller device that is used for the high voltage converter modularized design ", this patent application discloses a kind of main controller device that is used for the high voltage converter modularized design, this main controller device comprises the bus bar plate that is installed in the cabinet, also comprises power insert, primary processor plug-in unit, analog acquisition plug-in unit, digital quantity input plug-in unit, digital quantity output inserter and man-machine interface.Described various plug-in unit, preceding termination signal, the rear end is connected with bus bar plate by plug connector respectively.The primary processor plug-in unit adopts CF card storage data and record ripple.
The deficiency of this technical scheme is: main controller device comprises the bus bar plate that is installed in the cabinet, and when the big capacity complexity of design frequency converter, when needing the expanded circuit plug-in unit, chassis space deficiency, frequency changer need redesign, poor compatibility.
2, the author is Luo Zhihui, and Nanjing Aero-Space University's Master's thesis of delivering, exercise question are " research of high-pressure frequency-conversion cascaded inverter modulation strategy "; This paper discloses high-pressure frequency-conversion cascaded inverter modulation strategy, and described high-pressure frequency-conversion cascaded inverter modulation control unit is divided into Controlled CPU plug-in unit, peripheral auxiliary two parts of patchboard.CPU card part serves as the control core with DSP, FPGA, detects the output triggering signal and finishes locking when the fault by CPLD simultaneously, and triggering signal is converted to light signal rear drive IGCT; Peripheral auxiliary plug-in is finished the isolation and the conversion of DC quantity, of ac and switching value.
The technical scheme that above-mentioned paper proposes, existing deficiency is: high-power switch device is selected IGCT for use, IGCT is because the peripheral components number is big, the fault of system is many, the cost height, maintenance cycle is long, expense is high, and because the device complexity, technical staff's requirement to maintenance is very high, causes frequency converter difficult in maintenance.
Therefore, the prior art scheme all comes with some shortcomings, in order to solve problems of the prior art, the cascaded high-voltage frequency converter master controller of a kind of distributed design of necessary proposition.
The utility model content
At the deficiencies in the prior art, the utility model provides a kind of master controller of cascaded high-voltage frequency converter of distributed design, make control system set suitable variable frequency adjustment mode according to different load requests, and can realize the expansion of different control modes easily, the control system function has extensibility, promote the technical merit of system and operational reliability, flexibility, improved equipment operating efficiency, reduced maintenance cost.
The technical solution adopted in the utility model is: a kind of cascaded high-voltage frequency converter master controller, comprise two parts of high voltage converter master board plug-in unit and peripheral auxiliary plug-in, adopt distributed design, master board plug-in unit and peripheral auxiliary plug-in are arranged in outside the cabinet, described high voltage converter master board plug-in unit is realized control, data transmit and upper machine communication, described peripheral auxiliary plug-in is used with peripheral auxiliary patchboard, finish the collection of various signals and the functions such as driving of power electronic device, wherein peripheral auxiliary patchboard is finished of ac, the isolation of DC quantity and switching value and conversion.
It is the structure of control core that described master board insert design can adopt with DSP, FPGA and CPLD, DSP and FPGA cooperatively interact and finish the realization of control strategy and modulator approach, CPLD mainly finishes the detection and the locking of triggering signal, in addition, also can expand EPROM on the master board plug-in unit, SRAM, all kinds of storage chips such as NVRAM and EEPROM.
Described peripheral auxiliary plug-in can comprise analog quantity input and output plug-in unit, switching value input and output plug-in unit, power supply processing plug-in unit etc.
The auxiliary patchboard in described periphery can comprise interchange plug-in unit, direct current plug-in unit, switching value plug-in unit etc., finishes the isolation conversion of various input/output signals, and the signaling interface function is brought together.
Communicate by optical fiber between described master board plug-in unit and the peripheral auxiliary plug-in, communicate by optical fiber between peripheral auxiliary plug-in and the peripheral auxiliary patchboard, the optical-fibre communications of main wiring board has extensibility.
Good effect of the present utility model is:
(1) adopt distributed design, bus bar plate is arranged in beyond the cabinet, has saved chassis space, also makes design of Controller more flexible, can design the complicated frequency converter controller of big capacity as required.
(2) adopting with DSP, FPGA and CPLD is the structure of control core, and realizes the storage chip expansion, makes this controling appliance that functional expansionary be arranged, and hardware platform can be supported the various control strategy, and realization is convenient.The hardware designs function of control unit is well defined, and the program module of revising corresponding units just can be finished the expansion of controlled function.
