Frequency converterTechnical field
The utility model relates to industrial control field, relates in particular to a kind of frequency converter.
Background technology
Frequency converter is to utilize the on-off action of power semiconductor device power frequency supply to be transformed to the electric energy control device of another frequency, can realize soft start, frequency control, raising running accuracy to AC induction motor, change the functions such as power factor, overcurrent/overvoltage/overload protection.
Fig. 1 is the organigram of a kind of execution mode of current frequency converter, as shown in Figure 1, this frequency converter 100 comprises: drive division 101, motor control substrate 102, PLC (Programmable Logic Controller, programmable logic controller (PLC)) substrate 103 and PG (Pulse Generator, pulse generator) selection substrate 104.Wherein, drive division 101 is arranged in a housing; Motor control substrate 102 is electrically connected with this drive division 101, but it is arranged in another housing of the housing that is different from drive division 101 places; PLC substrate 103 is arranged at the top of motor control substrate 102, be electrically connected, and this PLC substrate 103 is not arranged in the housing at these motor control substrate 102 places, but is arranged at this outside with this motor control substrate 102; This PG selects substrate 104 to be arranged at the top of this PLC substrate 103, is electrically connected with this PLC substrate 103.
Fig. 2 is the organigram of the another kind of execution mode of current frequency converter, as shown in Figure 2, this frequency converter 200 also comprises: drive division 201, motor control substrate 202, PLC substrate 203 and PG select substrate 204, different from the frequency converter shown in Fig. 1 is, in this embodiment, PG selects substrate 204 and PLC substrate 203 to be integrated into one, and also, the function of pulse generator (PG) is integrated on PLC substrate 203.
Should be noted that above the introduction of technical background is just carried out to clear, complete explanation for convenient to the technical solution of the utility model, and facilitate those skilled in the art's understanding to set forth.Can not only carry out setting forth and thinking that technique scheme is conventionally known to one of skill in the art in background technology part of the present utility model because of these schemes.
Utility model content
There is following shortcoming in the frequency converter of Fig. 1: 1) is unfavorable for one-body molded; 2) dispose motor control substrate and PG across PLC substrate and select substrate, if there is no PLC substrate, cannot individual operation motor; 3) cannot evaluate PG selects the combination of substrate and motor control substrate such as, as the control performance of frequency converter monomer, torque pulsation etc.
There is following shortcoming in the frequency converter of Fig. 2: 1), owing to carrying the function of PG selection substrate on PLC substrate, in order to tackle the PG detection mode of various mode, needs the PLC substrate of multiple kinds; 2) cannot evaluate PG and for example select the combination of substrate and motor control substrate, as the motor control performance of frequency converter monomer, torque pulsation).
In addition, in the frequency converter of Fig. 1 and Fig. 2, motor control substrate (102,202) is arranged in a housing, in the time that needs carry out setting value to it, the PLC substrate (103,203) that need to dismantle and be located thereon on the one hand, also to open on the other hand the housing at its place, operation inconvenience.
The utility model provides a kind of frequency converter, to solve the problems of the technologies described above.
According to the first aspect of embodiment of the present utility model, a kind of frequency converter is provided, wherein, described frequency converter comprises:
Drive division, it is placed in the first housing, for CD-ROM drive motor;
The first control part, it is electrically connected with described drive division, and is placed in the second housing beyond described the first housing, controls for controlling speed and/or the position of rotation of described drive division to motor;
The second control part, it is electrically connected with described the first control part, and is placed in described the second housing, for according to the first control part described in external command control.
So, be convenient to the first control part and the second control part to carry out setting value.
According to the second aspect of embodiment of the present utility model, a kind of frequency converter as described in first aspect is provided, wherein, described frequency converter also has:
Test section, it is electrically connected with described the first control part, and be placed in described the second housing, for detection of the current speed of motor and/or position of rotation, and the information detecting is offered to described the first control part, so that speed and/or the position of rotation of drive division to motor controlled described in the information control that described the first control part detects according to described test section.
