CN203645595U - Cascade multiphase electric power driver - Google Patents
Cascade multiphase electric power driver Download PDFInfo
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- CN203645595U CN203645595U CN201320778248.1U CN201320778248U CN203645595U CN 203645595 U CN203645595 U CN 203645595U CN 201320778248 U CN201320778248 U CN 201320778248U CN 203645595 U CN203645595 U CN 203645595U
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- 238000004804 winding Methods 0.000 claims abstract description 33
- 239000013307 optical fiber Substances 0.000 claims description 9
- 230000002457 bidirectional effect Effects 0.000 claims description 3
- 230000010363 phase shift Effects 0.000 description 7
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Abstract
The utility model discloses a cascade multiphase electric power driver. The cascade multiphase electric power driver comprises a multiphase electric power transformer comprising at least one primary winding and a first number of secondary windings, wherein the primary winding can be connected with the source of a multiphase AC power supply electrically; a first number of power units, wherein each first number of power unit possesses an input end connected with the corresponding secondary winding in the first number of secondary windings, and the first number of power units can be in series connection with a plurality of power units in each phase output line of a multiphase AC load; a main controller; a first number of power unit controllers, wherein each first number of power unit controller is connected with the corresponding power unit in the first number of power units; and a control concentrator in digital connection with the main controller and each of the first number of power unit controllers. The cascade multiphase electric power driver of the utility model enables the connection complexity with the main controller to be reduced, and the reliability to be improved.
Description
Technical field
The utility model relates to polyphase electric power driver, particularly a kind of cascade polyphase electric power driver.
Background technology
Cascade connection type polyphase electric power driver provides variable electric power industrial being used for to alternating current motor.These identical drivers can be used in be not specifically related to motor but need variable output voltage or frequency other application in.Typical driver has the conversion equipment of alternating current input power supplying and some types, and conversion equipment often uses solid state device, for fixing AC-input voltage being converted to the output of variable voltage and/or variable frequency.
In existing cascade multiphase driver, master controller is connected and is directly connected to power cell controller by optical fiber.Master controller is by the signal of Optical Fiber Transmission operand power cell controller.Master controller self is carried out a large amount of control operations, and operation signal is to power cell controller and from power cell controller receiving control information.
But there is following defect in prior art:
One of them problem is the wiring complexity that optical fiber connects.In the time that cascade multiphase driver passes through to increase power cell with raising Voltage-output, owing to being connected by optical fiber between each power cell and master controller, be connected to the wiring wiring complexity of many optical fiber connections of master controller, can reduce the reliability of driver.In addition, because master controller and power cell controller are separately positioned on different cabinets, therefore the optical fiber between master controller and power cell controller connects and is exposed in outside disagreeableness environment, easily causes breaking down or reducing useful life.
The another one problem of prior art is the live load of master controller.Particularly master controller is responsible for controlling driver, for example provide output voltage benchmark, monitoring auxiliary equipment state, for each power cell provides carrier reference, access individually each power cell controller.Therefore the disposal ability of master controller is relatively high, thereby causes higher cost.
Utility model content
Based on this, the purpose of this utility model is to reduce many wiring complexities that numeral connects that are connected to master controller, thereby improves the reliability of cascade polyphase electric power driver.
According to an aspect of the present utility model, a kind of cascade polyphase electric power driver, is characterized in that, comprising:
Polyphase electric power transformer, described polyphase electric power transformer comprises the secondary winding of at least one winding and the first quantity, a described winding can electric power be connected to the source of multi-phase AC power;
The power cell of the first quantity, the power cell of each described the first quantity has and a corresponding input that secondary winding is connected in the secondary winding of described the first quantity, and multiple power unit cascades that can be connected in the power cell of described the first quantity in every phase outlet line of polyphase ac load connect;
Master controller; And
The power cell controller of the first quantity, each in the power cell controller of described the first quantity is connected with a corresponding power cell in the power cell of described the first quantity;
Control hub, each in the power cell controller of the described control hub numeral described master controller of connection and each described the first quantity.
