CN202906834U - Track traffic vehicle air-conditioning frequency converter based on digital signal processor (DSP) - Google Patents
Track traffic vehicle air-conditioning frequency converter based on digital signal processor (DSP) Download PDFInfo
- Publication number
- CN202906834U CN202906834U CN 201220537226 CN201220537226U CN202906834U CN 202906834 U CN202906834 U CN 202906834U CN 201220537226 CN201220537226 CN 201220537226 CN 201220537226 U CN201220537226 U CN 201220537226U CN 202906834 U CN202906834 U CN 202906834U
- Authority
- CN
- China
- Prior art keywords
- circuit
- dsp
- frequency converter
- converter based
- digital signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Inverter Devices (AREA)
Abstract
The utility model discloses a track traffic vehicle air-conditioning frequency converter based on a DSP, comprising a three-phase asynchronous motor, a DSP control circuit and a main circuit for supplying the three-phase asynchronous motor with a work power supply of which the frequency and voltage are variable. The main circuit employs an AC-DC-AC voltage type frequency converter structure, and the DSP control circuit comprises the DSP and a driving circuit connected with the DSP and used for inputting six PMWs to an inverter circuit, a current detection circuit for detecting an output current signal of the main circuit and a signal conditioning circuit for detecting the fault of the inverter circuit to adjust. The track traffic vehicle air-conditioning frequency converter based on the DSP of the utility model solves the problem that the train air-conditioning energy loss is huge, has the characteristics of strong universality, strong reliability, etc., can be widely used in the industrial control fields which have higher energy-saving requirements and can be in automatic stepless speed regulation, such as subway train, railway train, city track traffic vehicle, etc., and is suitable for being popularized in the railway industry.
Description
Technical field
The utility model relates to vehicle air conditioning converter technology field, particularly relates to a kind of rail traffic vehicles air conditioning frequency converter based on DSP.
Background technology
City Rail Transit System power consumption is large, and operating cost is high, and the data that the Chinese Academy of Engineering executes Zhong Heng academician to be provided show, one 20 kilometers rail line, and every year on average power consumption reaches 8,000 ten thousand kilowatt hours.Wherein, air-conditioning system is one of main dissipative system of rail traffic vehicles.According to the energy consumption statistic data analysis of present operating line, the railway traffic vehicle amount is 50～60% of total electricity consumption.Wherein, account for 50% of vehicular traffic energy consumption take air-conditioning as main auxiliary system energy consumption.Energy savings and environmental protection become the theme of sustainable development gradually.With regard to train fixed frequency air conditioner system, exist operating condition stable, energy consumption is large, can not satisfy the deficiencies such as passenger's comfortableness requirement, adopts convertible frequency air-conditioner, can alleviate to a certain extent these deficiencies.
By Frequency Converter Control compressor rotary speed and ventilation blower rotating speed, realize the automatic control of all functions of motion of air-conditioning unit.During start, the car internal loading is large, unit energy carries out cooling or heating with maximum power rapidly, vehicle interior temperature is got a desired effect, after in case vehicle interior temperature reaches the temperature that sets, air-conditioning system is regulated compressor, ventilation blower rotating speed and refrigerant flow automatically, and vehicle interior temperature is remained in the constant scope.The frequency of supply of air-conditioning unit is 50 Hz, and the running frequency of unit generally is in the situation that be lower than 50 Hz and constantly change after the frequency conversion, has so not only saved the energy but also has improved efficient.Variable frequency control is continuous operational mode, has reduced the start-stop time of compressor, has not only reduced starting current but also has prolonged life-span of unit.In addition, can also realize the centralized control of full row coach air conditioner, the convenient operation management.
The utility model content
The purpose of this utility model is to provide a kind of rail traffic vehicles air conditioning frequency converter based on DSP that can be applicable in subway, light rail train and City Rail Transit System, can realize the variable frequency regulating speed control of convertible frequency air-conditioner, realize the air-conditioning converting operation, thereby reach energy-conservation effect.