So, test section is directly electrically connected with the first control part, can provides widely frequency converter portion to the PLC manufacturer of the all-in-one exploitation of expecting frequency converter and PLC.
According to the third aspect of embodiment of the present utility model, a kind of frequency converter as described in second aspect is provided, wherein, the information getting from described test section is offered described the second control part by described the first control part, so that described the second control part is with reference to the first control part described in described information control.
So, the pulse information that test section detects offers the second control part, and the second control part can be crossed and control the first control part and carry out the rotation of CD-ROM drive motor with reference to this information exchange.
According to the fourth aspect of embodiment of the present utility model, a kind of frequency converter as described in second aspect is provided, wherein, described test section obtains initial information from described the first control part, carries out initialization process according to the initial information getting.
So, test section obtains for carrying out initialized information from the first control part, is convenient to initialization or restarts.
According to the 5th aspect of embodiment of the present utility model, a kind of frequency converter as described in second aspect is provided, wherein, described the first control part is carried on first substrate, described the second control part is carried on second substrate, described test section is carried on the 3rd substrate, and described second substrate and described the 3rd substrate are arranged side by side the top in described first substrate.
So, be beneficial to the layout of distribution, simplified wiring configuration.
According to the 6th aspect of embodiment of the present utility model, a kind of frequency converter as described in the 5th aspect is provided, wherein, described second substrate and described the 3rd substrate be all arranged at the opposed position of described first substrate on.
So, be more conducive to access second substrate and the 3rd substrate, be convenient to the setting of numerical value.
According to the 7th aspect of embodiment of the present utility model, a kind of frequency converter as described in first aspect is provided, and wherein, described the first control part is carried on first substrate, described the second control part is carried on second substrate, and described second substrate is arranged at the top of described first substrate.
So, be more conducive to access second substrate, can provide more easily external command.
According to the eight aspect of embodiment of the present utility model, described the first control part is carried on first substrate, described the second control part is carried on second substrate, described test section is carried on the 3rd substrate, described second substrate is arranged at the top of described first substrate, and described the 3rd substrate is arranged at the cross side of described first substrate.
So, be more conducive to access second substrate, can provide more easily external command.
The beneficial effects of the utility model are: by frequency converter of the present utility model, simplified wiring configuration, be more conducive to the realization of frequency converter.
With reference to explanation and accompanying drawing hereinafter, specific implementations of the present utility model is disclosed in detail, having indicated principle of the present utility model can adopted mode.Should be appreciated that, execution mode of the present utility model in scope not thereby be restricted.In the spirit of claims and the scope of clause, execution mode of the present utility model comprises many changes, revises and is equal to.
Describe and/or the feature that illustrates can be used in same or similar mode in one or more other execution mode for a kind of execution mode, combined with the feature in other execution mode, or substitute the feature in other execution mode.
Should emphasize, term " comprises/comprises " existence that refers to feature, whole, step or assembly while use herein, but does not get rid of the existence of one or more further feature, whole, step or assembly or additional.
Brief description of the drawings
Included accompanying drawing is used to provide the further understanding to embodiment of the present utility model, and it has formed a part for specification, for illustrating execution mode of the present utility model, and comes together to explain principle of the present utility model with text description.Apparently, the accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skill in the art, is not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.In the accompanying drawings:
Fig. 1 is the organigram of an execution mode of current frequency converter;
Fig. 2 is the organigram of another execution mode of current frequency converter;
Fig. 3 is the schematic diagram of an execution mode of the structure of the frequency converter of embodiment of the present utility model;
Fig. 4 is the schematic diagram of another execution mode of the structure of the frequency converter of embodiment of the present utility model;
Fig. 5 is the schematic diagram of another execution mode of the structure of the frequency converter of embodiment of the present utility model;
Fig. 6 is the circuit module schematic diagram of the frequency converter of embodiment of the present utility model.
Embodiment
With reference to accompanying drawing, by specification below, aforementioned and further feature of the present utility model will become obvious.In specification and accompanying drawing, specifically disclose specific implementations of the present utility model, it has shown wherein can adopt the part execution mode of principle of the present utility model, will be appreciated that, the utility model is not limited to described execution mode, on the contrary, the utility model comprises whole amendments, modification and the equivalent in the scope that falls into claims.