Owing to having adopted control hub in cascade polyphase electric power driver, therefore reduce being connected between master controller and power cell controller, thereby reduced to the complexity of the connection of master controller, improve reliability.
Another object of the present utility model is in cascade polyphase electric power driver, to use the master controller of controlling hub and having reduction process ability processor.
According to another aspect of the present utility model, described control hub adopts field programmable gate array chip to realize.
Adopt field programmable gate array chip to realize owing to controlling hub, therefore described master controller is further sent to driving instruction described control hub; The described control hub further driving instruction based on receiving from described master controller produces the concrete instruction of power cell to each power cell controller of described the first quantity and concrete each power cell instruction is sent to the power cell controller of described the first quantity to corresponding one.Therefore, control hub and can carry out the computing function that some need to be carried out by master controller in existing driver, thereby alleviate the live load of master controller.
Preferably, according to another aspect of the present utility model, described numeral is connected to bidirectional linked list.Described control hub is optical fiber connecting hub.Therefore, status signal and power cell signal can be forwarded to master controller by controlling hub, and between master controller, power cell controller and power cell, issuable electromagnetic interference can be reduced simultaneously.
Preferably, according to another aspect of the present utility model, each in each power cell controller of described the first quantity is arranged in the power cell of described the first quantity on a corresponding power cell.Described control hub adopts field programmable gate array chip to realize; Described control hub is also connected with auxiliary equipment.Described control hub is for monitoring the state of described auxiliary equipment.Thereby further alleviate the live load of existing driver.
Preferably, according to another aspect of the present utility model, cascade polyphase electric power driver also comprises:
Hold the first cabinet of described master controller;
Hold the second cabinet of the power cell controller of described control hub and described the first quantity, and the second cabinet and described the first cabinet divide and are arranged;
Numeral between described master controller and described control hub is connected and is set to connect the first cabinet and the second cabinet.Therefore, be connected be exposed on outside and compare with a large amount of numerals, the utility model has reduced the probability of the digital connection error causing due to the unfriendly environment in outside.
Accompanying drawing explanation
Fig. 1 shows the power circuit figure of every cascade connection type multiphase driver mutually with three power cells; With
Fig. 2 shows according to the embodiment of the control system of the utility model embodiment.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in more detail.
Fig. 1 shows the power circuit figure of every cascade connection type multiphase driver mutually with three power cells.As shown in Figure 1, three-phase ac power is imported into a winding 100 of the power transformer 10 of cascade connection type multiphase driver 1.Can be that the winding 100 that Y-connection or net form connect makes 101 to 109 energisings of three-phase secondary winding.The three-phase power relevant to each secondary winding in secondary winding 101 to 109 is provided for respectively power cell 110 to 118.In the present embodiment, preferably, the secondary winding 101 to 109 that provides net form to connect, to reduce the K factor of power transformer and to improve harmonic wave control.The winding that net form connects can comprise the Δ structure of (for example) Δ structure or expansion.In some cases, can operate this net form winding, so that some secondary winding shift to an earlier date the electric phase of preselected angle, make the electric phase of other secondary winding delay preselected angle, and (possibility) not be moved the phase place of other secondary winding substantially.In the present embodiment shown in Fig. 1, the phase place of having described 1/3rd secondary winding is by 20(degree in advance), the phase place of 1/3rd secondary winding is delayed 20(degree).One the secondary winding that its excess-three is divided is not moved.In the embodiment in figure 1, the winding of phase shift uses the winding of the Δ structure of expansion, does not have the winding of phase shift to use the winding of Δ structure.For other voltage, required phase shift separately can by according to the quantity of every phase power cell to 60(degree) divide acquisition.For example, if 5 power cells of every phase, phase shift is+24(degree) ,+12(degree), 0(degree) ,-12(degree) and-24(degree); If 6 power cells of every phase, phase shift is+25(degree) ,+15(degree) ,+5(degree) ,-5(degree) ,-15(degree) and-25(degree); If 8 power cells of every phase, phase shift is+26.25(degree) ,+18.75(degree) ,+11.25(degree) ,+3.75(degree) ,-3.75(degree) ,-11.25(degree) ,-18.75(degree) and-26.25(degree); If 9 power cells of every phase, phase shift is-26.67(degree) ,-20(degree) ,-13.33(degree) ,-6.67(degree), 0(degree) ,+6.67(degree) ,+13.33(degree) ,+20(degree) ,+26.67(degree).Preferably, multiple power cells are connected to each phase place outlet line 120,121,122, phase place outlet line 120,121,122 can represent respectively phase A, phase B and phase C.Multiple power cells can be connected in series on each phase place outlet line, thereby can generate the middle pressure input phase line controller with multiple low pressure and low powers unit.Be connected in series and can also make every multiple voltage statuss that have mutually; These multiple voltage statuss of every phase can be used to obtain improved current waveform.Each power cell can form low-voltage standards in inside, and for example, although be comprised in middle pressure device, each power cell also can have the rated value of 1000 volts.