For realizing above-mentioned purpose, the technical scheme that the utility model adopts is as follows:
A kind of rail traffic vehicles air conditioning frequency converter based on DSP comprises threephase asynchronous machine, DSP control circuit and the main circuit that the working power of frequency, voltage variable is provided for described threephase asynchronous machine under the control of described DSP control circuit; Described main circuit adopts AC-DC-AC voltage frequency converter structure, comprises the rectification filter filter circuit and the inverter circuit that connect successively; Described DSP control circuit comprise the DSP digital signal processor and be connected with described DSP digital signal processor input the drive circuit of six road PMW ripples to described inverter circuit, detect described main circuit output current signal current detection circuit and detect the signal conditioning circuit that the fault of described inverter circuit is regulated.
Described DSP digital signal processor comprises cpu central processing unit and the PMW that is connected with described cpu central processing unit produces circuit, A/D converter, I/O interface and with the communication interface circuit of upper machine communication; Described drive circuit connects described PMW and produces circuit, and described current detection circuit is connected with described cpu central processing unit by described A/D converter, and described signal conditioning circuit is connected with described cpu central processing unit by the PDPINTA pin.
Described I/O interface is connected with data display equipment by display circuit.
Described data display equipment is the LED charactron.
Described current detection circuit adopts Hall current sensor.
Described current rectifying and wave filtering circuit adopts the uncontrollable rectifier bridge module of three-phase to carry out rectification, and described inverter circuit adopts intelligent power module.
The utility model has good sound attitude speed adjusting performance by adopting the DSP bank of digital signal processors to become control circuit to consist of the frequency conversion control circuit of vehicle air conditioning frequency conversion, has solved the huge problem of train air-conditioning energy consumption, is adapted at promoting in the railway systems.
Description of drawings
The rail traffic vehicles air conditioning frequency converter structural representation based on DSP that Fig. 1 provides for the utility model embodiment;
The circuit theory diagrams of filter circuit in the current rectifying and wave filtering circuit that Fig. 2 provides for the utility model embodiment;
The circuit diagram of the IPM inversion module that Fig. 3 provides for the utility model embodiment;
The structural representation of the DSP control circuit that Fig. 4 provides for the utility model embodiment;
The current detection circuit that Fig. 5 provides for the utility model embodiment and the circuit diagram of signal conditioning circuit;
The circuit diagram of the display circuit that Fig. 6 provides for the utility model embodiment;
The circuit diagram of the communication interface circuit that Fig. 7 provides for the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
Referring to shown in Figure 1, a kind of rail traffic vehicles air conditioning frequency converter based on DSP comprises threephase asynchronous machine, DSP control circuit and the main circuit that the working power of frequency, voltage variable is provided for described threephase asynchronous machine under the control of described DSP control circuit; Described main circuit adopts AC-DC-AC voltage frequency converter structure, comprises the rectification filter filter circuit and the inverter circuit that connect successively; Described DSP control circuit comprise the DSP digital signal processor and be connected with described DSP digital signal processor input the drive circuit of six road PMW ripples to described inverter circuit, detect described main circuit output current signal current detection circuit and detect the signal conditioning circuit that the fault of described inverter circuit is regulated.Described DSP control circuit is responsible for the control of whole system and concrete algorithm practical function, finishes voltage and current signal and detects, the demonstration of image data and the DSP digital signal processor function such as communicate by letter with the PC machine.
Referring to shown in Figure 1, the PMW generation circuit that described DSP digital signal processor comprises cpu central processing unit and is connected with described cpu central processing unit, A/D converter, I/O interface and the communication interface circuit that carries out communication with host computer; Described drive circuit connects described PMW and produces circuit, and described current detection circuit is connected with described cpu central processing unit by described A/D converter, and described signal conditioning circuit is connected with described cpu central processing unit by the PDPINTA pin.