Embodiment of the present utility model provides a kind of frequency converter, and Fig. 3 is the organigram of this frequency converter 300, and as shown in Figure 3, this frequency converter comprises: drive division 31, the first control part 32 and the second control part 33.
This drive division 31 is arranged in the first housing 34, for CD-ROM drive motor.
In the present embodiment, this drive division 31 can comprise: rectification circuit, the smoothing circuit (filter circuit) being connected with this rectification circuit and current converter circuit of being connected with this smoothing circuit etc., this rectification circuit, smoothing circuit and current converter circuit etc. are for realizing the driving function of this drive division 31, its control mode can, with reference to prior art, repeat no more here.
This first control part 32 is electrically connected with this drive division 31, and it is arranged in the second housing 35 that is different from this first housing 34, controls for controlling speed and/or the position of rotation of this drive division 31 to motor.
In the present embodiment, this first control part 32 is realized by motor control circuit, and this motor control circuit is carried on a substrate, is called in the present embodiment first substrate.This first control part 32 is for realizing the function of motor control, for example control speed, the position of rotation etc. of motor by controlling drive division 31, this first control part 32 can send to corresponding control information the drive division 31 being electrically connected with it, is sent instruction and control the rotation of this motor by this drive division 31 to motor.Its concrete realization can, with reference to prior art, repeat no more here.
This second control part 33 is electrically connected with this first control part 32, and it is arranged in identical housing with this first control part 32, and also in the second housing 35, as previously mentioned, this second control part 33 is for according to this first control part 32 of external command control.
In the present embodiment, this second control part 33 is realized by PLC control circuit, and this PLC control circuit is also carried on a substrate, is called in the present embodiment second substrate.It controls function also can be with reference to prior art, and part same as the prior art repeats no more here.
In the present embodiment, the shell that this second housing 35 is generally this frequency converter.And this first housing 34 and this second housing 35 can be resins, can be also other materials.
By the frequency converter of the present embodiment, the second control part 33 and the first control part 32 are arranged in identical housing, also in the shell of this frequency converter, convenient this second control part 33 and the first control part 32 are carried out to setting value, and simplified wiring and arranged.
In an execution mode of the present embodiment, this frequency converter also comprises: test section 36, as shown in Figure 4 and Figure 5.
This test section 36 is electrically connected with this first control part 32, and it is also placed in the second housing 35, for detection of the current speed of motor and/or position of rotation, and the information detecting is offered to the first control part 32, so that the information exchange that this first control part 32 detects according to this test section 36 is crossed speed and/or the position of rotation controlling drive division 31 and then control motor, as previously mentioned.
In the present embodiment, this test section 36 selects circuit to realize by PG, and this PG selects circuit to be also carried on a substrate, is called in the present embodiment the 3rd substrate.The signal that this test section 36 detects is pulse signal, this pulse signal is offered the first control part 32 by it, the first control part 32 can determine motor is carried out to what kind of control accordingly, for example, that the speed of raising motor or the speed of reduction motor or the speed that maintains motor are constant, adjust the position of rotation of motor or keep the position of rotation of motor constant, if need to adjust the position of rotation of motor, how to adjust, and adjust to any degree, etc., corresponding control information is sent to drive division 31 by the first control part 32, send instruction by this drive division 31 to motor, CD-ROM drive motor is made corresponding adjustment.
By the structure of present embodiment, the exploitation of the frequency converter that determines motor control performance can be separated with the exploitation of PLC substrate, and the two is developed jointly, and by this structure, can provide widely frequency converter portion to the PLC manufacturer of the all-in-one exploitation of expecting frequency converter and PLC.In addition, select circuit to be directly electrically connected with motor control circuit PG, be convenient to transmit data, simplified wiring and arranged, and be easy to independent realization of PG selection circuit.