Fig. 2 shows according to the embodiment of the control system of the utility model embodiment.As shown in Figure 2, control system 2 comprises master controller 20, multiple power cell controllers 210 to 218, and control hub 20.In each and power cell 110 to 118 in power cell controller 210 to 218, corresponding power cell is connected, for the concrete instruction to power cell is provided to it.Control hub 22 numerals and connect each in master controller 20 and power cell controller 210 to 218.Control hub 22 and be provided with multiple I/O ports, signal will appear at all of the port except former input port from any one port input.Master controller 20 can arrange one and drive instruction, for example output voltage benchmark, and send to the I/O port 229 of controlling hub 22, controlling hub 22 will according to the driving instruction of obtaining from master controller 20 be 210 to the 218 concrete instructions in generating power unit respectively of power cell controller.As an example, the concrete instruction of power cell can comprise that carrier phase benchmark, direct current connect average voltage, carrier synchronization benchmark etc.210 to the 218 meeting concrete instructions in reference power unit of power cell controller adopt the break-make of PWM mode power ratio control unit 110 to 118 in this locality.Control the hub 22 difference concrete instructions in transmitted power unit to the power cell controller 210 to 218 of specifying.As an example, there will be at I/O port 220 to 228 for the concrete instruction of the power cell S0 to S8 of power cell controller 210 to 218 respectively.Owing to having adopted control hub in cascade polyphase electric power driver, therefore reduce the connection between master controller and power cell controller, thereby reduced the complexity that is connected to master controller, improve reliability.
In an embodiment, control hub and adopt field programmable gate array (FPGA) chip to realize therein.Controlling hub can realize according to the function of the concrete instruction in driving instruction generating power unit of obtaining from master controller by programming.Therefore, control hub and can carry out the computing function that some need to be carried out by master controller in existing driver, thereby alleviate the live load of master controller.Further, in an embodiment, control hub and be also connected with the auxiliary equipment 24 of for example fan or door therein, monitor the state of described auxiliary equipment.This will further alleviate the live load of existing driver.
In an embodiment, numeral is connected to bidirectional linked list numeral and connects therein.Therefore, status signal and power cell signal can be forwarded to master controller by controlling hub.
As shown in Figure 2, in an embodiment, cascade connection type multiphase driver has further comprised the first cabinet 230 and the second cabinet 231 therein.The first cabinet 230 can hold master controller 20, the second cabinets 231 can hold power cell controller 210 to 218, and controls hub 20.Even, in the time that power cell controller 210 to 218 is separately positioned on power cell 110 to 118, the second cabinet 231 can also hold power cell 110 to 118 simultaneously.The first cabinet 230 and the second cabinet 231 next-door neighbours arrange or divide and are arranged.As described in Figure 2, the first cabinet 230 and the second cabinet 231 are close to setting, and master controller and the numeral controlling between hub are connected the 25 sidewall through holes that are set to through the first cabinet 230 and the second cabinet 231.As a replacement scheme, cascade connection type multiphase driver comprises the 3rd cabinet, and as an example, the 3rd cabinet can hold filter and/or transformer.The 3rd cabinet is arranged between the first cabinet 230 and the second cabinet 231.The circuit of numeral connection 25 is set up and passes through successively the sidewall of the first cabinet 230, the sidewall through hole of the 3rd cabinet two side through hole and the second cabinet 231.Those of ordinary skills should be understood that in wall box fixed line, so that link tester is crossed the method for through hole.Except the numeral between master controller 20 and control hub 22 is connected, all the other numeral connections that connect master controller 20, power cell controller 210 to 218, control hub 22 as long as relating to all can be contained in the first cabinet 230 or the second cabinet 231.Therefore, be exposed on outside with a large amount of digital links road compared with, the utility model has reduced the probability of the digital connection error causing due to the unfriendly environment in outside.