Described host computer is the PC computer.
Referring to shown in Figure 1, described I/O interface is connected with data display equipment by display circuit.
Described data display equipment is the LED charactron.
Described current detection circuit adopts Hall current sensor.
Described current rectifying and wave filtering circuit adopts the uncontrollable rectifier bridge module of three-phase to carry out rectification, and described inverter circuit adopts intelligent power module, the large capacitor filtering of intermediate dc link utilization.Described PMW produces circuit and consists of the drive circuit of described intelligent power module with described drive circuit.
Described rectification circuit adopts the rectifier bridge structure, and described rectifier bridge is comprised of four rectifier diodes, and 380 volts of alternating currents are pulsed through the voltage of the later output of described rectifier bridge rectification; In addition, all make direct voltage produce pulsation because described inverter circuit produces the variation of pulsating current and load, in order to obtain level and smooth direct current, must add filter circuit at rectification output end.Normally incorporate large electric capacity at rectification output end.Filter capacitor not only can the filtering rectification voltage ripple of output, also between described rectification circuit and inverter circuit, play the lotus root effect, to eliminate the phase mutual interference, this plays certain energy storage effect with regard to necessary reactive power being provided for the threephase asynchronous machine as inductive load.
Filter capacitor is the bigger the better in theory, the general withstand voltage electrolytic capacitor filter of large capacity that adopts, shown in Fig. 1 ~ 2, among the utility model embodiment, select electric capacity E1, the E2 series connection of 4 680uF, 400V, E3, E4 series connection, and then in parallel, carry out filtering, equivalence is the electric capacity of the 680uF of a withstand voltage 800V.The resistance R 136, R137, R138, the R139 that are connected in parallel on the electric capacity both sides are equalizing resistance, because the parameter of each electric capacity is incomplete same, this equalizing resistance makes the capacitance partial pressure of series connection identical, provide discharge loop to electric capacity simultaneously when power remove.The selection resistance of those resistance is 100K Ω.
With reference to shown in Figure 3; described inverter circuit is selected intelligent power module; adopt the intelligent power module (PM25RSB-120) of Mitsubishi as power device; this module has comprised seven IGBT; six fly-wheel diodes; gate driver circuit, logic control circuit and under-voltage, overcurrent, short circuit, the protective circuit such as overheated.It is 5 terminals that the main circuit of this module partly is divided into, i.e. dc voltage input end P, N and three-phase alternating voltage output U, V, W; Control circuit partly has 15 terminals, is used for the pwm signal input, fault-signal output and driving power etc.Driving power be 4 groups independently+the 15V power supply, the PWM signal that described DSP digital signal processor generates by the photoelectric coupled device isolation after this intelligent object of input IPM.
With reference to shown in Figure 4, described DSP control circuit comprises DSP digital signal processor and the power supply supervisory circuit that is connected with described DSP digital signal processor, clock circuit, reset circuit, JTAG emulation interface, level-conversion circuit, program storage RAM, data storage RAM and EEPROM, realizes the vector control of threephase asynchronous machine (the phase asynchronous compressor of air-conditioning).
Among the utility model embodiment, described DSP digital signal processor adopts the TMS320LF2407A of the C2000 series of TI company; Adopt the TPS7333 power supply chip with the outside provide+the 5V direct voltage is converted to the DSP digital signal processor required+3.3V voltage; The outer 20MHz crystal that selects, software put in the SCSR1 register CLKPS0 ~ the CLKPS2 position is 001, namely external clock is carried out 2 frequencys multiplication, system clock frequency is 40MHz; Described JTAG emulation interface links to each other with the PC machine by ICETEK-5100 USB2.0 simulator, can carry out emulation, debugging with CCS software to program at the PC machine; Extend out 64k word program storage RAM chip, model is CY7C1021, by the AND circuit logic it is shared to be program RAM and data RAM, and low 32k word is defined as data space, and address realm is 0x0000 ~ 0x7FFF; High 32k word is defined as the program space, and address realm is 0x8000 ~ 0xFFFF; Owing to the suitable supply power voltage of DSP digital signal processor is+3.3V, between external device and DSP digital signal processor, adopt the 74ALVC16254 chip and carry out data buffering and level conversion, guarantee the smooth work of each device.