(3) use modular insert, when system's part has fault or needs upgrading, can accurately locate, only need to change the corresponding function plug-in unit and get final product, do not need all to change whole master controller, make the user benefit maximization.
(4) bus definition of standard will make system expand and become easy, economical.When needs increase new function, only need to make new feature card according to the bus definition standard, change drive software and optical fiber interface, system just can discern automatically, is convenient to the expansion that system newly adds function.
(5) optical-fibre communications between this master controller and auxiliary plug-in, power cell, complete electrical isolation, fail safe that system's tool is high and antijamming capability.
Below in conjunction with the drawings and specific embodiments the utility model is further set forth.
Description of drawings
Fig. 1 is the structure chart of frequency converter master controller described in the utility model.
Fig. 2 is the composition diagram of frequency converter master controller described in the utility model.
Fig. 3 is frequency converter master controller and a power cell connection diagram under the utility model.
Embodiment
As shown in Figure 1, a kind of cascaded high-voltage frequency converter master controller, comprise two parts of high voltage converter master board plug-in unit and peripheral auxiliary plug-in, adopt distributed design, master board plug-in unit and peripheral auxiliary plug-in are arranged in outside the cabinet, described high voltage converter master board plug-in unit is realized control, data transmit and upper machine communication, described peripheral auxiliary plug-in is used with peripheral auxiliary patchboard, finish the collection of various signals and the functions such as driving of power electronic device, wherein peripheral auxiliary patchboard is finished of ac, the isolation of DC quantity and switching value and conversion.
Described high voltage converter master control borad plug-in unit is the core of controller, except the turn-on and turn-off of high-power switch device IGBT are controlled, also will satisfy the Control Parameter of control strategy calculates, gather the electric parameter of governing system operation in real time, with the optimization of realization control strategy and the real-time control of running status, finish and upper strata machine and accessory plate, power cell between data communication, the state of record controls operation and the logout when breaking down.It is the structure of control core that the master board insert design has adopted with DSP, FPGA and CPLD, and DSP and FPGA cooperatively interact and finish the realization of control strategy and modulator approach.By DSP finish data acquisition, analytical calculation, upper layer communication and the time complexity height such as interocclusal record, operation that amount of calculation is big, for the design of simplifying its software, improve the program extensibility, the DSP program has adopted modular design method; FPGA is responsible for the pulse triggering signal that calculates and generate the PWM modulation specially, and the FPGA program realizes the generation of chip internal hardware configuration.CPLD mainly finishes the detection and the locking of triggering signal.The high voltage converter master controller also has functional expansionary, on the basis that does not change the hardware platform structure, can different control strategy and the modulator approaches of realization.Finish exchanges data by the RS485 serial communication between control unit and the upper strata machine.The mass data such as definite value that control unit storage such as control program, logout, upper strata machine transmit, and the memory requirement difference of each data, only can not satisfy application requirements by the storage of chip internal space, expanded EPROM in the master board, SRAM, NVRAM and EEPROM are used to deposit program, ephemeral data, logout etc.The control signal of control unit output converts light signal to and triggers IGBT by optical fiber, rapid and reliable triggering control and the status monitoring of finishing IGBT.
As shown in Figure 2, described peripheral auxiliary plug-in also comprises the high-tension measurement plug-in unit, drives plug-in units such as protection plug-in unit and light expansion except that the analog quantity of necessity is handled plug-in unit, digital quantity is handled plug-in unit, the IGBT drive plug.Analog quantity is handled the high accuracy isolation measurement that plug-in unit is finished the frequency converter input/output signal, also realizes the measurement and the control of slow analog signals such as temperature, motor speed in the frequency converter cabinet; The digital quantity plug-in unit is mainly used in the control of electric parameters signal and all kinds of non-electric quantity signals.For the high-pressure section and the low-pressure section that make signal are fully isolated, strengthen interference free performance, improve the reliability of processing of circuit, analog processing circuit has adopted high-performance isolation amplifier that signal is isolated, digital quantity is handled plug-in unit and is adopted optocoupler and filter circuit to isolate interference, when circuit design, has taken into full account the characteristics of interference source, special design has been carried out in isolation and filtering, and system EMC index can design according to industrial A grade standard fully.