In an embodiment, controlling hub is optical fiber connecting hub therein.Thereby reduce issuable electromagnetic interference between master controller, power cell controller and power cell.
Although the utility model is described according to some preferred embodiments,, those skilled in the art are to be understood that these embodiment absolutely not should limit scope of the present utility model.In the situation that not deviating from the utility model spirit and theory, any change that embodiment is made and modification all should be within the scope of personnel's the understandings with general knowledge and technology, thereby fall in the scope of the present utility model being limited by claims.
Claims (7)
1. a cascade polyphase electric power driver, is characterized in that, comprising:
Polyphase electric power transformer, described polyphase electric power transformer comprises the secondary winding of at least one winding and the first quantity, a described winding can electric power be connected to the source of multi-phase AC power;
The power cell of the first quantity, the power cell of each described the first quantity has and a corresponding input that secondary winding is connected in the secondary winding of described the first quantity, and multiple power unit cascades that can be connected in the power cell of described the first quantity in every phase outlet line of polyphase ac load connect;
Master controller; And
The power cell controller of the first quantity, each in the power cell controller of described the first quantity is connected with a corresponding power cell in the power cell of described the first quantity;
Control hub, each in the power cell controller of the described control hub numeral described master controller of connection and described the first quantity.
2. cascade polyphase electric power driver according to claim 1, is characterized in that, described numeral is connected to bidirectional linked list.
3. cascade polyphase electric power driver according to claim 1, is characterized in that, described control hub is optical fiber connecting hub.
4. cascade polyphase electric power driver according to claim 1, is characterized in that, each in the power cell controller of described the first quantity is arranged in the power cell of described the first quantity on a corresponding power cell.
5. according to the cascade polyphase electric power driver described in claim 1～4 any one, it is characterized in that:
Described control hub adopts field programmable gate array chip to realize;
Described master controller is further sent to driving instruction described control hub;
The described control hub further driving instruction based on receiving from described master controller produces the concrete instruction of power cell to each power cell controller of described the first quantity and concrete each power cell instruction is sent to the power cell controller of described the first quantity to corresponding one.
6. according to the cascade polyphase electric power driver one of claim 1 to 4 Suo Shu, it is characterized in that, described control hub adopts field programmable gate array chip to realize; And described control hub is also connected with auxiliary equipment.
7. according to the cascade polyphase electric power driver described in claim 1～3 any one, it is characterized in that, also comprise:
Hold the first cabinet of described master controller;
Hold the second cabinet of the power cell controller of described control hub and described the first quantity, and the second cabinet and described the first cabinet divide and are arranged;
Numeral between described master controller and described control hub is connected and is set to connect the first cabinet and the second cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778248.1U CN203645595U (en) | 2013-12-02 | 2013-12-02 | Cascade multiphase electric power driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320778248.1U CN203645595U (en) | 2013-12-02 | 2013-12-02 | Cascade multiphase electric power driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203645595U true CN203645595U (en) | 2014-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320778248.1U Expired - Lifetime CN203645595U (en) | 2013-12-02 | 2013-12-02 | Cascade multiphase electric power driver |
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| Country | Link |
|---|---|
| CN (1) | CN203645595U (en) |
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2013
- 2013-12-02 CN CN201320778248.1U patent/CN203645595U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180523 Address after: Baden, Switzerland Patentee after: ABB Switzerland Co.,Ltd. Address before: Zurich Patentee before: ABB TECHNOLOGY Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140611 |