With reference to shown in Figure 5, this illustrates the circuit diagram of the utility model embodiment current detection circuit and signal conditioning circuit.Described current detection circuit employing Hall-type current sensor comes the current signal in the testing circuit.Use hall device and magnetic compensation principle to detect, can detect the random waveform electric current, such as direct current, interchange and impulse waveform etc., secondary current can reflect the primary current waveform truly, can also measure the current transient peak value, and ordinary electric current mutual-inductor generally is only applicable to measure the sine wave of 50Hz; And the linearity of Hall-type current sensor, dynamic property and antijamming capability also are better than general current transformer.Among the utility model embodiment, the current detecting chip selects the closed loop Hall current sensor QBC25SYA of Nanjing strong energy Sensotech Ltd. to detect electric current, its operating voltage is ± 15V, can measure ± electric current between the 25A, the maximum of output current is 20mA, the measuring frequency wide ranges, the response time is short.With 10 A/D transducers, the fastest change-over time of each A/D transducer is based on the Speed Regulation by Changing Frequency on Three phase Asynchionous Motor system research and design 375ns of DSP in the described DSP digital signal processor.When detecting the stator current of motor, the amount that need to carry out the A/D conversion is the two-way input current, therefore needs 2 channel parallels to convert the transmission of signal.Because the reference voltage of control chip I/O mouth is 3.3V, input signal can only be the amount between 0 ~ 3.3V, an of ac and Hall current sensor detects, so through behind the transducer, be offset and be transformed in the A/D converter that 0 ~ 3.3V is input to described DSP digital signal processor.
With reference to shown in Figure 6, the figure shows the circuit of display circuit in the control circuit of the described DSP of the utility model embodiment.This display circuit comprises 4 common cathode LED charactron SR420561K, and display mode adopts dynamic scan to show, is responsible for showing motor actual measurement rotating speed.The LED charactron is driven by Multi-bit LED display driver MAX7219, MAX7219 is the Multi-bit LED display driver of a high-performance low price, its interface adopts popular synchronous serial Peripheral Interface SPI, can drive simultaneously 8 LED, include 8 display random access memories and 6 special function registers in its sheet, can make things convenient for addressing.The serial peripheral module SPI of DSP be responsible for and MAX7219 between carry out data communication.MAX7219 adopts the serial addressing mode, includes the address of RAM in the MAX7219 in the serial data that transmits.Requirement according to sequential, DSP sends 16 bits the DIN end of MAX7219 by turn, DIN must be effectively before the CLK rising edge arrives, and at each rising edge of CLK, the DIN port data is moved in 16 bit serial registers of MAX7219 inside by turn by serial.If the data that move at first are D15, the data that move at last are D0, and the data that then move into 16 bit serial registers are D15 ~ D0.In order selectively data to be write 8 display random access memories or 6 special function registers, D8 among D0 ~ D15 ~ D11 position is as the address of RAM or special function register, and D0 ~ D7 position is as the demonstration data or the control word that write.The SPI mouth of TMS320LF2407A adopts holotype, and SPICLK provides the serial communication clock.SPISIMO moves into the serial under clock signal of 16 bit data at the DIN end of MAX7219, before moving into data, SPISTE is necessary for low, SPISTE was for high after 16 bit data had been moved, in MAX7219, the SPI mouth can come the Configuration above-mentioned functions by its corresponding register with data loading.Can regulate each section of LED electric current by resistance R 20, thereby come control display brightness.Electric capacity E4 and C4 connect the power end decoupling, and DIG0 ~ DIG3 of LED is the digital drive line, suck electric current from display.SEGA ~ SEGDP provides the demonstration electric current for each stroke section.
With reference to shown in Figure 7, the figure shows the circuit of the communication interface circuit of the DSP control circuit that the utility model embodiment provides.The driving chip MAX232 that comprises the RS-232 standard.Serial communication interface SCI module is arranged in the DSP digital signal processor, by realizing asynchronous communication between this SCI module and the upper PC machine serial ports, adopt the driving chip MAX232 that meets the RS-232 standard in the hardware circuit.The SCI module pin (SCIRXD1 and SCITXD1) of DSP digital signal processor enters MAX232 behind the 74ALVC16254 chip, link to each other with upper PC machine by 9 pin DB connectors again.Host computer adopts Visual Basic to write communication interface.
The functions such as given and system failure demonstration of rotating speed (frequency) and magnetic flux when host computer is responsible for transmission, the speed governing of system starting and halt command; Simultaneously, after the realization PC control, can monitor the operating mode of motor speed regulation system easily, create condition for realizing system intelligent and system extension.
Frequency converter described in the utility model is applicable to the train air-conditioning variable frequency regulating speed control, possess simultaneously space vector control and V|F control function, can control flexibly the stepless speed control of frequency-changeable compressor, solved the huge problem of train air-conditioning energy loss, have the characteristics such as highly versatile, reliability be strong, can be widely used in that subway train, railroad train and urban rail transit vehicles etc. are energy-conservationly had relatively high expectations, the automatic industrial control field of stepless time adjustment, be adapted at promoting in the railway systems.
The above only is preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.
Claims (6)
1. rail traffic vehicles air conditioning frequency converter based on DSP, it is characterized in that, comprise threephase asynchronous machine, DSP control circuit and the main circuit that the working power of frequency, voltage variable is provided for described threephase asynchronous machine under the control of described DSP control circuit; Described main circuit adopts AC-DC-AC voltage frequency converter structure, comprises the rectification filter filter circuit and the inverter circuit that connect successively; Described DSP control circuit comprise the DSP digital signal processor and be connected with described DSP digital signal processor input the drive circuit of six road PMW ripples to described inverter circuit, detect described main circuit output current signal current detection circuit and detect the signal conditioning circuit that the fault of described inverter circuit is regulated.
2. a kind of rail traffic vehicles air conditioning frequency converter based on DSP according to claim 1, it is characterized in that, described DSP digital signal processor comprises cpu central processing unit and the PMW that is connected with described cpu central processing unit produces circuit, A/D converter, I/O interface and with the communication interface circuit of upper machine communication; Described drive circuit connects described PMW and produces circuit, and described current detection circuit is connected with described cpu central processing unit by described A/D converter, and described signal conditioning circuit is connected with described cpu central processing unit by the PDPINTA pin.
3. a kind of rail traffic vehicles air conditioning frequency converter based on DSP according to claim 2 is characterized in that, described I/O interface is connected with data display equipment by display circuit.
4. a kind of rail traffic vehicles air conditioning frequency converter based on DSP according to claim 3 is characterized in that, described data display equipment is the LED charactron.
5. a kind of rail traffic vehicles air conditioning frequency converter based on DSP according to claim 1 and 2 is characterized in that, described current detection circuit adopts Hall current sensor.