The auxiliary patchboard in described periphery comprises interchange plug-in unit, direct current plug-in unit, switching value plug-in unit etc., finish the isolation conversion of various input/output signals, the signaling interface function is brought together, make things convenient for design management, and make the Controlled CPU pin function single, compact conformation.Adopted special patchboard can better realize isolating, helped the separation of strong and weak electricity, reduced the interference of signal control section.For the strong and weak electricity that helps the signaling interface passage separates, improve control plug-in unit antijamming capability, adopt special patchboard to finish the isolation conversion of signal, make the Controlled CPU dongle configuration compact more.。
The optical-fibre communications of described high voltage converter master board plug-in unit has extensibility, and the master board plug-in unit can directly be expanded by the plug interface, and use is simple, convenient, saves cost.Carry out communication by optical fiber between peripheral auxiliary plug-in of high voltage converter and the peripheral auxiliary patchboard, reduce long-distance transmissions and disturb, isolated high-voltage, easy to use, greatly reduce system cost.Above-mentioned functions plug-in unit in this device both can use separately, use also capable of being combined.Really embodied flexible configuration, the characteristics of combined and instant.
Claims (5)
1. cascaded high-voltage frequency converter master controller, it is characterized in that comprising two parts of high voltage converter master board plug-in unit and peripheral auxiliary plug-in, adopt distributed design, master board plug-in unit and peripheral auxiliary plug-in are arranged in outside the cabinet, described high voltage converter master board plug-in unit is realized control, data transmit and upper machine communication, described peripheral auxiliary plug-in is used with peripheral auxiliary patchboard, finish the collection of various signals and the driving function of power electronic device, wherein peripheral auxiliary patchboard is finished of ac, the isolation of DC quantity and switching value and conversion.
2. a kind of cascaded high-voltage frequency converter master controller according to claim 1, it is characterized in that it is the structure of control core that the master board insert design can adopt with DSP, FPGA and CPLD, DSP and FPGA cooperatively interact and finish the realization of control strategy and modulator approach, CPLD mainly finishes the detection and the locking of triggering signal, in addition, also can expand EPROM on the master board plug-in unit, SRAM, NVRAM and EEPROM storage chip.
3. described a kind of cascaded high-voltage frequency converter master controller according to claim 1 and 2 is characterized in that described peripheral auxiliary plug-in can comprise analog quantity input and output plug-in unit, switching value input and output plug-in unit, power supply processing plug-in unit.
4. a kind of cascaded high-voltage frequency converter master controller according to claim 3, it is characterized in that the auxiliary patchboard in described periphery can comprise interchange plug-in unit, direct current plug-in unit, switching value plug-in unit, finish the isolation conversion of various input/output signals, and the signaling interface function is brought together.
5. a kind of cascaded high-voltage frequency converter master controller according to claim 4, it is characterized in that communicating by optical fiber between described master board plug-in unit and the peripheral auxiliary plug-in, communicate by optical fiber between peripheral auxiliary plug-in and the peripheral auxiliary patchboard, the optical-fibre communications of main wiring board has extensibility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2011201057494U CN202076935U (en) | 2011-04-12 | 2011-04-12 | Cascade type main controller of high-voltage frequency converter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011201057494U CN202076935U (en) | 2011-04-12 | 2011-04-12 | Cascade type main controller of high-voltage frequency converter |
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| CN202076935U true CN202076935U (en) | 2011-12-14 |
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| CN2011201057494U Expired - Lifetime CN202076935U (en) | 2011-04-12 | 2011-04-12 | Cascade type main controller of high-voltage frequency converter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891501A (en) * | 2012-09-25 | 2013-01-23 | 上海交通大学 | Distributed control system of high-power current transformer |
| CN102938565A (en) * | 2012-09-28 | 2013-02-20 | 上海交通大学 | Large-scale parallel system-based distributed communication system and control method thereof |
| CN103176419A (en) * | 2013-03-14 | 2013-06-26 | 华北电力大学 | DSP (digital signal processing) control board compatible with TMS320F28x series |
-
2011
- 2011-04-12 CN CN2011201057494U patent/CN202076935U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102891501A (en) * | 2012-09-25 | 2013-01-23 | 上海交通大学 | Distributed control system of high-power current transformer |
| CN102891501B (en) * | 2012-09-25 | 2014-12-10 | 上海交通大学 | Distributed control system of high-power current transformer |
| CN102938565A (en) * | 2012-09-28 | 2013-02-20 | 上海交通大学 | Large-scale parallel system-based distributed communication system and control method thereof |
| CN103176419A (en) * | 2013-03-14 | 2013-06-26 | 华北电力大学 | DSP (digital signal processing) control board compatible with TMS320F28x series |
| CN103176419B (en) * | 2013-03-14 | 2015-10-21 | 华北电力大学 | The DSP control panel of compatible TMS320F28x series |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20111214 |