CN207368916U - DC machine control device - Google Patents
DC machine control device Download PDFInfo
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- CN207368916U CN207368916U CN201720995041.8U CN201720995041U CN207368916U CN 207368916 U CN207368916 U CN 207368916U CN 201720995041 U CN201720995041 U CN 201720995041U CN 207368916 U CN207368916 U CN 207368916U
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Abstract
The utility model discloses a kind of DC machine control device.The core processing unit is according to closed loop feedback signal and the first PWM waveform of motor start up operation signal output to drive IGBT driving circuits.The IGBT driving circuits obtain above-mentioned first PWM waveform, and above-mentioned first PWM waveform is amplified the second PWM waveform of output to drive IGBT module.The IGBT module obtains above-mentioned second PWM waveform, and according to above-mentioned second PWM waveform output motor control signal to drive motor control unit.The motor control unit obtains above-mentioned motor control signal, and the starting current value of direct current generator is adjusted according to above-mentioned motor control signal.The utility model realizes start and stop in the range of the safe current of direct current generator, solves the problems, such as that D.C. contactor starting current during switching is controlled is excessive.
Description
Technical field
The utility model belongs to DC MOTOR CONTROL technical field, and in particular to a kind of DC machine control device.
Background technology
Starting current is larger on startup for direct current generator, and the feature is very notable.Calculate according to statistics, maximum impact electric current can
Reach 15-20 times of rated current.Direct current generator starting current far above rated current causes sternly in itself for direct current generator
The rush of current of weight and mechanical shock.Security risk is caused to evade starting current, armature is used in places such as thermal power plants
Starting mode of the circuit series resistor as direct current generator.Above-mentioned Starting mode existing defects and hidden danger, are mainly reflected in following
Several aspects.
First, dash current is big during cannot thoroughly solving the problems, such as direct current generator startup.Direct current in start-up course
The starting current of machine still is more than its rated current several times, still may it is excessive due to starting current and cause motor accelerate damage
It is bad.
Second, by multiple high-capacity direct current contactors and intermediate relay, time relay composition control circuit, controlling party
Formula is complicated and link is more, causes higher failure rate and maintenance workload, and repair and maintenance has inconvenience more.
Third, any stage resistive switching will result directly in direct current generator abnormal running, resistance hair in start-up course
Hot serious, motor overload threatens for the normal work of electric secondary circuit, causes related switch to be refused in the case of accident
Tripping, further expands accident scope and the order of severity.
For this reason, it is necessary to propose a kind of New Type of Direct-current Machine control device, it is real in the range of the safe current of direct current generator
Existing start and stop.
Utility model content
The utility model is directed to the situation of the prior art, overcomes drawbacks described above, there is provided a kind of DC machine control device.
The utility model uses following technical scheme, and the DC machine control device includes core processing unit, IGBT
Driving circuit, IGBT module and motor control unit, the core processing unit, IGBT driving circuits, IGBT module and motor
Control unit is sequentially connected electrically between any two and order drives, wherein；
The core processing unit is according to the first PWM waveform of closed loop feedback signal and motor start up operation signal output
To drive IGBT driving circuits；
The IGBT driving circuits obtain above-mentioned first PWM waveform, and above-mentioned first PWM waveform is amplified
The second PWM waveform is exported to drive IGBT module；
The IGBT module obtains above-mentioned second PWM waveform, and exports electricity according to above-mentioned second PWM waveform
Machine control signal is to drive motor control unit；
The motor control unit obtains above-mentioned motor control signal, and adjusts direct current according to above-mentioned motor control signal
The starting current value of motor.
According to above-mentioned technical proposal, the DC machine control device further includes voltage and current measurement module, the voltage
Current measurement module is used for output closed-loop feedback signal.
According to above-mentioned technical proposal, the voltage and current measurement module includes exciting current detection unit, armature voltage is examined
Survey unit and armature supply detection unit, the exciting current detection unit, armature voltage detection unit and armature supply detection
Unit is electrically connected core processing unit, the exciting current detection unit, armature voltage detection unit and armature independently of each other
Current detecting unit is respectively used to detection exciting current parameter, armature voltage parameter and armature supply parameter, and correspondingly defeated
Go out exciting current signal, armature voltage signal and armature current signal, the core processing unit obtains above-mentioned excitation electricity at the same time
Flow signal, armature voltage signal and armature current signal.
According to above-mentioned technical proposal, the DC machine control device further includes operation detection unit, the operation detection
Unit is used to detect motor start up operation signal.
According to above-mentioned technical proposal, the operation detection unit is electrically connected core processing unit, the core processing unit
Obtain above-mentioned motor start up operation signal.
According to above-mentioned technical proposal, the core processing unit is according to the first PWM waveform of closed loop feedback Signal Regulation
PWM waveform duty cycle.
According to above-mentioned technical proposal, the DC machine control device further includes state indication unit, the state instruction
Unit is electrically connected core processing unit, the core processing unit output data information and/or warning information, the state instruction
Unit obtains and exports above-mentioned data message and/or warning information, and above-mentioned data message includes but is not limited to exciting current ginseng
Number, armature voltage parameter and armature supply parameter, above-mentioned warning information include but not limited to stopping alarm.
