CN205081715U - Energy -conserving automatic control circuit of electric power agitated vessel - Google Patents
Energy -conserving automatic control circuit of electric power agitated vessel Download PDFInfo
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- CN205081715U CN205081715U CN201520918070.5U CN201520918070U CN205081715U CN 205081715 U CN205081715 U CN 205081715U CN 201520918070 U CN201520918070 U CN 201520918070U CN 205081715 U CN205081715 U CN 205081715U
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Abstract
The utility model discloses an energy -conserving automatic control circuit of electric power agitated vessel, including reactor, surge controller, three -phase full -bridge controlled rectifier, active inverter, central processing unit and DSP power, active inverter connects surge controller, three -phase full -bridge controlled rectifier, voltage current detection module, fault protection output module, isolating driver circuit, energy -storage capacitor, passive contravariant converter and direct current voltage testing respectively, and energy -storage capacitor still connects the controllable rectifier bridge other end of three -phase full -bridge, servo motor group is still connected to passive contravariant converter. The utility model discloses energy -conserving automatic control circuit of electric power agitated vessel, the regeneration energy storage who produces when frequently brakeing servo motor group are in energy -storage capacitor, and when energy -storage capacitor both ends voltage reached the limit value, by central controller start -up active inverter, the energy that will store in energy -storage capacitor feedbacked the electric wire netting with the form of SPWM ripples, has effectively practiced thrift the energy.
Description
Technical field
The utility model relates to a kind of automatic control circuit, specifically the energy-conservation automatic control circuit of a kind of electric power mixing plant.
Background technology
Electric power mixing plant, all by Serve Motor Control, during the powered operation of servomotor, is run in the mode of motor, absorbs energy from electrical network; In servomotor braking procedure, be run in the mode of generator, oppositely export energy outward.How the regenerated energy that servomotor produces when fast braking and frequent rotating in running is recycled, had very large value for energy-conservation.Solution the most frequently used now utilizes power electronic technology, and half control type thyristor device is used for rectification, inverter circuit, to control the mode of the angle of flow, regenerated energy inversion during motor braking sent back to electrical network.This technology is quite ripe, but there is shortcomings: first, and owing to adopting half control type thyristor device, if inverse envelope control is improper, or thyristor breaks down, circuits for triggering work is unreliable, commutation allowance angle is not enough, all easily causes reversals failure.Secondly, Thyristor Controlled rectification circuit displacement factor, fundamental factor are lower, cause the wave distortion of electrical network electric energy serious, and the harmonic component in waveform is comparatively large, and circuit power factor is very low, greatly reduces the feedback quality of regenerative electric energy.
Utility model content
The purpose of this utility model is to provide a kind of electric power mixing plant energy-conservation automatic control circuit, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
The energy-conservation automatic control circuit of a kind of electric power mixing plant, comprise reactor, surge controller, three phase full bridge controlled rectifier, active inverter, central processing unit and DSP power supply, described active inverter connects surge controller respectively, three phase full bridge controlled rectifier, measure voltage & current module, error protection output module, isolated drive circuit, storage capacitor, passive inverter frequency converter and direct voltage detection module, storage capacitor also connects the three phase full bridge controllable rectifier bridge other end, described passive inverter frequency converter also connects servomotor group, described surge controller also connects AC network by reactor, described error protection output module also connects central processing unit, central processing unit also connects the measure voltage & current module other end respectively, DSP power supply, the direct voltage detection module other end and signal processing module, signal processing module also connects the driving isolation circuit other end.
As further program of the utility model: described central processing unit adopts TMS320F2812.
As further program of the utility model: described isolated drive circuit adopts IGBT isolated drive circuit.
As the utility model further scheme: described passive inverter frequency converter adopts IGBT voltage-type passive inverter frequency converter.
Compared with prior art, the beneficial effects of the utility model are: the energy-conservation automatic control circuit of the utility model electric power mixing plant, the regenerated energy produced during by servomotor group frequently being braked is stored in storage capacitor, when storage capacitor both end voltage reaches limit value, active inverter is started by central controller, the energy be stored in storage capacitor is fed back to electrical network with the form of SPWM ripple, effectively saves the energy.
Accompanying drawing explanation
Fig. 1 is the circuit structure block diagram of the energy-conservation automatic control circuit of electric power mixing plant.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, the energy-conservation automatic control circuit of a kind of electric power mixing plant, comprise reactor, surge controller, three phase full bridge controlled rectifier, active inverter, central processing unit and DSP power supply, described active inverter connects surge controller respectively, three phase full bridge controlled rectifier, measure voltage & current module, error protection output module, isolated drive circuit, storage capacitor, passive inverter frequency converter and direct voltage detection module, storage capacitor also connects the three phase full bridge controllable rectifier bridge other end, described passive inverter frequency converter also connects servomotor group, described surge controller also connects AC network by reactor, described error protection output module also connects central processing unit, central processing unit also connects the measure voltage & current module other end respectively, DSP power supply, the direct voltage detection module other end and signal processing module, signal processing module also connects the driving isolation circuit other end, described central processing unit adopts TMS320F2812, described isolated drive circuit adopts IGBT isolated drive circuit, described passive inverter frequency converter adopts IGBT voltage-type passive inverter frequency converter.
