CN103802841B - Electric locomotive traction control unit and control method - Google Patents
Electric locomotive traction control unit and control method Download PDFInfo
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- CN103802841B CN103802841B CN201210436252.XA CN201210436252A CN103802841B CN 103802841 B CN103802841 B CN 103802841B CN 201210436252 A CN201210436252 A CN 201210436252A CN 103802841 B CN103802841 B CN 103802841B
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Abstract
Electric locomotive traction control unit provided by the invention and control method, processed by the input to electric locomotive of the peripheral processes chip and output signal, obtain drive control signal, drive control signal is sent to fpga chip, fpga chip receives the control instruction that the dsp chip as main process chip sends simultaneously, drive control signal is carried out breakdown judge by fpga chip, when judged result be drive control signal there is not fault time, according to control instruction in electric locomotive IGBT export driving pulse.The drive control signal controlling driving pulse transmission is judged by the present invention by fpga chip, and when fpga chip judges that drive control signal is absent from fault, fpga chip sends driving pulse to IGBT, to drive IGBT to be operated；When fpga chip judges that drive control signal exists fault, FPGA interrupts sending driving pulse, it is to avoid the breaking-up to IGBT when electric locomotive catastrophic failure, such that it is able to reduce the burn-out rate of IGBT.
Description
Technical field
The present invention relates to wagon control technology, particularly relate to a kind of electric locomotive traction control unit and control method.
Background technology
Along with developing rapidly of traffic transport industry, the needing of electric locomotive is also continuously increased, but, the research about the central processing unit (CentralProcessingUnit, referred to as CPU) of electric locomotive traction control unit is relatively fewer.At present, the control model of electric locomotive traction control unit CPU is broadly divided into three classes: based on Digital Signal Processing (DigitalSignalProcessing, referred to as DSP) chip as main process chip, single-chip microcomputer is as the control model of collaborative process chip；Based on the chip of auspicious Sa (RENESAS) series as the main process chip of CPU, single-chip microcomputer is as collaborative process chip with based on the dsp chip main process chip as CPU, field programmable gate array (Field-ProgrammableGateArray, referred to as FPGA) chip is as collaborative process chip.
In actual application, based on the dsp chip main process chip as CPU in prior art, insulated gate bipolar transistor (InsulatedGateBipolarTransistor, referred to as the IGBT) problem that burn-out rate is high is there is in FPGA as the control model of collaborative process chip.
Summary of the invention
The present invention provides a kind of electric locomotive traction control unit and control method, and in order to solve based on the DSP main process chip as CPU in prior art, FPGA exists, as the control model of collaborative process chip, the problem that IGBT burn-out rate is high.
To achieve these goals, the present invention provides a kind of electric locomotive traction control unit, including:
Process as the Digital Signal Processing dsp chip of main process chip, the on-site programmable gate array FPGA chip as collaborative process chip and the input to described electric locomotive and output signal, obtain drive control signal, send described drive control signal to the peripheral processes chip of described fpga chip；
Described fpga chip includes: be used for the MPI communicated with described dsp chip, for receiving described drive control signal, described drive control signal is carried out breakdown judge, will determine that result be sent to pulse width modulation (PWM) signaling module breakdown judge module and for the judged result of described breakdown judge module be described drive control signal there is not fault time, according to the control instruction that described dsp chip is sent by described MPI, the described pwm signal module of driving pulse is exported to the insulated gate bipolar transistor IGBT in described electric locomotive；Wherein, described drive control signal is the signal instigating described pwm signal module to export described driving pulse to described IGBT according to described control instruction；
Wherein, described breakdown judge module is connected with described peripheral processes chip and described pwm signal module；Described pwm signal module is also connected with described IGBT.
Electric locomotive traction control unit as above, it is characterized in that, described peripheral processes chip includes analog digital conversion A/D module, and described drive control signal includes: the analog signals of described electric locomotive input and output is carried out the digital signal of analog digital conversion output by described A/D module；
Described fpga chip also includes: the digital signal for described A/D module is exported is filtered obtaining the first signal, and described first signal is sent to the digital filtering module of described breakdown judge module；
Described digital filtering module is connected with described A/D module and described breakdown judge module.
Electric locomotive traction control unit as above, it is characterized in that, described peripheral processes chip includes: level switch module, and described drive control signal includes: the digital quantity signal of described electric locomotive input and output is carried out the conversion signal that level conversion obtains by described level switch module；
Described level switch module and described breakdown judge module connect.
Electric locomotive traction control unit as above, it is characterized in that, described peripheral processes chip includes IGBT feedback of status module, and described drive control signal includes: the duty of described IGBT is carried out the status signal that detection obtains by described IGBT feedback of status module；
Described FPGA also includes: for the status signal to the output of described IGBT feedback of status module, carries out logical process, obtains secondary signal, described secondary signal is sent to the logic processing module of described breakdown judge module；
Described logic processing module is connected with described IGBT feedback of status module and described breakdown judge module.
Electric locomotive traction control unit as above, it is characterised in that described peripheral processes chip includes power module, and described drive control signal includes: the power supply signal of described power module output；Described breakdown judge module is also connected with described power module.
Electric locomotive traction control unit as above, it is characterised in that described peripheral processes chip includes signal configuration module, and described drive control signal includes: the configuration signal of described signal configuration module output；Described breakdown judge module also configures module with described signal and is connected.
