CN202713166U - Large-power four-quadrant converter and electric power transformation device - Google Patents
Large-power four-quadrant converter and electric power transformation device Download PDFInfo
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- CN202713166U CN202713166U CN 201220289242 CN201220289242U CN202713166U CN 202713166 U CN202713166 U CN 202713166U CN 201220289242 CN201220289242 CN 201220289242 CN 201220289242 U CN201220289242 U CN 201220289242U CN 202713166 U CN202713166 U CN 202713166U
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Abstract
The utility model relates to a large-power four-quadrant converter, which comprises a rectification module, an inversion module and a control module. The rectification module comprises one or more than two rectification units in parallel connection, wherein each rectification unit comprises a filter unit and a power unit, which are mutually connected with each other. The inversion module is connected with the rectification module through a direct-current bus, and the inversion module comprises one or more than two power units in parallel connection. The control module comprises multiple optical modules. Each optical module is connected with the rectification module and the power unit in the inversion module respectively through an optical fiber to control the work of the rectification module and the inversion module. The rectification module and each power unit in the inversion module are correspondently connected with one optical module. The utility model also discloses an electric power transformation device. The large-power four-quadrant converter and the electric power transformation device disclosed by the embodiment of the utility model have the advantages of high flexibility and high real-time property.
Description
Technical field
The utility model relates to electronic applications, particularly a kind of high-power four-quadrant frequency converter and power-converting device.
Background technology
Along with the energy-saving and emission-reduction policy of country deeply promotes, motor adopts the ratio of frequency control more and more higher as large current consuming apparatus.But what traditional universal frequency converter used is that diode is not controlled commutation technique, this one-way transmission that can only realize that electric energy flows from electrical network to motor side, and do not possess the function of energy feedback, therefore energy-saving effect is not efficient.In addition, in some powerful application, diode rectifier bridge produces serious harmonic pollution to electrical network, has seriously influenced the power supply quality of electrical network.In order to realize better energy-saving effect, generally adopt in the prior art four-quadrant frequency converter, it not only can realize energy two-way flow between electrical network and motor, can also increase energy-saving effect, can also adjust simultaneously the input power factor of frequency converter, elimination is to the harmonic pollution of electrical network, and then allows frequency converter really become " green product ".
Fig. 1 is a kind of high-power four-quadrant frequency converter system in the prior art, and this system comprises rectifying part 301, Converting Unit 302, rectification control section 303 and inversion control part 304.Wherein rectifying part 301 and Converting Unit 302 all are to be composed in parallel by a plurality of power cells 305, each power cell 305 of rectifying part 301 is connected with AC reactor 306, and, the power supply of this system and rectifying part 301 integrated connections have an input reactance device 307, like this so that high-power four-quadrant frequency converter system bulk of the prior art is large, cost is high, on the other hand, because each AC reactor 306, input reactance device 307 are independent installations, like this so that the maintainability of system reduction, dumb.When the power demand of system changed, the number of power cell 305 needed to change, and input reactance device 307 needs again development and Design, had strengthened the difficulty of frequency converter exploitation.
In addition, present high-power four-quadrant frequency converter of the prior art system all adopts electrical connection, this connected mode causes control that time-delay is arranged owing to there is higher time delay in system's electric signal transmission so that the connection of system is complicated, anti-electromagnetic interference is weak, electrical loss is also larger simultaneously.
The utility model content
In view of this, the utility model embodiment provides flexibility and the high and low-loss high-power four-quadrant frequency converter of real-time and power-converting device.
A kind of high-power four-quadrant frequency converter comprises rectification module, inversion module and control module.Rectification module comprises the rectification unit that one or more is connected in parallel, be used for and convert direct current signal to from the AC signal of electrical network input, wherein, described rectification unit comprises interconnective filter unit and power cell, described filter unit is used for carrying out filtering from the AC signal of electrical network input, and described power cell is used for and will converts direct current signal to through the AC signal after the described filtering unit filters.Inversion module links to each other with described rectification module by dc bus, comprises the power cell that one or more is connected in parallel, and is used for converting the direct current signal of described rectification module output to frequency adjustable AC signal.Control module and described rectification module be connected inversion module and be connected, comprise a plurality of optical modules, described optical module is connected with the power cell of being connected in the inversion module by optical fiber and described rectification module, to control the work of described rectification module and described inversion module, wherein, described rectification module be connected that each power cell in the inversion module is all corresponding to connect an optical module.
Preferably, the power cell of described rectification module is identical with the power cell of described inversion module, and described power cell includes dc terminal and exchanges end, described filter unit comprises input and output, wherein, the input of described filter unit links to each other to receive AC signal with described electrical network, the output of described filter unit links to each other with the interchange end of corresponding power cell, and the dc terminal of the power cell of described correspondence links to each other with described dc bus.
Preferably, described inversion module comprises direct-flow input end and ac output end, wherein, the direct-flow input end of described inversion module is connected with described dc bus, and the ac output end of described inversion module is used for the adjustable AC signal of the described frequency of output after conversion with drive motors.
Preferably, described filter unit comprises a plurality of network reactors and a plurality of rectification reactor, wherein, described a plurality of network reactor links to each other respectively to receive AC signal with described electrical network, the input of described a plurality of rectification reactors is connected with the output of described a plurality of network reactors respectively, and the output of the described a plurality of rectification reactors power cell corresponding with described filter unit connects.
Preferably, described filter unit also comprises a plurality of electric capacity and a plurality of damping resistance, wherein, described a plurality of electric capacity connects by angle scheme mode or star-star connection mode, one end of described a plurality of damping resistances connects respectively the node between the input of the output of described a plurality of network reactors and described a plurality of rectification reactors, and the other end of described a plurality of damping resistances connects with the described a plurality of electric capacity that are connected by angle scheme mode or star-star connection mode respectively.
Preferably, described control module comprises rectification control submodule and inversion control submodule, rectification control submodule, be connected with described rectification module, be used for controlling described rectification module, comprise a plurality of optical modules, the optical module of described rectification control submodule is by corresponding each power cell that connects rectification module of optical fiber; And the inversion control submodule, be connected with described inversion module, be used for controlling described inversion module, comprise a plurality of optical modules, the optical module of described inversion control submodule is by corresponding each power cell that connects inversion module of optical fiber.
A kind of power-converting device comprises above-mentioned any one high-power four-quadrant frequency converter and motor.
Preferably, described power-converting device comprises a plurality of rectification modules and one or more inversion module, and the ac output end of described one or more inversion module is connected with acting in conjunction in described motor.
Preferably, described control module comprises a plurality of rectification control submodules and one or more inversion control submodule, the number of described rectification control submodule is identical with the number of described rectification module and all continuous by optical fiber, and the number of described inversion control submodule is identical with the number of described inversion module and all continuous by optical fiber.
Preferably, described rectification control submodule also comprises the parallel operation optical module, and described parallel operation optical module is used for being connected by parallel operation optical module or the optical module of optical fiber with other rectification control submodule.
In the technical scheme that the utility model embodiment provides, rectification module is comprised of the rectification unit of a rectification unit or two more parallel connections, rectification unit is comprised of filter unit and power cell, because filter unit setting corresponding to power cell, and filter unit directly is connected with AC signal, when the power demand of system changes, just can change the power of high-power four-quadrant frequency converter by simple adding rectification unit or minimizing rectification unit, need not reactor again development and Design, high-power four-quadrant frequency converter is used more flexible, replace high-power input reactance device with the little filter unit of a plurality of volumes, the frequency converter volume is reduced, and utilize optical fiber to connect, make the connection of system simpler, loss reduces greatly, and the performance of the anti-electromagnetic interference of enhancing system, make the transmission speed of control signal faster, reduce time-delay, also alleviated the weight of frequency converter simultaneously.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the system configuration schematic diagram of a kind of high-power four-quadrant frequency converter in the prior art;
Fig. 2 is the structural representation of a kind of high-power four-quadrant frequency converter among the utility model embodiment;
Fig. 3 is the structural representation of filter unit among the utility model embodiment;
Fig. 4 is the part-structure schematic diagram of rectification module and corresponding rectification control submodule among the utility model embodiment;
Fig. 5 is the part-structure schematic diagram of controlling submodule and power cell among the utility model embodiment;
Fig. 6 is a kind of power-converting device the second example structure schematic diagram among the utility model embodiment;
Fig. 7 is a kind of power-converting device the 3rd example structure schematic diagram among the utility model embodiment;
Fig. 8 is a kind of power-converting device the 4th example structure schematic diagram among the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides a kind of high-power four-quadrant frequency converter and power-converting device.The below is elaborated respectively.See also Fig. 2, be the structural representation of a kind of high-power four-quadrant frequency converter among the utility model embodiment, and a kind of power-converting device the first embodiment among the utility model embodiment comprises high-power four-quadrant frequency converter structure shown in Figure 2.
The structure of high-power four-quadrant frequency converter the first embodiment among the utility model embodiment as shown in Figure 2 comprises rectification module 11, inversion module 12 and control module 16.
Further, control module 16 comprises rectification control submodule 13 and inversion control submodule 14.
Wherein, rectification control submodule 13 is connected with rectification module 11, be used for control rectification module 11, comprise one or more optical modules 161, the optical module 161 of rectification control submodule 13 is by each power cell 1102 of connection rectification module 11 corresponding to optical fiber, be each power cell 1102 equal corresponding optical module 161 that connect a rectification control submodule 13 of rectification module 11, concrete, rectification control submodule 13 comprises a plurality of optical modules 161, each optical module 161 of rectification control submodule 13 is connected with each power cell 1102 of rectification module 11 by optical fiber is corresponding, rectification control submodule 13 is controlled the power cell 1102 of each rectification module 11 respectively, comprise that power ratio control unit 1102 starts working the size of power cut-off and power output etc.
Further, rectification module 11 comprises the rectification unit 110 more than three, and in the present embodiment, rectification module 11 comprises four rectification units 110.
In the technical scheme that the present embodiment provides, rectification module 11 is comprised of one or more rectification unit that is connected in parallel 110, rectification unit 110 is comprised of filter unit 1101 and power cell 1102, because filter unit 1101 and power cell 1102 corresponding settings, and filter unit 1101 directly is connected with AC signal, when the power demand of system changes, just can change the power of high-power four-quadrant frequency converter by simple adding rectification unit 110 or minimizing rectification unit 110, need not reactor again development and Design, high-power four-quadrant frequency converter is used more flexible, reduced the construction cycle simultaneously, reduced development cost.Each rectification module 11 of control that rectification control submodule 13 and inversion control submodule 14 difference are corresponding and the power cell 1102 of inversion module 12, so that when having power cell to break down, other power cells can normally move, make system more stable, the filter unit 1101 little with a plurality of volumes replaces high-power input reactance device, and the frequency converter volume is reduced.Simultaneously, by the inside at rectification control submodule 13 and inversion control submodule 14 one or more optical module 161 is set, by optical fiber rectification module 11 and control module 16 are coupled together, control module 16 can send to control command rectification module 11 and inversion module 12 fast like this, utilize optical fiber to connect, make the connection of whole system simpler, loss reduces greatly, and the performance of the anti-electromagnetic interference of enhancing system, make the transmission speed of control signal faster, reduce time-delay, also alleviated the weight of high-power four-quadrant frequency converter simultaneously.
See also Fig. 3, be the structural representation of filter unit 1101 among the utility model embodiment.Filter unit 1101 comprises a plurality of network reactors 20, a plurality of rectification reactor 23, a plurality of electric capacity 21 and a plurality of damping resistance 22 as shown in Figure 3.
Wherein, a plurality of network reactors 20 link to each other respectively to receive AC signal with electrical network, and in the present embodiment, the AC signal of net side is output as three interfaces, and further, network reactor 20 is three, is connected with three interfaces of net side respectively.
The input of a plurality of rectification reactors 23 is connected with the output of a plurality of network reactors 20 respectively, and the output of a plurality of rectification reactors 23 and filter unit 1101 corresponding power cells 1102 connect, further, rectification reactor 23 is three, be connected respectively a network reactor 20, between the input of the output of network reactor 20 and rectification reactor 23, all has the node that is connected for damping resistance 22, in the present embodiment, have three nodes between the input of the output of three network reactors 20 and three rectification reactors 23.
