CN205160417U - Generator rotor position estimation device - Google Patents
Generator rotor position estimation device Download PDFInfo
- Publication number
- CN205160417U CN205160417U CN201521010002.5U CN201521010002U CN205160417U CN 205160417 U CN205160417 U CN 205160417U CN 201521010002 U CN201521010002 U CN 201521010002U CN 205160417 U CN205160417 U CN 205160417U
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- computing circuit
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Abstract
The utility model discloses a generator rotor position estimation device, including three rotor phase signal sense terminal, a voltage stabilizing circuit for provide voltage source follower and reference voltage output, be used for adjusting the bleeder circuit of each rotor phase signal magnitude of voltage, this bleeder circuit has three input and three output, and every input is connected with three rotor phase signal sense terminal respectively, three arithmetic circuit, each arithmetic circuit all contains complex operation amplifier, two inputs and an output, the complex operation amplifier electricity connection each other of each arithmetic circuit, the input of each arithmetic circuit all is connected with bleeder circuit's output, the circuit structure of each arithmetic circuit is the same, the complex operation amplifier of each arithmetic circuit includes at least one comparator, at least one buffer and at least one amplifier. The utility model discloses simple structure, with low costs, estimation accuracy.
Description
Technical field
The utility model relates to a kind of device for estimating generator rotor position.
Background technology
Prior art is total, the device circuit complex structure of estimation generator rotor position, in order to reach high-voltage motor system and low pressure circuit for detecting is isolated or high impedance insulator, usually adopt optical coupler, but this must increase the cost of estimating apparatus.
On the other hand, in order to filtering PWM carrier wave and abrupt voltage wave, generally all adopt low pass filter, but therefore make estimating signal lag behind real rotor-position signal.
Therefore those skilled in the art be devoted to develop a kind of cost low, estimate generator rotor position estimating apparatus accurately.
Utility model content
Because the above-mentioned defect of prior art, technical problem to be solved in the utility model be to provide a kind of cost low, estimate generator rotor position estimating apparatus accurately.
For achieving the above object, the utility model provides a kind of generator rotor position estimating apparatus, comprises the first rotor phase signal test side, the second rotor phase input end and third trochanter phase signal test side; For providing the voltage stabilizing circuit that voltage source exports and reference voltage exports; For adjusting the bleeder circuit of each rotor phase signal voltage value, this bleeder circuit has three inputs and three outputs, and each input is connected with the first rotor phase signal test side, the second rotor phase input end and third trochanter phase signal test side respectively; First computing circuit, the second computing circuit and the 3rd computing circuit; Each computing circuit all comprises complex operation amplifier, two inputs and an output; The complex operation amplifier of each computing circuit is electrically connected to each other; First computing circuit, the second computing circuit are all connected with the output of bleeder circuit with the input of the 3rd computing circuit; First computing circuit, the second computing circuit are identical with the circuit structure of the 3rd computing circuit; The complex operation amplifier of each computing circuit comprises at least one comparator, at least one buffer and at least one amplifier.
The beneficial effects of the utility model are: the utility model structure is simple, cost is low, estimation is accurate.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model one embodiment.
Fig. 2 is the structural representation of the utility model one embodiment rotor.
Fig. 3 is the structural representation of bleeder circuit in the utility model one embodiment.
Fig. 4 is the structural representation of voltage stabilizing circuit in the utility model one embodiment.
Fig. 5 is the measured waveform figure of computing circuit in the utility model one embodiment.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail:
As shown in Figures 1 to 5, a kind of generator rotor position estimating apparatus, comprises the first rotor phase signal test side 11, second rotor phase input end 12 and third trochanter phase signal test side 13.
Estimating apparatus comprises the first computing circuit 4, second computing circuit 5 and the 3rd computing circuit 6.The circuit structure of each computing circuit is identical, includes one group of operational amplifier 40,50,60.Each group operational amplifier, according to the difference of passive device connected mode, includes two comparators 43,46,53,56,63,66, a buffer 44,54,64, and an amplifier 45,55,65.The operational amplifier 40,50,60 often organizing computing circuit is electrically connected in the mode of series connection respectively.Therefore, utilize this operational amplifier, optical coupler of the prior art can be replaced, the element that logic lock, low pass filter and flip-flop etc. are complicated, thus reduce costs, and reliability and durability.