To achieve these goals, the present invention provides the control method of a kind of electric locomotive traction control unit, including:
Input and the output signal of described electric locomotive are processed by peripheral processes chip, obtain drive control signal, send described drive control signal to on-site programmable gate array FPGA chip；
Digital Signal Processing dsp chip sends control instruction to described fpga chip, and the core algorithm realizing described traction control unit processes；
Described drive control signal is carried out breakdown judge by described fpga chip, when judged result be described drive control signal there is not fault time, according to described control instruction in described electric locomotive insulated gate bipolar transistor IGBT export driving pulse；Wherein, described drive control signal is to instigate described fpga chip to export the signal of described driving pulse according to described control instruction.
The control method of electric locomotive traction control unit as above, it is characterized in that, described peripheral processes chip includes analog digital conversion A/D module, and described drive control signal includes: the analog signals of described electric locomotive input and output is carried out the digital signal of analog digital conversion output by described A/D module；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to on-site programmable gate array FPGA chip:
The analog signals of described electric locomotive input and output is carried out analog digital conversion and exports described digital signal by described A/D module, and described digital signal is sent to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described digital signal is filtered obtaining the first signal by described fpga chip, it is judged that whether described first signal exists fault.
The control method of electric locomotive traction control unit as above, it is characterized in that, described peripheral processes chip includes level switch module, and described drive control signal includes: the digital quantity signal of described electric locomotive input and output is carried out the conversion signal that level conversion obtains by described level switch module；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to on-site programmable gate array FPGA chip:
The digital quantity signal of described electric locomotive input and output is carried out level conversion by described level switch module, obtains described conversion signal, described conversion signal is sent to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described fpga chip judges whether described changed signal exists fault.
The control method of electric locomotive traction control unit as above, it is characterized in that, described peripheral processes chip includes IGBT feedback of status module, and described drive control signal includes: the duty of described IGBT is carried out the status signal that detection obtains by described IGBT feedback of status module；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to on-site programmable gate array FPGA chip:
The duty of described IGBT is detected by described IGBT feedback of status module, it is thus achieved that described status signal, and described status information is sent to described fpga chip；
Described status signal is carried out logical process by described fpga chip, obtains secondary signal, it is judged that whether described secondary signal exists fault.
The control method of electric locomotive traction control unit as above, it is characterised in that described peripheral processes chip includes power module, and described drive control signal includes: the power supply signal of described power module output；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to on-site programmable gate array FPGA chip:
Described power module sends described power supply signal to described fpga chip；
Described fpga chip judges whether described power supply signal exists fault.
The control method of electric locomotive traction control unit as above, it is characterised in that described peripheral processes chip includes signal configuration module, and described drive control signal includes: the configuration signal of described signal configuration module output；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to on-site programmable gate array FPGA chip:
Described configuration module sends described configuration signal to described fpga chip；
Described fpga chip judges whether described configuration signal exists fault.
Electric locomotive traction control unit provided by the invention and control method, processed by the input to electric locomotive of the peripheral processes chip and output signal, obtain drive control signal, drive control signal is sent to fpga chip, this fpga chip receives the control instruction that the dsp chip as main process chip sends simultaneously, and this drive control signal is used for making this FPGA export driving pulse according to control instruction；Drive control signal is carried out breakdown judge by this fpga chip, when judged result be drive control signal there is not fault time, according to control instruction in electric locomotive IGBT export driving pulse.The drive control signal controlling driving pulse transmission is judged by the present invention by fpga chip, when fpga chip judges that drive control signal is absent from fault, fpga chip sends driving pulse to IGBT, to drive IGBT to be operated, and when fpga chip judges that drive control signal exists fault, fpga chip then interrupts the transmission of driving pulse, avoid, in electric locomotive, overvoltage occurs, cross stream or program error runs under the emergency case such as the IGBT upper and lower bridge arm that causes is straight-through the breaking-up to IGBT, such that it is able to reduce the burn-out rate of IGBT.
Accompanying drawing explanation
A kind of electric locomotive traction control unit structural representation that Fig. 1 provides for the embodiment of the present invention；
The another kind of electric propulsion control unit structural representation that Fig. 2 provides for the embodiment of the present invention；
The control method schematic diagram of a kind of electric locomotive traction control unit that Fig. 3 provides for the embodiment of the present invention.
Detailed description of the invention
Below by drawings and Examples, technical scheme is described in further detail.
A kind of electric locomotive traction control unit structural representation that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, this traction control unit includes: process as the dsp chip 10 of main process chip, the fpga chip 20 as collaborative process chip and the input to electric locomotive and output signal, obtain drive control signal, send drive control signal to the peripheral processes chip 30 of fpga chip 20.Wherein, fpga chip 20 includes: be used for the MPI 21 communicated with dsp chip 10, for receiving drive control signal, drive control signal is carried out breakdown judge, will determine that result is sent to pulse width modulation (PulseWidthModulation, referred to as PWM) the breakdown judge module 22 of signaling module 23 and for the judged result of breakdown judge module 22 be drive control signal there is not fault time, according to the control instruction that dsp chip 10 is sent by MPI 21, the pwm signal module 23 of driving pulse is exported to the IGBT in electric locomotive；Wherein, drive control signal is the signal instigating pwm signal module 23 to export driving pulse to IGBT according to control instruction.
Specifically, dsp chip 10 is connected with electric locomotive, as the main process chip of traction control unit, it is achieved the computing of traction control unit core algorithm, for instance, it is possible to achieve the vector controlled of traction control unit and Direct Torque Control.Dsp chip 10 is connected with fpga chip 20 also by MPI 21, sends control instruction by this MPI 21 to the pwm signal module 23 in fpga chip 20, so that this pwm signal module 23 processes accordingly according to control instruction.The related content completing core algorithm computing about dsp chip 10 may refer to relevant record of the prior art, repeats no more herein.
Wherein, peripheral processes chip 30 is connected with electric locomotive, gather input and the output signal of electric locomotive, and the data collected are processed accordingly, obtain drive control signal, for instance, peripheral processes chip 30 can to the analogue signal such as electric current, voltage in electric locomotive traction control unit before entering fpga chip 20, carry out altofrequency Filtering Processing, it is also possible to the digital quantity signal of the input of electric locomotive traction control unit and output is carried out the process such as voltage conversion.This peripheral processes chip 30 is also connected with fpga chip 20, and drive control signal is input to the breakdown judge module 22 in fpga chip 20.Drive control signal is carried out breakdown judge by breakdown judge module 22, and will determine that result is sent to pwm signal module 23, such as, breakdown judge module 22 can to internal power failure, reset state-detection, IGBT driving condition signal, excess temperature, overvoltage, cross the analog signals detections such as stream, under-voltage or undercurrent.When breakdown judge module 22 output judged result be drive control signal there is not fault time, the control instruction that pwm signal module 23 is sent by MPI 21 according to dsp chip 10, driving pulse is exported, to drive the properly functioning of IGBT device to the IGBT device in electric locomotive；And when breakdown judge module 22 output judged result be drive control signal break down time, pwm signal module 23 stops sending driving pulse to IGBT device, thereby may be ensured that IGBT device safety in the course of the work, avoid causing that when catastrophic failure occurs in electric locomotive IGBT device is destroyed, reduce the purpose of the burn-out rate of IGBT.Preferably, in the present embodiment, drive control signal can be compared by breakdown judge module 22 with the protection pre-set threshold value, and wherein, this protection threshold value can be configured according to the performance parameter of electric locomotive.When drive control signal is higher than protection threshold value, illustrating that drive control signal breaks down, namely there is fault in some parts in electric locomotive, and pwm signal module 23 stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus；And when drive control signal is less than or equal to protection threshold value, illustrating that drive control signal is absent from fault, pwm signal module 23 normally sends driving pulse, to drive IGBT, makes the IGBT can normal operation.
The electric locomotive traction control unit that the present embodiment provides, processed by the input to electric locomotive of the peripheral processes chip and output signal, obtain drive control signal, drive control signal is sent to fpga chip, fpga chip receives the control instruction that the dsp chip as main process chip sends simultaneously, and this drive control signal is used for making this fpga chip export driving pulse according to control instruction；Drive control signal is carried out breakdown judge by this fpga chip, when judged result be drive control signal there is not fault time, according to control instruction in electric locomotive IGBT export driving pulse.The drive control signal controlling driving pulse transmission is carried out breakdown judge by fpga chip by the present embodiment, when fpga chip judges that drive control signal is absent from fault, fpga chip sends driving pulse to IGBT, to drive IGBT to be operated, and when fpga chip judges that drive control signal exists fault, fpga chip then interrupts the transmission of driving pulse, avoid, in electric locomotive, overvoltage occurs, cross stream or program error runs and causes the breaking-up to IGBT under the emergency case such as the IGBT upper and lower bridge arm that causes is straight-through, such that it is able to reduce the burn-out rate of IGBT.
The another kind of electric locomotive traction control unit structural representation that Fig. 2 provides for the embodiment of the present invention.As shown in Figure 2, this traction control unit includes: process as the dsp chip 10 of main process chip, the fpga chip 20 as collaborative process chip and the input to electric locomotive and output signal, obtain drive control signal, send drive control signal to the peripheral processes chip 30 of fpga chip 20.
Specifically, dsp chip 10 is connected with electric locomotive, as the main process chip of traction control unit, it is achieved the computing of traction control unit core algorithm, for instance, it is possible to achieve the vector controlled of traction control unit and Direct Torque Control.Dsp chip 10 is also connected with fpga chip 20, sends control instruction to fpga chip 20, so that this pwm signal module 23 processes accordingly according to control instruction.The related content completing core algorithm computing about dsp chip 10 may refer to relevant record of the prior art, repeats no more herein.
Wherein, the one of fpga chip 20 realizes structure except including: except MPI 21, breakdown judge module 22 and pwm signal module 23, can also include with any one in lower module or its combination: be filtered processing to several signals of peripheral processes chip 30 output, obtain the first signal, first signal is sent to the digital filtering module 24 of breakdown judge module 23 and the status signal to the IGBT that peripheral processes chip 30 exports, carry out logical process, obtain secondary signal, secondary signal is sent to the logic processing module 25 of breakdown judge module 22.Accordingly, peripheral processes chip 30 may include that the analog signals to electric locomotive input and output, carry out analog-to-digital conversion process, the analog digital conversion A/D module 31 of output digit signals and/or the digital quantity signal of electric locomotive input and output is carried out the conversion signal that level conversion obtains, is sent to the level switch module 32 of breakdown judge module 22 by conversion signal.Additionally, external treatment chip 30 is except including A/D module 31 and level switch module 32, any one or its combination with lower module can also be included: the duty of IGBT is detected, it is thus achieved that the IGBT feedback of status module 33 of status signal, power module 34 and configuration module 35.
Based on above-mentioned, in the present embodiment, the drive control signal being input in breakdown judge module 22 includes but not limited to the combination of following any one or its: the analog signals of electric locomotive input and output is carried out the digital signal of analog digital conversion output, level switch module 32 and the digital quantity signal of electric locomotive input and output carries out conversion signal, the IGBT feedback of status module 33 that level conversion obtains the duty of IGBT carries out the configuration signal of status signal that detection obtains, the power supply signal of power module 34 output and signal configuration module 35 output by A/D module 31.
Wherein, in peripheral processes chip 30, A/D module 31 is connected with digital filtering module 24, this A/D module 31 and the analog signals to electric locomotive input and output, carry out analog digital conversion, obtaining digital signal, this digital signal is sent to digital filtering module 24, this digital filtering module 24 can realize the digital signal of input is carried out digital filtering, remove the high-frequency signal part in digital signal, obtain the first signal.This digital filtering module 24 is also connected with breakdown judge module 22, and as drive control signal, the first signal is sent to breakdown judge module 22, and the first signal is carried out breakdown judge by breakdown judge module 22.When the first signal breaks down, pwm signal module 23 stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.
In peripheral processes chip 30, the digital quantity signal of electric locomotive input and output is carried out level conversion by level switch module 32, obtain conversion signal, such as, owing to the voltage of fpga chip is low-voltage, and the voltage of electric locomotive input and output is high voltage, thus need level switch module 32 that the high voltage signal of electric locomotive input and output is converted to low voltage signal.Level switch module 32 is connected with breakdown judge module 22, and conversion signal is input in breakdown judge module 22 as drive control signal by level switch module 32, and conversion signal is carried out breakdown judge by breakdown judge module 22.When changing signal and breaking down, pwm signal module 23 stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.
Further, IGBT feedback of status module 33 in peripheral processes chip 30 is connected with IGBT, the duty of IGBT is detected, obtain the status signal of IGBT, IGBT feedback of status module 33 is also connected with the logic processing module 25 in fpga chip 20, and the status signal of IGBT is sent to logic processing module 25.Logic processing module 25 is connected with breakdown judge module 22, status signal is carried out logical process by logic processing module 25, obtaining secondary signal, specifically, regular in this status signal or irregular pulse signal can be processed into high and low level by logic processing module 25.Secondary signal is also sent to breakdown judge module 22 as drive control signal by this logic processing module 25, and status signal is carried out breakdown judge by breakdown judge module 22.When secondary signal breaks down, pwm signal module 23 stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.Alternatively, logic processing module 25 can also latch secondary signal.
Further, power module 34 in peripheral processes chip 30 is connected with electric locomotive, obtain the power supply signal of electric locomotive output, power module 34 is also connected with breakdown judge module 22, as drive control signal, the power supply signal of acquisition is sent to breakdown judge module 22, and power supply signal is carried out breakdown judge by breakdown judge module 22.Such as, when power module 34 normal operation, the power supply signal of output is a high level, and when power module 34 breaks down, one low level signal of power supply signal of output, breakdown judge module 22 compares with default level value by the level value of this power supply signal is carried out, when the level value of this power supply signal is higher than the level value preset, illustrate that this power supply signal is a high level signal, then breakdown judge module 22 judges that this power supply signal is absent from fault, and when the level value of this power supply signal is lower than default level value, illustrate that this power supply signal is a low level signal, then breakdown judge module 22 judges that this power supply signal exists fault, pwm signal module then stops sending driving pulse, IGBT device can be played the effect of protection.Signal configuration module 35 in peripheral processes chip 30 is connected with breakdown judge module 22, and configuration signal is sent to breakdown judge module 22 as drive control signal by signal configuration module 35, and configuration signal is carried out breakdown judge by breakdown judge module 22.The real work situation that this configuration signal is according to electric locomotive is set, e.g., and the configuration signal such as the input voltage of the electric locomotive of setting, electric current, output voltage, electric current, motor temperature, main transformer temperature, water temperature or hydraulic pressure.Specifically; configuration signal can be compared by breakdown judge module 22 with the protection value preset, when configuration signal is more than default protection value, it is judged that when breaking down for this configuration signal; pwm signal module 23 stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.
In this embodiment, after five drive control signal are judged by breakdown judge module 22, if it is judged that there is fault at least one drive control signal in five drive control signal, explanation electric locomotive breaks down, pwm signal module 23 stops sending driving pulse to IGBT, avoid IGBT damaged when catastrophic failure occurs in electric locomotive, it is possible to reduce the burn-out rate of IGBT.In the present embodiment, only when breakdown judge module 22 output judged result be five drive control signal be all absent from fault time, pwm signal module 23 just can send, according to dsp chip 10, the control instruction of coming, and sends driving pulse to IGBT, to drive IGBT normal operation.In the present embodiment, before driving pulse arrives IGBT, it is possible to the relevant parameter according to IGBT; such as minimum lead shut-in time, frequency etc.; driving pulse is processed so that the driving pulse being input to IGBT reaches the best, such that it is able to better protect IGBT device.Further, when breakdown judge module 22 judges that one of them drive control signal is absent from fault, the transmission of the drive control signal of fault can also be there will be no and be sent to dsp chip 10 by MPI 21, so that dsp chip 10 carries out related operation process.
Alternatively, fpga chip 20 can also arrange a register module, be used for storing drive control signal, in order to subsequent query or call.Further, fpga chip 20 can also include a digital quantity output module, this digital quantity goes out module can receive the Control instruction that dsp chip 10 is transmitted across, this Control instruction is decoded by this digital output module, output logic level is to control adhesive and the disconnection of electric locomotive repeat circuit, such as, low level disconnects, high level adhesive.