6. each described a kind of rail traffic vehicles air conditioning frequency converter based on DSP according to claim 1 ~ 4, it is characterized in that, described current rectifying and wave filtering circuit adopts the uncontrollable rectifier bridge module of three-phase to carry out rectification, and described inverter circuit adopts intelligent power module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220537226 CN202906834U (en) | 2012-10-19 | 2012-10-19 | Track traffic vehicle air-conditioning frequency converter based on digital signal processor (DSP) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220537226 CN202906834U (en) | 2012-10-19 | 2012-10-19 | Track traffic vehicle air-conditioning frequency converter based on digital signal processor (DSP) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202906834U true CN202906834U (en) | 2013-04-24 |
Family
ID=48127452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220537226 Expired - Fee Related CN202906834U (en) | 2012-10-19 | 2012-10-19 | Track traffic vehicle air-conditioning frequency converter based on digital signal processor (DSP) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202906834U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105577016A (en) * | 2016-03-04 | 2016-05-11 | 广东美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN105634255A (en) * | 2016-01-29 | 2016-06-01 | 浙江大学宁波理工学院 | 18-pulse-based SVPWM three-phase electronic voltage regulator |
| CN112803783A (en) * | 2021-03-17 | 2021-05-14 | 北京动力源科技股份有限公司 | Digital control-based direct current converter gain modulation system |
-
2012
- 2012-10-19 CN CN 201220537226 patent/CN202906834U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105634255A (en) * | 2016-01-29 | 2016-06-01 | 浙江大学宁波理工学院 | 18-pulse-based SVPWM three-phase electronic voltage regulator |
| CN105634255B (en) * | 2016-01-29 | 2018-01-30 | 浙江大学宁波理工学院 | A kind of SVPWM Three-phase electronic pressure regulators based on 18 pulses |
| CN105577016A (en) * | 2016-03-04 | 2016-05-11 | 广东美的制冷设备有限公司 | Intelligent power module and air conditioner |
| CN112803783A (en) * | 2021-03-17 | 2021-05-14 | 北京动力源科技股份有限公司 | Digital control-based direct current converter gain modulation system |
| CN112803783B (en) * | 2021-03-17 | 2022-07-26 | 北京动力源科技股份有限公司 | Digital control-based direct current converter gain modulation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103001573B (en) | Medium voltage converter drive system | |
| CN102787974B (en) | Fully digital servo driver for AC permanent magnet synchronous motor for wind power generation pitch | |
| CN101249802B (en) | Urban rail traffic vehicle braking energy recovery system | |
| CN101863413A (en) | Energy-saving control system for permanent magnet synchronous escalator | |
| CN108900136A (en) | A kind of multiphase Frac unit electric driving control system | |
| CN204013310U (en) | Brushless dual-feed motor direct Torque Control | |
| CN102001558B (en) | Control system integrating elevator control, driving and energy feedback | |
| CN202906834U (en) | Track traffic vehicle air-conditioning frequency converter based on digital signal processor (DSP) | |
| CN201486757U (en) | Wind-driven variable pitch servo controller | |
| CN201509176U (en) | Brushless motor control system and brushless motor | |
| CN208013382U (en) | It is a kind of can electric energy feedback generator test device | |
| CN204439358U (en) | A kind of hybrid power automobile power assembly testing table | |
| CN108365788A (en) | A kind of Matrix Converter-Permanent Magnetic Synchronous Machine governing system and method based on passive coherent locating | |
| CN101320958B (en) | Asynchronously and simultaneously implementing rotor variable-frequency control system by semi-bridge inverter driving multiple electric motors | |
| CN104283437A (en) | Converter | |
| CN103098362A (en) | Power conversion apparatus, motor drive apparatus, and refrigerating and air-conditioning apparatus | |
| CN201072207Y (en) | Household and commercial DC frequency converting air-conditioner controller | |
| CN101047358B (en) | Sinusoidal DC conversion control method and equipment for one-drives-two air conditioner | |
| CN201118513Y (en) | Efficiency optimization control system for three-phase inductance electromotor | |
| CN201104351Y (en) | DC frequency converting air-conditioner compressor driving circuit | |
| CN203223360U (en) | Water pump energy-saving device of fan | |
| CN203485926U (en) | DC powered air-conditioning set of passenger train | |
| CN201915750U (en) | Integral gate operator direct drive and vector control device | |
| CN201321948Y (en) | Control device of aerogenerator | |
| CN203983751U (en) | The power distribution cabinet line structure of tunnel dedusting car |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20171019 |