DC machine control device disclosed in utility model the utility model, its advantage are, in direct current generator
Start and stop are realized in the range of safe current, solve the problems, such as that D.C. contactor starting current during switching is controlled is excessive.
Brief description of the drawings
Fig. 1 is the system block diagram of the preferred embodiment in the utility model.
Reference numeral includes：1- operates detection unit；2- voltage and current measurement modules；4- state indication units；5- cores
Processing unit；6-IGBT driving circuits；7-IGBT modules；8- motor control units；9- exciting current detection units；10- armatures
Voltage detection unit；11- armature supply detection units.
Embodiment
The utility model discloses a kind of DC machine control device, with reference to preferred embodiment, to the utility model
Embodiment be further described.
Referring to Fig. 1 of attached drawing, Fig. 1 shows the modular structure of the DC machine control device.Preferably, the direct current
Motor control assembly includes core processing unit 5, further includes IGBT driving circuits 6, IGBT module 7 and motor control unit 8, institute
State core processing unit 5, IGBT driving circuits 6, IGBT module 7 and motor control unit 8 be sequentially connected electrically between any two and
Order drives.Wherein, the core processing unit 5 is according to the first PWM of closed loop feedback signal and motor start up operation signal output
Waveform signal is to drive IGBT driving circuits 6；The IGBT driving circuits 6 obtain above-mentioned first PWM waveform, and will be upper
It is the second PWM waveform to drive IGBT module 7 to state the amplification output of the first PWM waveform；On the IGBT module 7 obtains
The second PWM waveform is stated, and it is single to drive motor to control according to above-mentioned second PWM waveform output motor control signal
Member 8；The motor control unit 8 obtains above-mentioned motor control signal, and adjusts direct current according to above-mentioned motor control signal
The starting current value of machine.Wherein, the motor control unit 8 is equipped with energized circuit and armature circuit.
Preferably, the DC machine control device further includes voltage and current measurement module 2, the voltage and current measurement mould
Block 2 is used for output closed-loop feedback signal.Wherein, the voltage and current measurement module 2 includes exciting current detection unit 9, armature
Voltage detection unit 10 and armature supply detection unit 11, the exciting current detection unit 9 are arranged on above-mentioned energized circuit, institute
State armature voltage detection unit 10, armature supply detection unit 11 while be arranged on above-mentioned armature circuit, the exciting current inspection
Survey unit 9, armature voltage detection unit 10 and armature supply detection unit 11 and be electrically connected core processing unit 5 independently of each other.
Wherein, the exciting current detection unit 9, armature voltage detection unit 10 and armature supply detection unit 11 are respectively used to detect
Exciting current parameter, armature voltage parameter and armature supply parameter, and correspondingly export exciting current signal, armature voltage letter
Number and armature current signal, the core processing unit 5 obtain at the same time above-mentioned motor start up operation signal, exciting current signal,
Armature voltage signal and armature current signal.
Preferably, the DC machine control device further includes operation detection unit 1, and the operation detection unit 1 is electrically connected
Connect core processing unit 5.Wherein, the operation detection unit 1 is used to detect electric motor starting and output motor start-up operation is believed
Number, the core processing unit 5 obtains above-mentioned motor start up operation signal.
Preferably, the core processing unit 5 will obtain above-mentioned motor start up operation signal, exciting current signal, armature
Voltage signal and armature current signal are as closed loop feedback signal, by the PWM waveform duty for adjusting the first PWM waveform
Than finally realizing effective control of direct current generator starting current.Meanwhile voltage and current measurement module 2 detects direct current generator in real time
The parameters such as exciting current signal, armature voltage signal and armature current signal in start-up course, realize that direct current generator starts electricity
The closed-loop control of stream.In other words, in the start-up course of direct current generator, voltage and current measurement module 2 measures direct current in real time
The operating parameter of machine, wherein exciting current detection unit 9 are arranged on the energized circuit of direct current generator, measure exciting current ginseng in real time
Number.Armature voltage detection unit 10, armature supply detection unit 11 are arranged on the armature circuit of direct current generator, measure armature in real time
Voltage, armature supply parameter.The operating parameter that measurement obtains is sent into core processing unit 5 by voltage and current measurement module 2 in real time,
Whether core processing unit 5 is reasonable according to preset parameter or the above-mentioned operating parameter of Predistribution Algorithm real-time judge.Work as operating parameter
When abnormal, the protection acts such as parameters revision or emergency shutdown are made in time, it is ensured that the clean boot of direct current generator.
Preferably, the DC machine control device further includes state indication unit 4, and the state indication unit 4 is electrically connected
Connect core processing unit 5, the 5 output data information of core processing unit and/or warning information, the state indication unit 4
Obtain and export above-mentioned data message and/or warning information, above-mentioned data message includes but is not limited to exciting current parameter, electricity
Pivot voltage parameter and armature supply parameter, above-mentioned warning information include but not limited to stopping alarm.