The electric locomotive traction control unit that the present embodiment provides, processed by the input to electric locomotive of the peripheral processes chip and output signal, obtain drive control signal, drive control signal is sent to fpga chip, fpga chip receives the control instruction that the dsp chip as main process chip sends simultaneously, and this drive control signal is used for making this fpga chip export driving pulse according to control instruction；Drive control signal is carried out breakdown judge by this fpga chip, when judged result be drive control signal there is not fault time, according to control instruction in electric locomotive IGBT export driving pulse.The drive control signal controlling driving pulse transmission is carried out breakdown judge by fpga chip by the present embodiment, when fpga chip judges that drive control signal is absent from fault, fpga chip sends driving pulse to IGBT, to drive IGBT to be operated, and when fpga chip judges that drive control signal exists fault, fpga chip then interrupts the transmission of driving pulse, avoid, in electric locomotive, overvoltage occurs, cross stream or program error runs and causes the breaking-up to IGBT under the emergency case such as the IGBT upper and lower bridge arm that causes is straight-through, such that it is able to reduce the burn-out rate of IGBT.
Further, owing to FPGA has the feature such as two-forty, strong, the good confidentiality of autgmentability, therefore, FPGA can replace traditional analog circuit.In the present embodiment, also by utilizing data-handling capacity powerful for FPGA, the functions such as external logic control, driving pulse triggering and dead zone function can be completed, thus being greatly saved the resource of DSP, and DSP can be only used as main process chip for realizing the process of traction control unit core algorithm, such that it is able to improve the integrated level of pull-in control system system control cpu, enhance the stability of cpu system.
The control method schematic diagram of a kind of electric locomotive traction control unit that Fig. 3 provides for the embodiment of the present invention.As it is shown on figure 3, the control method of this electric locomotive traction control unit comprises the steps:
301, input and the output signal of described electric locomotive are processed by peripheral processes chip, obtain drive control signal, send described drive control signal to on-site programmable gate array FPGA chip.
Peripheral processes chip is connected with electric locomotive, gather input and the output signal of electric locomotive, and the data collected are processed accordingly, obtain drive control signal, such as, peripheral processes chip to the analogue signal such as electric current, voltage in electric locomotive traction control unit before entering fpga chip, can carry out altofrequency Filtering Processing, it is also possible to the digital quantity signal of the input of electric locomotive traction control unit and output is carried out the process such as voltage conversion.This peripheral processes chip is also connected with fpga chip, and drive control signal is input to the breakdown judge module in fpga chip.
302, Digital Signal Processing dsp chip sends control instruction to described fpga chip, and the core algorithm realizing described traction control unit processes.
Dsp chip is connected with electric locomotive, as the main process chip of traction control unit, it is achieved the computing of traction control unit core algorithm, for instance, it is possible to achieve the vector controlled of traction control unit and Direct Torque Control.Dsp chip is connected with this fpga chip also by the MPI in fpga chip, sends control instruction by this MPI to the pwm signal module in fpga chip, so that this pwm signal module processes accordingly according to control instruction.The related content completing core algorithm computing about dsp chip may refer to relevant record of the prior art, repeats no more herein.
303, described drive control signal is carried out breakdown judge by described fpga chip, when judged result be described drive control signal there is not fault time, according to described control instruction in described electric locomotive insulated gate bipolar transistor IGBT export driving pulse；Wherein, described drive control signal is to instigate described fpga chip to export the signal of described driving pulse according to described control instruction.
There is the drive control signal of coming in the breakdown judge module receiving step 301 in fpga chip, drive control signal is carried out breakdown judge by breakdown judge module, and will determine that result is sent to the pwm signal module in this fpga chip, such as, breakdown judge module can to internal power failure, reset state-detection, IGBT driving condition signal, excess temperature, overvoltage, cross the analog signals detections such as stream, under-voltage or undercurrent.When breakdown judge module output judged result be drive control signal there is not fault time, the control instruction that pwm signal module is sent by MPI according to dsp chip, driving pulse is exported, to drive the properly functioning of IGBT device to the IGBT device in electric locomotive；And when breakdown judge module output judged result be drive control signal break down time, pwm signal module stops sending driving pulse to IGBT device, thereby may be ensured that IGBT device safety in the course of the work, avoid causing that when catastrophic failure occurs in electric locomotive IGBT device is destroyed, reduce the purpose of the burn-out rate of IGBT.
Preferably, in the present embodiment, drive control signal can be compared by breakdown judge module with the protection pre-set threshold value, and wherein, this protection threshold value can be configured according to the performance parameter of electric locomotive.When drive control signal is higher than protection threshold value, illustrating that drive control signal breaks down, namely there is fault in some parts in electric locomotive, and pwm signal module stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus；And when drive control signal is lower than protection threshold value, illustrating that drive control signal is absent from fault, pwm signal module normally sends driving pulse, to drive the normal operation of IGBT.
The electric locomotive traction control unit that the present embodiment provides, processed by the input to electric locomotive of the peripheral processes chip and output signal, obtain drive control signal, drive control signal is sent to fpga chip, fpga chip receives the control instruction that the dsp chip as main process chip sends simultaneously, and this drive control signal is used for making this fpga chip export driving pulse according to control instruction；Drive control signal is carried out breakdown judge by this fpga chip, when judged result be drive control signal there is not fault time, according to control instruction in electric locomotive IGBT export driving pulse.The drive control signal controlling driving pulse transmission is carried out breakdown judge by fpga chip by the present embodiment, when fpga chip judges that drive control signal is absent from fault, fpga chip sends driving pulse to IGBT, to drive IGBT to be operated, and when fpga chip judges that drive control signal exists fault, fpga chip then interrupts the transmission of driving pulse, avoid, in electric locomotive, overvoltage occurs, cross stream or program error runs and causes the breaking-up to IGBT under the emergency case such as the IGBT upper and lower bridge arm that causes is straight-through, such that it is able to reduce the burn-out rate of IGBT.