Operation principle of the present utility model is: electric power mixing plant is all by servomotor group control, refer to Fig. 1, the regenerated energy produced when servomotor group frequently brakes is stored in storage capacitor, when storage capacitor both end voltage reaches limit value, active inverter is started by central controller, the energy be stored in storage capacitor is fed back to electrical network with the form of SPWM ripple, effectively saves the energy.
In real-time control procedure, in order to produce the SPWM ripple signal with synchronized, need to implement tracking sampling to ac grid voltage electric current, this adopts electric current and voltage sampling module to complete, the design adopts Hall element collection signal, for improving signals collecting quality, need through firstorder filter, amplitude limiter circuit and emitter follower are connected on the analog input signal pin of central processing unit, Hall element output signal voltage is 0 ~ 5V, and TMS320F2812 analog input signal voltage range is 0 ~ 3V, this just requires that circuit must carry out level conversion, the design adopts electric resistance partial pressure to realize level conversion.
After on the analog input signal pin of sampled signal arrival central processing unit, signal conversion is carried out by the inner A/D change-over circuit of central controller, TMS320F2812ADC module is the analog to digital converter (ADC) of the band streamline of 12, and the analog circuit of AD conversion unit comprises forward simulation multiplexer switch (MUXs), sampling/keep (S/H) circuit, conversion kernel, Voltage Reference and other secondary analog circuit.ADC module has 16 passages, can be configured to 2 independently 8 channel modules, serves task manager EVA and EVB respectively, also can be cascaded into 16 channel modules.Each channel module can auto-sequencing, for each passage, once ADC converts, will transformation result be stored in result register (ADCRESULT), by rational interrupt processing and interrupt service subroutine, by the data reading in result register.
Required SPWM control signal during active inverter feedback energy, synchronous with AC network with pulse-width signal frequently, first, by AC network current and voltage signals by hysteresis comparison circuit, signal is produced at zero-acrross ing moment synchronous with power network signal with direct impulse frequently, then by the capturing unit of EVA or EVB in TMS320F2812, its direct impulse is caught.The catching of positive pulse each time, capturing unit all can store internal clocking number, the difference of the twice clock number event memory in front and back, be the clock periodicity of AC network signal, therefore, by catching in real time AC network signal, SPWM control signal real-time tracking power network signal can be made to change, synchronism and the periodicity of its signal are all equal to AC network signal, thus reach expection object.
, in feedback electrical network process, there is certain harmonic components in the SPWM inverter signal that three-phase inverter bridge circuit produces.Because the design have employed the control form of SPWM ripple, so during three-phase current inversion feedback grid, harmonic components is less, not containing the low-order harmonic relevant to modulating wave, the frequency harmonics also not containing triangular carrier integral multiple.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this specification is described according to execution mode, but not each execution mode only comprises an independently technical scheme, this narrating mode of specification is only for clarity sake, those skilled in the art should by specification integrally, and the technical scheme in each embodiment also through appropriately combined, can form other execution modes that it will be appreciated by those skilled in the art that.
Claims (4)
1. the energy-conservation automatic control circuit of electric power mixing plant, comprise reactor, surge controller, three phase full bridge controlled rectifier, active inverter, central processing unit and DSP power supply, it is characterized in that, described active inverter connects surge controller respectively, three phase full bridge controlled rectifier, measure voltage & current module, error protection output module, isolated drive circuit, storage capacitor, passive inverter frequency converter and direct voltage detection module, storage capacitor also connects the three phase full bridge controllable rectifier bridge other end, described passive inverter frequency converter also connects servomotor group, described surge controller also connects AC network by reactor, described error protection output module also connects central processing unit, central processing unit also connects the measure voltage & current module other end respectively, DSP power supply, the direct voltage detection module other end and signal processing module, signal processing module also connects the driving isolation circuit other end.
2. the energy-conservation automatic control circuit of electric power mixing plant according to claim 1, is characterized in that, described central processing unit adopts TMS320F2812.
3. the energy-conservation automatic control circuit of electric power mixing plant according to claim 1, is characterized in that, described isolated drive circuit adopts IGBT isolated drive circuit.
4. the energy-conservation automatic control circuit of electric power mixing plant according to claim 1, is characterized in that, described passive inverter frequency converter adopts IGBT voltage-type passive inverter frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918070.5U CN205081715U (en) | 2015-11-18 | 2015-11-18 | Energy -conserving automatic control circuit of electric power agitated vessel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520918070.5U CN205081715U (en) | 2015-11-18 | 2015-11-18 | Energy -conserving automatic control circuit of electric power agitated vessel |
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| CN205081715U true CN205081715U (en) | 2016-03-09 |
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| CN201520918070.5U Expired - Fee Related CN205081715U (en) | 2015-11-18 | 2015-11-18 | Energy -conserving automatic control circuit of electric power agitated vessel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370444A (en) * | 2016-09-22 | 2017-11-21 | 淮阴师范学院 | A kind of servomotor energy-saving control system |
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2015
- 2015-11-18 CN CN201520918070.5U patent/CN205081715U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107370444A (en) * | 2016-09-22 | 2017-11-21 | 淮阴师范学院 | A kind of servomotor energy-saving control system |
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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: 20160309 Termination date: 20161118 |