In an execution mode of the present embodiment, the information getting from test section 36 is offered the second control part 33 by the first control part 32, so that this second control part 33 is with reference to this first control part 32 of this information control.Thus, this second control part 33 not only can, according to this first control part 32 of external command control, can also be controlled this first control part 32 with further reference to this information.
In this embodiment, as previously mentioned, PG select electric circuit inspection to be pulse signal, and this pulse signal is provided motor control circuit by it, motor control circuit, except sending to drive division this pulse signal, also offers PLC control circuit by this pulse signal, thus, PLC control circuit can be controlled motor control circuit with reference to this information, has improved the precision of controlling.
In an execution mode of the present embodiment, test section 36 can obtain initial information from the first control part 32, carries out initialization process according to the initial information getting.In this embodiment, this initial information can be stored in the first control part 32, for example be stored in the memory of motor control circuit of the function that realizes this first control part 32, also can be stored in the drive division 31 being electrically connected with this first control part 32, for example be stored in the memory of each circuit of this drive division 31, as intermediary, this initial information offered to test section 36 from drive division 31 by this first control part 32.Below just illustrate, but the present embodiment is not using this as restriction.
By the structure of present embodiment, PG selects circuit to obtain for carrying out initialized information from motor control circuit, is convenient to PG and selects the initialization of circuit or restart.
In an execution mode of the present embodiment, the second substrate that carries above-mentioned the second control part 33 is arranged side by side in the top of the first substrate of above-mentioned the first control part 32 of carrying with the 3rd substrate of the above-mentioned test section 36 of carrying, as shown in Figure 4, thus, be more conducive to test section 36 and arrange with the wiring being electrically connected of the first control part 32, simplified wiring.
In the present embodiment, second substrate and the 3rd substrate be all arranged at the opposed position of first substrate on, thus, be more conducive to access second substrate and the 3rd substrate, be convenient to the setting of numerical value.
In another execution mode of the present embodiment, the second substrate that carries above-mentioned the second control part 33 is arranged at the top of the first substrate of above-mentioned the first control part 32 of carrying, the 3rd substrate that carries above-mentioned test section 36 is arranged at the cross side of the first substrate of described the first control part 32 of carrying, as shown in Figure 5, thus, more be conducive to access second substrate, can provide more easily external command.
In another execution mode of the present embodiment, if there is no test section 36, the second substrate that carries the second control part 33 is arranged at the top of the first substrate of carrying the first control part 32, as shown in Figure 3, thus, be more conducive to access second substrate, can provide more easily external command.
Please refer to Fig. 3, this frequency converter 300, except constitute and function described above, can also comprise other constitute and function again, example module 37 as shown in Figure 3, and the specific implementation of this other constitute and function can, with reference to prior art, repeat no more herein.
Fig. 6 is the connection diagram of the circuit module of the frequency converter of the present embodiment, and as shown in Figure 6, this frequency converter comprises that rectification circuit 61, smoothing circuit 62, current converter circuit 63, motor control circuit 64, PLC control circuit 65 and PG select circuit 66.
Wherein, rectification circuit 61, smoothing circuit 62 and current converter circuit 63 have formed aforesaid drive division, motor control circuit 64 has formed aforementioned the first control part, and PLC control circuit 65 has formed aforementioned the second control part, and PG selects circuit 66 to form aforesaid test section.Due to above, the 26S Proteasome Structure and Function of drive division, the first control part, the second control part and test section is described in detail, in this description will be omitted.
Wherein, drive division is arranged in a housing, the first substrate of bearing motor control circuit 64, second substrate and the carrying PG of carrying PLC control circuit 65 select the 3rd substrate of circuit 66 to be arranged at beyond the housing at drive division place, as shown in Figure 3-Figure 5, do not repeat them here.
By the frequency converter of the present embodiment, simplify wiring configuration, be more conducive to the realization of frequency converter.
In conjunction with concrete execution mode, the utility model being described above, but it will be apparent to those skilled in the art that these descriptions are all exemplary, is not the restriction to the utility model protection range.Those skilled in the art can make various variants and modifications to the utility model according to spirit of the present utility model and principle, and these variants and modifications are also in scope of the present utility model.