A plurality of electric capacity 21 connect by angle scheme mode or star-star connection mode.In the present embodiment, electric capacity 21 is three, then connects by the delta connection mode, and has the end points that is connected for damping resistance 22 between every adjacent two electric capacity 21, further, if electric capacity 21 is four, then connects by the tetragonal mode of connection.In other embodiments, electric capacity 21 also can connect by the star-star connection mode, and namely an end of all electric capacity 21 is connected on the same point, and the other end is used for being connected with damping resistance 22.
One end of a plurality of damping resistances 22 connects respectively the node between the input of the output of a plurality of network reactors 20 and a plurality of rectification reactors 23, and the other end of a plurality of damping resistances connects with a plurality of electric capacity 21 that are connected by angle scheme mode or star-star connection mode respectively.In the present embodiment, electric capacity 21 connects by the delta connection mode, damping resistance 22 has three, one end of three damping resistances 22 be connected to and the input of the output of network reactor 20 and rectification reactor between three nodes on, the other end of three damping resistances 22 respectively with adjacent two electric capacity 21 between end points be connected.In other embodiments, if three electric capacity 21 connect by the star-star connection mode, one end of three damping resistances 22 be connected to and the input of the output of network reactor 20 and rectification reactor between three nodes on, and an end of all electric capacity 21 is connected on the same point, and the other end of all electric capacity 21 is connected with the other end of three damping resistances 22 respectively.
In the present embodiment, damping resistance 22 can effectively absorb the harmonic wave part of AC signal, the amplitude of AC signal can well be suppressed, effectively reduced the resonance of AC signal, thereby the percent harmonic distortion of electric current is significantly reduced, reduce the harmonic pollution to electrical network in when work, made system more stable, improved the quality of electric energy.
See also Fig. 4, control the part-structure schematic diagram of submodule 13 for the rectification of rectification module 11 among the utility model embodiment and correspondence, rectification module 11 comprises the rectification unit 110 of 4 parallel connections in Fig. 2, and in this Fig. 4, because principle is that the identical rectification unit 110 that then only draws 3 parallel connections wherein is to show explanation.
See also Fig. 5, be the part-structure schematic diagram of control submodule and power cell 1102 among the utility model embodiment.As shown in Figure 5, the control submodule mainly is rectification control submodule 13 and inversion control submodule 14.
The rectification control submodule 13 of control module 16 is connected with rectification module 11, and further, rectification control submodule 13 comprises a plurality of optical modules 161, parallel operation optical module 132, rectification FPGA circuit 133 and rectification DSP circuit 134.The power optical module piece 501 of optical module 161 and the power cell 1101 of rectification module 11 is connected by optical fiber, is used for communicating with power optical module piece 501.Parallel operation optical module 132 is used for being connected with other rectification control submodules 13 by optical fiber, make system under the long scene of transmission range, control simultaneously a plurality of rectification modules 11 by two rectification control submodules 13 that link together, under concrete scene, if there are two rectification control submodules 13 in system, the parallel operation optical module 132 of the parallel operation optical module 132 of one of them rectification control submodule 13 and another rectification control submodule 13 or optical module 161 are connected by optical fiber, and control with another rectification by parallel operation optical module 132 and to control the power cell 1102 that submodule 13 is connected.
The inversion control submodule 14 of control module 16 is connected with inversion module 12, further, inversion control submodule 14 comprises a plurality of optical modules 161, parallel operation optical module 132, inversion FPGA circuit 143 and inversion DSP circuit 144, the power optical module piece 501 of optical module 161 and the power cell 1101 of inversion module 12 is connected by optical fiber, is used for communicating with power optical module piece 501.Parallel operation optical module 132 is used for being connected with other inversion control submodules 14 by optical fiber, make system under the long scene of transmission range, control simultaneously a plurality of inversion modules 12 by two inversion control submodules 14 that link together, under concrete scene, if there are two inversion control submodules 14 in system, the parallel operation optical module 132 of one of them inversion control submodule 14 and the parallel operation optical module 132 of another inversion control submodule 14 or optical module 161 are connected by optical fiber, and control the power cell 1102 that submodule 13 is connected by 132 controls of parallel operation optical module with another rectification.