The invention also discloses a kind of direct current generator safe starting method, comprise the following steps.
Step S1：The core processing unit 5 is according to the first PWM of closed loop feedback signal and motor start up operation signal output
Waveform signal is to drive IGBT driving circuits 6；
Step S2：The IGBT driving circuits 6 obtain above-mentioned first PWM waveform, and by above-mentioned first PWM waveform
Signal amplification output is the second PWM waveform to drive IGBT module 7；
Step S3：The IGBT module 7 obtains above-mentioned second PWM waveform, and is believed according to above-mentioned second PWM waveform
Number output motor control signal is to drive motor control unit 8；
Step S4：The motor control unit 8 obtains above-mentioned motor control signal, and according to above-mentioned motor control signal
Adjust the starting current value of direct current generator.
Preferably, in step sl, above-mentioned closed loop feedback signal includes exciting current signal, armature voltage signal and armature
Current signal.
Preferably, in step sl, the core processing unit 5 is believed according to the first PWM waveform of closed loop feedback Signal Regulation
Number PWM waveform duty cycle.
Preferably, after step s4, step S5 is further included：
Step S5：The state indication unit 4 obtains and output data information and/or warning information.
Preferably, in step s 5, above-mentioned data message include but be not limited to exciting current parameter, armature voltage parameter and
Armature supply parameter, above-mentioned warning information include but not limited to stopping alarm.
For a person skilled in the art, the technical solution described in foregoing embodiments can still be repaiied
Change, or equivalent substitution is carried out to which part technical characteristic, where within the spirit and principles of the present invention, that is made is any
Modification, equivalent substitution, improvement etc., should be included in the scope of protection of the utility model.
Claims (5)
1. a kind of DC machine control device, it is characterised in that including core processing unit, IGBT driving circuits, IGBT module
And motor control unit, the core processing unit, IGBT driving circuits, IGBT module and motor control unit between any two according to
Secondary electrical connection and order driving, wherein；
The core processing unit is according to closed loop feedback signal and the first PWM waveform of motor start up operation signal output to drive
Dynamic IGBT driving circuits；
The IGBT driving circuits obtain above-mentioned first PWM waveform, and above-mentioned first PWM waveform is amplified and is exported
Second PWM waveform is to drive IGBT module；
The IGBT module obtains above-mentioned second PWM waveform, and according to above-mentioned second PWM waveform output motor control
Signal processed is to drive motor control unit；
The motor control unit obtains above-mentioned motor control signal, and adjusts direct current generator according to above-mentioned motor control signal
Starting current value；
The DC machine control device further includes operation detection unit, and the operation detection unit is used to detect electric motor starting behaviour
Make signal；
The operation detection unit is electrically connected core processing unit, and the core processing unit obtains above-mentioned motor start up operation letter
Number.
2. DC machine control device according to claim 1, it is characterised in that the DC machine control device also wraps
Voltage and current measurement module is included, the voltage and current measurement module is used for output closed-loop feedback signal.
3. DC machine control device according to claim 2, it is characterised in that the voltage and current measurement module includes
Exciting current detection unit, armature voltage detection unit and armature supply detection unit, the exciting current detection unit, armature
Voltage detection unit and armature supply detection unit are electrically connected core processing unit independently of each other, and the exciting current detection is single
Member, armature voltage detection unit and armature supply detection unit be respectively used to detection exciting current parameter, armature voltage parameter and
Armature supply parameter, and exciting current signal, armature voltage signal and armature current signal are correspondingly exported, at the core
Reason unit obtains above-mentioned exciting current signal, armature voltage signal and armature current signal at the same time.
4. according to the DC machine control device described in any claim in claim 1-3, it is characterised in that the core
Processing unit is according to the PWM waveform duty cycle of the first PWM waveform of closed loop feedback Signal Regulation.
5. DC machine control device according to claim 1, it is characterised in that the DC machine control device also wraps
State indication unit is included, the state indication unit is electrically connected core processing unit, the core processing unit output data letter
Breath and/or warning information, the state indication unit obtain and export above-mentioned data message and/or warning information, above-mentioned number
It is believed that breath include but not limited to exciting current parameter, armature voltage parameter and armature supply parameter, above-mentioned warning information include but
It is not limited to stopping alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995041.8U CN207368916U (en) | 2017-08-10 | 2017-08-10 | DC machine control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720995041.8U CN207368916U (en) | 2017-08-10 | 2017-08-10 | DC machine control device |
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| Publication Number | Publication Date |
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| CN207368916U true CN207368916U (en) | 2018-05-15 |
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| CN201720995041.8U Active CN207368916U (en) | 2017-08-10 | 2017-08-10 | DC machine control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294442A (en) * | 2017-08-10 | 2017-10-24 | 浙江涵普电力科技有限公司 | DC machine control device and its safe starting method |
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2017
- 2017-08-10 CN CN201720995041.8U patent/CN207368916U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107294442A (en) * | 2017-08-10 | 2017-10-24 | 浙江涵普电力科技有限公司 | DC machine control device and its safe starting method |
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