As shown in Figure 3, for adjusting the bleeder circuit 3 of each rotor phase signal voltage value, this bleeder circuit has three inputs 31,32, and 33, and three outputs.Each input is connected with the first rotor phase signal test side 11, second rotor phase input end 12 and third trochanter phase signal test side 13 respectively, in bleeder circuit, utilize the difference of resistance ratio to carry out step-down action, adjust the magnitude of voltage of each phase signal test side 11,12 and 13, cause IC to damage to avoid too high magnitude of voltage.
In the present embodiment, the ratio of each resistance of bleeder circuit 3 is 4:1, therefore output 301, and 302,303 can only provide lower magnitude of voltage to the computing circuit of three shown in Fig. 14,5, in 6.The magnitude of voltage of bleeder circuit need between 5-30 volt, too low, comparator is lost efficacy, too high then possible damage comparison device.
As shown in Figure 4, in the voltage stabilizing circuit 2 for providing voltage source output and reference voltage to export, near external power interface, there is electric capacity, thus making the circuit supply that voltage stabilizing circuit provides stable.Two resistance of voltage stabilizing circuit 2 provide two kinds of different voltages and export, and one be the voltage output 21 of 5V, and it connects the power source supply end (not shown) of each operational amplifier, for operational amplifier provides driving voltage.It is 2.5V that another voltage of voltage stabilizing circuit 2 exports 22, and comparator 46,56 in its connection layout 1, the inverting input of 66, provides reference voltage to comparator.
As shown in figures 1 and 3, the output 301 of bleeder circuit 3 is electrically connected with the input 62 of the input 41 of the first computing circuit 4 and the 3rd computing circuit 6; The output 302 of bleeder circuit 3 is electrically connected with the input 51 of the input 42 of the first computing circuit 4 and the second computing circuit 5; The output 303 of bleeder circuit 3 is electrically connected with the input 61 of the input 52 of the second computing circuit 5 and the 3rd computing circuit 6.Therefore, the mode compared between two by signal, after bringing computing circuit into, is obtained the estimation waveform of rotor-position by the output 47,57,67 of each computing circuit 4,5,6.
As shown in Figure 5, for the first computing circuit 4, in figure, two wavy lines comprise the Line To Line voltage 72 of original input signal and the estimation voltage 71 of output signal, through the effect of complex operation amplifier 40, the position signalling of rotor is made to become the square of comparatively easily estimation from the analogy string ripple of Line To Line voltage 72.In Fig. 5, each lattice of the along slope coordinate of Line To Line voltage 72 are 200mV, and each lattice of along slope coordinate of estimation voltage 71 are 1V.
More than describe preferred embodiment of the present utility model in detail.Should be appreciated that those of ordinary skill in the art just can make many modifications and variations according to design of the present utility model without the need to creative work.Therefore, all technical staff in the art according to design of the present utility model on the basis of existing technology by the available technical scheme of logical analysis, reasoning, or a limited experiment, all should by the determined protection range of claims.
Claims (1)
1. a generator rotor position estimating apparatus, comprises the first rotor phase signal test side, the second rotor phase input end and third trochanter phase signal test side; For providing the voltage stabilizing circuit that voltage source exports and reference voltage exports; For adjusting the bleeder circuit of each rotor phase signal voltage value, this bleeder circuit has three inputs and three outputs, and each input is connected with the first rotor phase signal test side, the second rotor phase input end and third trochanter phase signal test side respectively; First computing circuit, the second computing circuit and the 3rd computing circuit; Each computing circuit all comprises complex operation amplifier, two inputs and an output; The complex operation amplifier of each computing circuit is electrically connected to each other; First computing circuit, the second computing circuit are all connected with the output of bleeder circuit with the input of the 3rd computing circuit; It is characterized in that:
First computing circuit, the second computing circuit are identical with the circuit structure of the 3rd computing circuit; The complex operation amplifier of each computing circuit comprises at least one comparator, at least one buffer and at least one amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521010002.5U CN205160417U (en) | 2015-12-08 | 2015-12-08 | Generator rotor position estimation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521010002.5U CN205160417U (en) | 2015-12-08 | 2015-12-08 | Generator rotor position estimation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205160417U true CN205160417U (en) | 2016-04-13 |
Family
ID=55696060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521010002.5U Expired - Fee Related CN205160417U (en) | 2015-12-08 | 2015-12-08 | Generator rotor position estimation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205160417U (en) |
-
2015
- 2015-12-08 CN CN201521010002.5U patent/CN205160417U/en not_active Expired - Fee Related
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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: 20160413 Termination date: 20181208 |