In the present embodiment, because power cell 1102 has independently optical module 161 that it is controlled, and adopt optical fiber to be connected with optical module 161, guaranteed the reliability of system, when a power cell 1102 breaks down, other power cells can normally move, and, because the gross power of high-power four-quadrant frequency converter size is only relevant with the number of power cell 1102, well promoted the reusability of device and parts, maintain easily, reduced maintenance cost.
See also Fig. 6, structural representation for power-converting device the second embodiment among the utility model embodiment, as shown in Figure 6, power-converting device comprises a plurality of rectification modules 11, a plurality of inversion module 12, a plurality of rectification control submodule 13, a plurality of inversion control submodule 14 and motor 15.
In the present embodiment, inversion module 12 of rectification module 11 corresponding connections, the ac output end of a plurality of inversion modules 12 is connected with acting in conjunction in same motor 15.A plurality of rectification control submodules 13 and a plurality of inversion control submodule 14 common formation control modules 16, the number of rectification control submodule 13 is identical with the number of rectification module 11 and all continuous by optical fiber, and the number of inversion control submodule 14 is identical and all continuous by optical fiber with the number of inversion module 12.
For instance, if power-converting device comprises two rectification modules 11 and two inversion modules 12, inversion module 12 of each rectification module 11 corresponding connection, the ac output end of two inversion modules 12 is connected with acting in conjunction and same motor 15, control module 16 comprises two rectification control submodules 13 and two inversion control submodules 14, each rectification control submodule 13 respectively corresponding rectification module 11, each inversion control submodule 14 respectively corresponding inversion module 12, rectification control submodule 13 and inversion control submodule 14 include parallel operation optical module 132 and a plurality of optical module 161, and wherein parallel operation optical module 132 is used for being connected by parallel operation optical module 132 or the optical module 161 of optical fiber with other rectification control submodule 13 or inversion control submodule 14.
In the present embodiment, the parallel operation optical module 132 that submodule 13 is controlled in the parallel operation optical module 132 of rectification control submodule 13 and another rectification is connected by optical fiber, the parallel operation optical module 132 of an inversion control submodule 14 and the parallel operation optical module of another inversion control submodule 14 132 are connected by optical fiber, make system under the long scene of transmission range, control simultaneously two rectification modules 11 by two rectification control submodules 13 that link together, and enlarged the capacity of high-power four-quadrant frequency converter by parallel operation.
The present embodiment is by the parallel connection of a plurality of rectification modules and inversion module, and thereby the optical fiber by parallel operation optical module 132 connects and realizes high-power demand and long Distance Transmission, connect the real-time that has guaranteed control module 16 with optical fiber, make simultaneously the connection of system simpler, loss reduces greatly, and the performance of the anti-electromagnetic interference of enhancing system makes the transmission speed of control signal faster, reduces time-delay.
See also Fig. 7, be the 3rd example structure schematic diagram of power-converting device among the utility model embodiment.As shown in Figure 7, power-converting device comprises a plurality of rectification modules 11, inversion module 12, a plurality of rectification control submodule 13, inversion control submodule 14 and motor 15.
In the present embodiment, the dc output end of a plurality of rectification modules 11 is connected by dc bus, and all is connected to same inversion module 12.Power-converting device in the present embodiment comprises that two rectification modules 11 and inversion module 12 describe as example, and the dc output end of two rectification modules 11 is connected by dc bus, and all is connected with the direct-flow input end of inversion module 12.Two rectification control submodules 13 and inversion control submodule 14 common formation control modules 16, wherein, two rectification control submodule 13 respectively corresponding two rectification modules 11, rectification control submodule 13 comprises a plurality of optical modules 161 and parallel operation optical module 132, and parallel operation optical module 132 is used for being connected by parallel operation optical module 132 or the optical module 161 of optical fiber with other rectification control submodule 13.In the present embodiment, the parallel operation optical module 132 that submodules 13 are controlled in the parallel operation optical module 132 of rectification control submodule 13 and other rectifications is connected by optical fiber, make system under the long scene of transmission range, control simultaneously two rectification modules 11 by two rectification control submodules 13 that link together, and enlarged the capacity of high-power four-quadrant frequency converter by parallel operation.
The present embodiment is the replacement scheme of high-power demand and long Distance Transmission, connect the real-time that has guaranteed control module 16 with optical fiber, make simultaneously the connection of system simpler, loss reduces greatly, and the performance of the anti-electromagnetic interference of enhancing system, make the transmission speed of control signal faster, reduce time-delay.
See also Fig. 8, be the structural representation of power-converting device the 4th embodiment among the utility model embodiment.As shown in Figure 8, power-converting device comprises a plurality of rectification modules 11, a plurality of inversion module 12, a plurality of rectification control submodule 13, a plurality of inversion control submodule 14 and motor 15.
In the present embodiment, inversion module 12 of rectification module 11 corresponding connections, the ac output end of a plurality of inversion modules 12 is connected with acting in conjunction in same motor 15.A plurality of rectification control submodules 13 and a plurality of inversion control submodule 14 common formation control modules 16.The number of rectification control submodule 13 is identical with the number of rectification module 11 and all continuous by optical fiber, and the number of inversion control submodule 14 is identical and all continuous by optical fiber with the number of inversion module 12.
For instance, if power-converting device comprises two rectification modules 11 and two inversion modules 12, inversion module 12 of each rectification module 11 corresponding connection, the ac output end of two inversion modules 12 is connected with acting in conjunction and same motor 15, control module 16 comprises two rectification control submodules 13 and two inversion control submodules 14, each rectification control submodule 13 respectively corresponding rectification module 11, each inversion control submodule 14 respectively corresponding inversion module 12, rectification control submodule 13 and inversion control submodule 14 include parallel operation optical module 132 and a plurality of optical module 161, and wherein parallel operation optical module 132 is used for being connected by parallel operation optical module 132 or the optical module 161 of optical fiber with other rectification control submodule 13 or inversion control submodule 14.
In the present embodiment, the optical module 161 that submodule 13 is controlled in the parallel operation optical module 132 of rectification control submodule 13 and another rectification is connected by optical fiber, the parallel operation optical module 132 of an inversion control submodule 14 and the parallel operation optical module of another inversion control submodule 14 132 are connected by optical fiber, make system under the long scene of transmission range, control simultaneously two rectification modules 11 by two rectification control submodules 13 that link together, and enlarged the capacity of high-power four-quadrant frequency converter by parallel operation.
The present embodiment is by the parallel connection of a plurality of rectification modules and inversion module, and thereby the optical fiber by parallel operation optical module 132 connects and realizes high-power demand and long Distance Transmission, connect the real-time that has guaranteed control module 16 with optical fiber, make simultaneously the connection of system simpler, loss reduces greatly, and the performance of the anti-electromagnetic interference of enhancing system makes the transmission speed of control signal faster, reduces time-delay.
Above a kind of high-power four-quadrant frequency converter and the power-converting device that the utility model embodiment is provided is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (10)
1. a high-power four-quadrant frequency converter is characterized in that, comprising:
Rectification module, comprise the rectification unit that one or more is connected in parallel, be used for and convert direct current signal to from the AC signal of electrical network input, wherein, described rectification unit comprises interconnective filter unit and power cell, described filter unit is used for carrying out filtering from the AC signal of electrical network input, and described power cell is used for and will converts direct current signal to through the AC signal after the described filtering unit filters;
Inversion module links to each other with described rectification module by dc bus, comprises the power cell that one or more is connected in parallel, and is used for converting the direct current signal of described rectification module output to frequency adjustable AC signal;
Control module, with described rectification module be connected inversion module and be connected, comprise a plurality of optical modules, described optical module is connected with the power cell of being connected in the inversion module by optical fiber and described rectification module, to control the work of described rectification module and described inversion module, wherein, described rectification module be connected that each power cell in the inversion module is all corresponding to connect an optical module.
