CN204068780U - A kind of built-in load all carries profile frequency converter - Google Patents
A kind of built-in load all carries profile frequency converter Download PDFInfo
- Publication number
- CN204068780U CN204068780U CN201420505568.4U CN201420505568U CN204068780U CN 204068780 U CN204068780 U CN 204068780U CN 201420505568 U CN201420505568 U CN 201420505568U CN 204068780 U CN204068780 U CN 204068780U
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- setting circuit
- frequency converter
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Abstract
The utility model discloses a kind of built-in load and all carry profile frequency converter, MCU arranges bus setting circuit, analog voltage setting circuit and analog current setting circuit, Speed Setting sends to every platform frequency converter by bus mode or analog quantity mode, every platform frequency converter runs in the ratio that presets of speed setting value, detect motor real work electric current to be exported by analog quantity AM2 after MCU process simultaneously, and deliver to the analog quantity IG input interface of other frequency converters, the current signal of the motor of appearing on the stage received and the electric current of oneself compare and carry out PID arithmetic by this frequency converter, operation result and rate setting signal phase Calais are adjusted motor running frequency, its two even electric current of multiple electric motors is made to meet predetermined ratio, pre-provisioning request is met to realize load-rate of motor in system.
Description
Technical field
The utility model relates to field of electrical components, is specifically related to a kind of built-in load and all carries profile frequency converter.
Background technology
When a power of motor cannot drive a load, or same equipment because of technique or other reasons need multiple electric motors to drive same load simultaneously time, such as in high ferro or subway train, for ensureing its stability of running at high speed, every root axle is needed to keep corresponding actuating force, every root axle is just needed to be equipped with a drive motors, multiple electric motors drives train to run at high speed jointly, this just needs two motors jointly to drive the Driving Torque having a proper ratio during load, so the load factor be badly in need of wanting a kind of load all to carry frequency converter and made two output power of motors keep substantially identical.
Utility model content
For above-mentioned technical problem, the utility model provides a kind of built-in load all to carry profile frequency converter, multiple Speed Setting mode reserved by this frequency converter, according to the Driving Torque of the ratio self-regulation motor of every platform motor actual output current, make the load factor that every platform output power of motor keeps substantially identical.
The utility model solves the technical scheme that its technical problem adopts:
A kind of built-in load all carries profile frequency converter, and single-chip microprocessor MCU arranges bus setting circuit, analog voltage setting circuit, analog current setting circuit;
Described bus setting circuit comprises the rc filter circuit connected with single-chip microprocessor MCU, the rc filter circuit other end connects input resistance, the input resistance other end is coupled in series two rp-op amps and a homophase operational amplifier successively, homophase operational amplifier output terminal arranges connection transistor collector, homophase operational amplifier in-phase input end connects with transistor base, inverting input connects with transistor emitter and connects on circuit and arranges branched line, this branched line is arranged series limiting resistor and feedback resistance, and be attached between above-mentioned input resistance and the rp-op amp inverting input connected with it,
Described analog voltage setting circuit arranges connection impedance matching resistor at voltage signal inputs, impedance matching resistor mates with prime input voltage signal, reduce the interference of long range propagation, connect impedance matching resistor two ends and arrange differential amplifier, differential amplifier end arranges connection rc filter circuit;
Described analog current setting circuit arranges connection current sampling resistor at current signal input, and connect current sampling resistor two ends and arrange differential amplifier, differential amplifier end arranges connection rc filter circuit.
Further, the differential amplifier of described analog voltage setting circuit connects input resistance respectively at impedance matching resistor two ends, two input resistances respectively with a feedback resistance parallel connection to operational amplifier two inputs.
Further, in the rc filter circuit of described analog voltage setting circuit, forward and reverse limiter diode is set, protects the AD input port of rear class MCU.
Further, the differential amplifier of described analog current setting circuit connects input resistance respectively at current sampling resistor two ends, two input resistances respectively with a feedback resistance parallel connection to operational amplifier two inputs.
Further, in the rc filter circuit of described analog current setting circuit, forward and reverse limiter diode is set, protects the AD input port of rear class MCU.
The beneficial effects of the utility model are:
Multiple Speed Setting mode reserved by frequency converter described in the utility model, bus setting, analog voltage setting and analog current setting, frequency converter also can run in the ratio within the scope of the 0-200% of set point simultaneously, use with the combination in any of satisfied different no-load voltage ratio and different capacity motor, for ensureing that output torque in Dynamic Regulating Process of Governing System keeps setting ratio, Design of Inverter has and meets distribution function.