Specifically, in the present embodiment, the drive control signal of the breakdown judge module being input in fpga chip includes but not limited to the combination of following any one or its: the analog signals of electric locomotive input and output is carried out the digital signal of analog digital conversion output by the A/D module in peripheral processes chip, the digital quantity signal of electric locomotive input and output is carried out the conversion signal that level conversion obtains by the level switch module in peripheral processes chip, the duty of IGBT is carried out the status signal that detection obtains by the IGBT feedback of status module in peripheral processes chip, the configuration signal of the signal configuration module output in the power supply signal of the power module output in peripheral processes chip and peripheral processes chip.
Wherein, if peripheral processes chip includes analog digital conversion A/D module, then drive control signal includes: the analog signals of electric locomotive input and output is carried out the digital signal of analog digital conversion output by A/D module.Based on this, input and the output signal of electric locomotive are processed by peripheral processes chip, obtain drive control signal, send drive control signal to include to the process of the fpga chip as collaborative process chip: the analog signals of electric locomotive input and output is carried out analog digital conversion output digit signals by A/D module, and this digital signal is sent to fpga chip.Correspondingly, drive control signal is carried out breakdown judge and includes by fpga chip: this digital signal is filtered obtaining the first signal by fpga chip, it is judged that whether this first signal exists fault.Concrete, A/D module is connected with the digital filtering module in fpga chip, this A/D module and the analog signals to electric locomotive input and output, carry out analog digital conversion, obtaining digital signal, this digital signal is sent to digital filtering module, this digital filtering module can realize the digital signal of input is carried out digital filtering, remove the high-frequency signal part in digital signal, obtain the first signal.This digital filtering module is also connected with breakdown judge module, and as drive control signal, the first signal is sent to breakdown judge module, and the first signal is carried out breakdown judge by breakdown judge module.When the first signal breaks down, pwm signal module stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.
If peripheral processes chip includes level switch module, then drive control signal includes: the analog signals of electric locomotive input and output is carried out the digital signal of analog digital conversion output by level switch module.Based on this, input and the output signal of electric locomotive are processed by peripheral processes chip, obtain drive control signal, send drive control signal to include to the process of the fpga chip as collaborative process chip: the digital quantity signal of electric locomotive input and output is carried out level conversion by level switch module, obtain conversion signal, this conversion signal is sent to fpga chip；Correspondingly, drive control signal is carried out breakdown judge and includes by fpga chip: fpga chip judges whether this conversion signal exists fault.Concrete, the digital quantity signal of electric locomotive input and output is carried out level conversion by level switch module, obtain conversion signal, such as, owing to the voltage of fpga chip is low-voltage, and the voltage of electric locomotive input and output is high voltage, thus need level switch module that the high voltage signal of electric locomotive input and output is converted to low voltage signal.Level switch module is connected with breakdown judge module, and conversion signal is input in breakdown judge module as drive control signal by level switch module, and conversion signal is carried out breakdown judge by breakdown judge module.When changing signal and breaking down, pwm signal module stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.
Further, if peripheral processes chip includes IGBT feedback of status module, then drive control signal includes: the duty of IGBT is carried out the status signal that detection obtains by IGBT feedback of status module.Based on this, input and the output signal of electric locomotive are processed by peripheral processes chip, obtain drive control signal, send drive control signal to include to the process of the fpga chip as collaborative process chip: the duty of IGBT is detected by IGBT feedback of status module, obtain status signal, this status signal is sent to fpga chip；Correspondingly, drive control signal is carried out breakdown judge and includes by fpga chip: this status signal is carried out logical process by fpga chip, obtains secondary signal, it is judged that whether this secondary signal exists fault.Specifically, IGBT feedback of status module is connected with IGBT, and the duty of IGBT is detected, it is thus achieved that the status signal of IGBT.IGBT feedback of status module is also connected with the logic processing module in fpga chip, and the status signal of IGBT is sent to logic processing module.Logic processing module is connected with breakdown judge module, and status signal is carried out logical process by logic processing module, obtains secondary signal, and specifically, regular in this status signal or irregular pulse signal can be processed into high and low level by logic processing module.Secondary signal is also sent to breakdown judge module as drive control signal by logic processing module, and status signal is carried out breakdown judge by breakdown judge module.When secondary signal breaks down, pwm signal module stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.Alternatively, logic processing module can also latch secondary signal.
Further, if peripheral processes chip includes power module, then drive control signal includes: the power supply signal of power module output.Based on this, input and the output signal of electric locomotive are processed by peripheral processes chip, obtain drive control signal, send drive control signal and include to the process of the fpga chip as collaborative process chip: power supply signal is sent to fpga chip by power module；Correspondingly, drive control signal is carried out breakdown judge and includes by fpga chip: fpga chip judges whether this power supply signal exists fault.Specifically, power module is connected with electric locomotive, obtains the power supply signal of electric locomotive output, and power module is also connected with breakdown judge module, as drive control signal, the power supply signal of acquisition is sent to breakdown judge module, and power supply signal is carried out breakdown judge by breakdown judge module.Such as, when power module normal operation, the power supply signal of output is a high level, and when power module breaks down, one low level signal of power supply signal of output, breakdown judge module compares with default level value by the level value of this power supply signal is carried out, when the level value of this power supply signal is higher than the level value preset, illustrate that this power supply signal is a high level signal, then breakdown judge module judges that this power supply signal is absent from fault, and when the level value of this power supply signal is lower than default level value, illustrate that this power supply signal is a low level signal, then breakdown judge module judges that this power supply signal exists fault, pwm signal module then stops sending driving pulse, IGBT device can be played the effect of protection.
If peripheral processes chip includes signal configuration module, then drive control signal includes: the configuration signal of signal configuration module output.Based on this, input and the output signal of electric locomotive are processed by peripheral processes chip, obtain drive control signal, send drive control signal and include to the process of the fpga chip as collaborative process chip: configuration signal is sent to fpga chip by signal configuration module；Correspondingly, drive control signal is carried out breakdown judge and includes by fpga chip: fpga chip judges whether this configuration signal exists fault.Signal configuration module is connected with breakdown judge module, and as drive control signal, configuration signal is sent to breakdown judge module, and configuration signal is carried out breakdown judge by breakdown judge module.The real work situation that this configuration signal is according to electric locomotive is set, e.g., and the configuration signal such as the input voltage of the electric locomotive of setting, electric current, output voltage, electric current, motor temperature, main transformer temperature, water temperature or hydraulic pressure.Specifically; configuration signal can be compared by breakdown judge module 22 with the protection value preset, when configuration signal is more than default protection value, it is judged that when breaking down for this configuration signal; pwm signal module 23 stops sending driving pulse, thus effectively protecting IGBT and other high tension apparatus.
Alternatively, fpga chip can also store drive control signal, in order to subsequent query or call.Further, fpga chip can also receive the Control instruction that dsp chip is transmitted across, and this Control instruction is decoded by this digital output module, output logic level is to control adhesive and the disconnection of electric locomotive repeat circuit, such as, low level disconnects, high level adhesive.
In this embodiment, after five drive control signal are judged by breakdown judge module, if it is judged that there is fault at least one drive control signal in five drive control signal, explanation electric locomotive breaks down, pwm signal module stops sending driving pulse to IGBT, avoid IGBT damaged when catastrophic failure occurs in electric locomotive, it is possible to reduce the burn-out rate of IGBT.In the present embodiment, only when breakdown judge module output judged result be five drive control signal be all absent from fault time, pwm signal module just can according to dsp chip send come control instruction, to IGBT send driving pulse, to drive IGBT normal operation.In the present embodiment, before driving pulse arrives IGBT, it is possible to the relevant parameter according to IGBT; such as minimum lead shut-in time, frequency etc.; driving pulse is processed so that the driving pulse being input to IGBT reaches the best, such that it is able to better protect IGBT device.Further, when breakdown judge module judges that one of them drive control signal is absent from fault, it is also possible to there will be no the transmission of the drive control signal of fault and be sent to dsp chip by MPI, so that dsp chip carries out related operation process.
Further, owing to FPGA has the feature such as two-forty, strong, the good confidentiality of autgmentability, therefore, FPGA can replace traditional analog circuit.In the present embodiment, also by utilizing data-handling capacity powerful for FPGA, the functions such as external logic control, driving pulse triggering and dead zone function can be completed, thus being greatly saved the resource of DSP, and DSP can be only used as main process chip for realizing the process of traction control unit core algorithm, such that it is able to improve the integrated level of pull-in control system system control cpu, enhance the stability of cpu system.
Last it is noted that various embodiments above is only in order to illustrate technical scheme, it is not intended to limit；Although the present invention being described in detail with reference to foregoing embodiments, it will be understood by those within the art that: the technical scheme described in foregoing embodiments still can be modified by it, or wherein some or all of technical characteristic is carried out equivalent replacement；And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme.
Claims (10)
1. an electric locomotive traction control unit, it is characterized in that, including: process as the Digital Signal Processing dsp chip of main process chip, the on-site programmable gate array FPGA chip as collaborative process chip and the input to described electric locomotive and output signal, obtain drive control signal, and send described drive control signal to the peripheral processes chip of described fpga chip；
Described fpga chip includes: be used for the MPI communicated with described dsp chip, for receiving described drive control signal, described drive control signal is carried out breakdown judge, will determine that result be sent to pulse width modulation (PWM) signaling module breakdown judge module and for the judged result of described breakdown judge module be described drive control signal there is not fault time, according to the control instruction that described dsp chip is sent by described MPI, the described pwm signal module of driving pulse is exported to the insulated gate bipolar transistor IGBT in described electric locomotive；Wherein, described drive control signal is the signal instigating described pwm signal module to export described driving pulse to described IGBT according to described control instruction；
Wherein, described breakdown judge module is connected with described peripheral processes chip and described pwm signal module；Described pwm signal module is also connected with described IGBT；
Described peripheral processes chip includes IGBT feedback of status module, and described drive control signal includes: the duty of described IGBT is carried out the status signal that detection obtains by described IGBT feedback of status module；
Described FPGA also includes: for the status signal to the output of described IGBT feedback of status module, carries out logical process, obtains secondary signal, described secondary signal is sent to the logic processing module of described breakdown judge module；
Described logic processing module is connected with described IGBT feedback of status module and described breakdown judge module.
2. electric locomotive traction control unit according to claim 1, it is characterized in that, described peripheral processes chip includes analog digital conversion A/D module, and described drive control signal includes: the analog signals of described electric locomotive input and output is carried out the digital signal of analog digital conversion output by described A/D module；
Described fpga chip also includes: the digital signal for described A/D module is exported is filtered obtaining the first signal, and described first signal is sent to the digital filtering module of described breakdown judge module；
Described digital filtering module is connected with described A/D module and described breakdown judge module.
3. electric locomotive traction control unit according to claim 1, it is characterized in that, described peripheral processes chip includes: for the digital quantity signal of described electric locomotive input and output is carried out the conversion signal that level conversion obtains, and described conversion signal is sent to the level switch module of described breakdown judge module, described drive control signal includes: the digital quantity signal of described electric locomotive input and output is carried out the conversion signal that level conversion obtains by described level switch module；
Described level switch module and described breakdown judge module connect.
4. the electric locomotive traction control unit according to claim 1 or 2 or 3, it is characterised in that described peripheral processes chip includes power module, and described drive control signal includes: the power supply signal of described power module output；Described breakdown judge module is connected with described power module.
5. the electric locomotive traction control unit according to claim 1 or 2 or 3, it is characterised in that described peripheral processes chip includes signal configuration module, and described drive control signal includes: the configuration signal of described signal configuration module output；Described breakdown judge module configures module with described signal and is connected.
6. the control method of an electric locomotive traction control unit, it is characterised in that including:
Input and the output signal of described electric locomotive are processed by peripheral processes chip, obtain drive control signal, send described drive control signal to the on-site programmable gate array FPGA chip as collaborative process chip；
Digital Signal Processing dsp chip as main process chip sends control instruction to described fpga chip, and the core algorithm realizing described traction control unit processes；
Described drive control signal is carried out breakdown judge by described fpga chip, when judged result be described drive control signal there is not fault time, according to described control instruction in described electric locomotive insulated gate bipolar transistor IGBT export driving pulse；Wherein, described drive control signal is to instigate described fpga chip to export the signal of described driving pulse according to described control instruction；
Described peripheral processes chip includes analog digital conversion A/D module, and described drive control signal includes: the analog signals of described electric locomotive input and output is carried out the digital signal of analog digital conversion output by described A/D module；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to the on-site programmable gate array FPGA chip as collaborative process chip:
The analog signals of described electric locomotive input and output is carried out analog digital conversion and exports described digital signal by described A/D module, and described digital signal is sent to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described digital signal is filtered obtaining the first signal by described fpga chip, it is judged that whether described first signal exists fault.
7. the control method of electric locomotive traction control unit according to claim 6, it is characterized in that, described peripheral processes chip includes level switch module, and described drive control signal includes: the digital quantity signal of described electric locomotive input and output is carried out the conversion signal that level conversion obtains by described level switch module；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to the on-site programmable gate array FPGA chip as collaborative process chip:
The digital quantity signal of described electric locomotive input and output is carried out level conversion by described level switch module, obtains described conversion signal, described conversion signal is sent to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described fpga chip judges whether described conversion signal exists fault.
8. the control method of the electric locomotive traction control unit according to claim 6 or 7, it is characterized in that, described peripheral processes chip includes IGBT feedback of status module, and described drive control signal includes: the duty of described IGBT is carried out the status signal that detection obtains by described IGBT feedback of status module；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to the on-site programmable gate array FPGA chip as collaborative process chip:
The duty of described IGBT is detected by described IGBT feedback of status module, it is thus achieved that described status signal, and described status information is sent to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described status signal is carried out logical process by described fpga chip, obtains secondary signal, it is judged that whether described secondary signal exists fault.
9. the control method of the electric locomotive traction control unit according to claim 6 or 7, it is characterised in that described peripheral processes chip includes power module, and described drive control signal includes: the power supply signal of described power module output；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to the on-site programmable gate array FPGA chip as collaborative process chip:
Described power module sends described power supply signal to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described fpga chip judges whether described power supply signal exists fault.
10. the control method of the electric locomotive traction control unit according to claim 6 or 7, it is characterised in that described peripheral processes chip includes signal configuration module, and described drive control signal includes: the configuration signal of described signal configuration module output；
Input and the output signal of described electric locomotive are processed by described peripheral processes chip, obtain drive control signal, send described drive control signal and include to the on-site programmable gate array FPGA chip as collaborative process chip:
Described configuration module sends described configuration signal to described fpga chip；
Described drive control signal is carried out breakdown judge and includes by described fpga chip:
Described fpga chip judges whether described configuration signal exists fault.
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| CN104901281A (en) * | 2014-12-29 | 2015-09-09 | 长沙贝士德电气科技有限公司 | Driving protection circuit based on IGBT inverter circuit applications |
| CN106383467B (en) * | 2016-10-13 | 2019-01-08 | 中车大连电力牵引研发中心有限公司 | traction controller based on microcontroller |
| CN111381528B (en) * | 2018-12-28 | 2021-10-01 | 蜂巢传动***(江苏)有限公司保定研发分公司 | Signal control device and method and vehicle |
| CN110763938A (en) * | 2019-11-01 | 2020-02-07 | 中车大连机车研究所有限公司 | Intelligent state monitoring type traction control interface module |
| CN111786546B (en) * | 2020-07-20 | 2021-10-15 | 中车青岛四方车辆研究所有限公司 | Power module driving system and control method |
| CN113022649B (en) * | 2021-03-18 | 2022-06-14 | 中车青岛四方车辆研究所有限公司 | PWM encoder and encoding method |
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