2. high-power four-quadrant frequency converter according to claim 1, it is characterized in that, the power cell of described rectification module is identical with the power cell of described inversion module, and described power cell includes dc terminal and exchanges end, described filter unit comprises input and output, wherein, the input of described filter unit links to each other to receive AC signal with described electrical network, the output of described filter unit links to each other with the interchange end of corresponding power cell, and the dc terminal of the power cell of described correspondence links to each other with described dc bus.
3. high-power four-quadrant frequency converter according to claim 1, it is characterized in that, described inversion module comprises direct-flow input end and ac output end, wherein, the direct-flow input end of described inversion module is connected with described dc bus, and the ac output end of described inversion module is used for the adjustable AC signal of the described frequency of output after conversion with drive motors.
4. high-power four-quadrant frequency converter according to claim 1, it is characterized in that, described filter unit comprises a plurality of network reactors and a plurality of rectification reactor, wherein, described a plurality of network reactor links to each other respectively to receive AC signal with described electrical network, the input of described a plurality of rectification reactors is connected with the output of described a plurality of network reactors respectively, and the output of the described a plurality of rectification reactors power cell corresponding with described filter unit connects.
5. high-power four-quadrant frequency converter according to claim 4, it is characterized in that, described filter unit also comprises a plurality of electric capacity and a plurality of damping resistance, wherein, described a plurality of electric capacity connects by angle scheme mode or star-star connection mode, one end of described a plurality of damping resistances connects respectively the node between the input of the output of described a plurality of network reactors and described a plurality of rectification reactors, and the other end of described a plurality of damping resistances connects with the described a plurality of electric capacity that are connected by angle scheme mode or star-star connection mode respectively.
6. high-power four-quadrant frequency converter according to claim 1 is characterized in that, described control module comprises:
Rectification control submodule is connected with described rectification module, is used for controlling described rectification module, comprises a plurality of optical modules, and the optical module of described rectification control submodule is by corresponding each power cell that connects rectification module of optical fiber; And
The inversion control submodule is connected with described inversion module, is used for controlling described inversion module, comprises a plurality of optical modules, and the optical module of described inversion control submodule is by corresponding each power cell that connects inversion module of optical fiber.
7. a power-converting device is characterized in that, comprises the described high-power four-quadrant frequency converter of one of claim 1 to 6 and motor.
8. power-converting device according to claim 7, it is characterized in that, described power-converting device comprises a plurality of rectification modules and one or more inversion module, and the ac output end of described one or more inversion module is connected with acting in conjunction in described motor.
9. power-converting device according to claim 8, it is characterized in that, described control module comprises a plurality of rectification control submodules and one or more inversion control submodule, the number of described rectification control submodule is identical with the number of described rectification module and all continuous by optical fiber, and the number of described inversion control submodule is identical with the number of described inversion module and all continuous by optical fiber.
10. power-converting device according to claim 9 is characterized in that, described rectification control submodule also comprises the parallel operation optical module, and described parallel operation optical module is used for being connected by parallel operation optical module or the optical module of optical fiber with other rectification control submodule.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710145A (en) * | 2012-06-19 | 2012-10-03 | 深圳市英威腾电气股份有限公司 | Large-power four-quadrant converter and electric power transformation device |
| CN105406730A (en) * | 2015-11-10 | 2016-03-16 | 深圳市英威腾电气股份有限公司 | Four-quadrant IGBT packaging module and topology device |
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2012
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710145A (en) * | 2012-06-19 | 2012-10-03 | 深圳市英威腾电气股份有限公司 | Large-power four-quadrant converter and electric power transformation device |
| CN102710145B (en) * | 2012-06-19 | 2016-02-03 | 深圳市英威腾电气股份有限公司 | A kind of high-power four-quadrant frequency converter and power-converting device |
| CN105406730A (en) * | 2015-11-10 | 2016-03-16 | 深圳市英威腾电气股份有限公司 | Four-quadrant IGBT packaging module and topology device |
| CN105406730B (en) * | 2015-11-10 | 2018-09-14 | 深圳市英威腾电气股份有限公司 | A kind of four-quadrant IGBT package modules and topology apparatus |
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