Speed Setting sends to every platform frequency converter by bus mode or analog quantity mode, every platform frequency converter runs in the ratio that presets of speed setting value, detect motor real work electric current to be exported by analog quantity AM2 after MCU process simultaneously, and deliver to the analog quantity IG input interface of other frequency converters, the current signal of the motor of appearing on the stage received and the electric current of oneself compare and carry out PID arithmetic by this frequency converter, operation result and rate setting signal phase Calais are adjusted motor running frequency, its two even electric current of multiple electric motors is made to meet predetermined ratio, pre-provisioning request is met to realize load-rate of motor in system.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment schematic diagram;
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figure 1, a kind of built-in load all carries profile frequency converter, and single-chip microprocessor MCU arranges bus setting circuit, analog voltage setting circuit, analog current setting circuit;
Described bus setting circuit comprises the rc filter circuit connected with single-chip microprocessor MCU, comprise resistance R20 and electric capacity C3, the rc filter circuit other end connects input resistance R19, the input resistance R19 other end is coupled in series two rp-op amp CF5 successively, a CF4 and homophase operational amplifier CF3, homophase operational amplifier CF3 output arranges and connects triode V1 collector electrode, homophase operational amplifier CF3 in-phase input end connects with triode V1 base stage, inverting input connects with triode V1 emitter and connects on circuit and arranges branched line, this branched line is arranged series limiting resistor R22 and feedback resistance R21, and be attached between above-mentioned input resistance R19 and the rp-op amp CF5 inverting input connected with it,
Described analog voltage setting circuit arranges at voltage signal inputs to connect impedance matching resistor R1, impedance matching resistor R1 mates with prime input voltage signal, reduce the interference of long range propagation, input resistance R2 and R7 is connected respectively at impedance matching resistor R1 two ends, two input resistance R2 and R7 respectively with feedback resistance R3 and R6 parallel connection to operational amplifier CF1 two inputs, operational amplifier CF1 output arranges connection rc filter circuit, comprise resistance R4 and electric capacity C1, positive limiting diode and reverse clipping diode VD1 and VD2 are set in this rc filter circuit, the AD input port of protection rear class MCU,
Described analog current setting circuit arranges at current signal input to connect current sampling resistor R8; input resistance R9 and R14 is connected respectively at current sampling resistor R8 two ends; two input resistance R9 and R14 respectively with feedback resistance R10 and R13 parallel connection to operational amplifier CF2 two inputs; operational amplifier CF2 output arranges connection rc filter circuit; comprise resistance R11 and electric capacity C2; positive limiting diode and reverse clipping diode VD3 and VD4 are set in this rc filter circuit, the AD input port of protection rear class MCU.
Claims (5)
1. built-in load all carries a profile frequency converter, it is characterized in that:
Single-chip microprocessor MCU arranges bus setting circuit, analog voltage setting circuit and analog current setting circuit;
Described bus setting circuit comprises the rc filter circuit connected with single-chip microprocessor MCU, the rc filter circuit other end connects input resistance, the input resistance other end is coupled in series two rp-op amps and a homophase operational amplifier successively, homophase operational amplifier output terminal arranges connection transistor collector, homophase operational amplifier in-phase input end connects with transistor base, inverting input connects with transistor emitter and connects on circuit and arranges branched line, this branched line is arranged series limiting resistor and feedback resistance, and be attached between above-mentioned input resistance and the rp-op amp inverting input connected with it,
Described analog voltage setting circuit arranges connection impedance matching resistor at voltage signal inputs, and connect impedance matching resistor two ends and arrange differential amplifier, differential amplifier end arranges connection rc filter circuit;
Described analog current setting circuit arranges connection current sampling resistor at current signal input, and connect current sampling resistor two ends and arrange differential amplifier, differential amplifier end arranges connection rc filter circuit.
2. a kind of built-in load as claimed in claim 1 all carries profile frequency converter, it is characterized in that: the differential amplifier of described analog voltage setting circuit connects input resistance respectively at impedance matching resistor two ends, two input resistances respectively with a feedback resistance parallel connection to operational amplifier two inputs.
3. a kind of built-in load as claimed in claim 1 or 2 all carries profile frequency converter, it is characterized in that: arrange forward and reverse limiter diode in the rc filter circuit of described analog voltage setting circuit.
4. a kind of built-in load as claimed in claim 1 all carries profile frequency converter, it is characterized in that: the differential amplifier of described analog current setting circuit connects input resistance respectively at current sampling resistor two ends, two input resistances respectively with a feedback resistance parallel connection to operational amplifier two inputs.
5. the built-in load of the one as described in claim 1 or 4 all carries profile frequency converter, it is characterized in that: arrange forward and reverse limiter diode in the rc filter circuit of described analog current setting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505568.4U CN204068780U (en) | 2014-09-04 | 2014-09-04 | A kind of built-in load all carries profile frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420505568.4U CN204068780U (en) | 2014-09-04 | 2014-09-04 | A kind of built-in load all carries profile frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204068780U true CN204068780U (en) | 2014-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420505568.4U Expired - Fee Related CN204068780U (en) | 2014-09-04 | 2014-09-04 | A kind of built-in load all carries profile frequency converter |
Country Status (1)
| Country | Link |
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| CN (1) | CN204068780U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257617A (en) * | 2020-01-19 | 2020-06-09 | 苏州英威腾电力电子有限公司 | Multi-power-section voltage and current sampling method, device and system |
-
2014
- 2014-09-04 CN CN201420505568.4U patent/CN204068780U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111257617A (en) * | 2020-01-19 | 2020-06-09 | 苏州英威腾电力电子有限公司 | Multi-power-section voltage and current sampling method, device and 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 |
Granted publication date: 20141231 Termination date: 20170904 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |