CN206977341U - A kind of double winding heavy-duty motor RHVC based on IEGT - Google Patents
A kind of double winding heavy-duty motor RHVC based on IEGT Download PDFInfo
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- CN206977341U CN206977341U CN201720469301.8U CN201720469301U CN206977341U CN 206977341 U CN206977341 U CN 206977341U CN 201720469301 U CN201720469301 U CN 201720469301U CN 206977341 U CN206977341 U CN 206977341U
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Abstract
The utility model provides a kind of double winding heavy-duty motor RHVC based on IEGT; including High-voltage Incoming Cabinet, Multiple coil phase-shifting transformer, excitation surge current cabinet, comprehensive protection device, the power cabinet based on IEGT units, cabinet, excitation cubicle, Water-cooled cabinet and switch board are fed out, winding primary Ioops, winding secondary circuit and energized circuit are respectively constituted by said apparatus；The described power cabinet based on IEGT units includes rectification unit, the brake unit based on IEGT and the inversion unit based on IEGT, and the element used in the unit is the IEGT element based on 4.5kV/2100A；Described excitation surge current cabinet input connection low-voltage network, output end connects the respective rectification unit of power cabinet and #2 power cabinets based on IEGT unit of the #1 based on IEGT units respectively, enters line precharge to the DC bus capacitor of two sets of phase-shifting transformers and all power cells.Applied to power 40MW and the above, the double winding speed regualtion of AC motor of voltage 10kV ratings above, system operation is reliable, practical, good economy performance.
Description
Technical field
Middle pressure high-power frequency conversion AC speed regulator technical field is the utility model is related to, it is more particularly to a kind of to be based on IEGT
Double winding heavy-duty motor RHVC.
Background technology
Medium Voltage VF Technology realizes high-power transmission by improving the voltage class of buncher, realizes powerful another
One approach is polyphase machine transmission system.Compared with conventional three-phase electric system, polyphase machine is in high-power and high-reliability field
Conjunction has prominent advantage, it is more suitable for the fields such as ship's electrical propulsion, track traffic, Aero-Space, wind tunnel test field.
Driving double-winding motor traditional scheme usually requires to configure two sets of RHVCs, i.e. frequency conversion system shares two sets
Control system and two sets of transformer excitation flow restraining devices, the repeatability that hardware on the one hand can be caused to put into；On the other hand, two
Set control system is typically configured to master-slave control mode, needs to carry out data exchange between master ＆ slave control system, to a certain degree
On can exist transmission delay and Transmission risk.
The content of the invention
For overcome the deficiencies in the prior art, the utility model provides a kind of double winding heavy-duty motor based on IEGT and become
Frequency modulation speed variator, applied to power 40MW and the above, the double winding speed regualtion of AC motor of voltage 10kV ratings above, system operation
Reliably, it is practical, good economy performance.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of double winding heavy-duty motor RHVC based on IEGT, including High-voltage Incoming Cabinet, Multiple coil phase shift
Transformer, excitation surge current cabinet, comprehensive protection device, the power cabinet based on IEGT units, feed out cabinet, excitation cubicle, Water-cooled cabinet and control
Cabinet, winding primary Ioops, winding secondary circuit and energized circuit are respectively constituted by said apparatus.
Described winding primary Ioops include #1 High-voltage Incoming Cabinets, #1 phase-shifting transformers, #1 comprehensive protection devices, #1 and are based on IEGT
The power cabinet and #1 of unit feed out cabinet.
Described winding secondary circuit includes #2 High-voltage Incoming Cabinets, #2 phase-shifting transformers, #2 comprehensive protection devices, #2 and is based on IEGT
The power cabinet and #2 of unit feed out cabinet.
Described energized circuit includes #3 High-voltage Incoming Cabinets, transformer and excitation cubicle.
Described #1 High-voltage Incoming Cabinets, #2 High-voltage Incoming Cabinets and #3 High-voltage Incoming Cabinets input connects high-voltage fence 1 respectively
3 sections of section, 2 sections of high-voltage fence and high-voltage fence.
The described power cabinet based on IEGT units includes rectification unit, the brake unit based on IEGT and based on IEGT's
Inversion unit, the IEGT braked with the interior power device used of inversion unit for 4.5kV/2100A.
Described excitation surge current cabinet input connection low-voltage network, output end connect work(of the #1 based on IEGT units respectively
The respective rectification unit of the power cabinet of rate cabinet and #2 based on IEGT units simultaneously passes through described power cabinet and #1 and #2 phase shifts
Transformer is connected, and enters line precharge to the DC bus capacitor of #1 and #2 phase-shifting transformers and all power cells；
Described excitation surge current cabinet includes multiple charging contactors, pre-charge resistance and charging transformer, by charge contact
Device QA031 upper end connection low-voltage network, lower end is sequentially connected the one of charging contactor QA032, QA033 and charging transformer
Secondary survey, the QA034 and QA035 of the secondary side connection parallel connection of charging transformer.
Described charging contactor QA032 and QA033 difference charged in parallel resistance R0 and R1.
Described winding primary Ioops are sequentially connected #1 High-voltage Incoming Cabinets, #1 phase-shifting transformers, #1 synthesis for 1 section by high-voltage fence
Protector, #1 power cabinet and #1 based on IEGT units feed out cabinet, and feed out cabinet output end connection double-winding synchronous motor by #1
Winding one.
Described winding secondary circuit is sequentially connected #2 High-voltage Incoming Cabinets, #2 phase-shifting transformers, #2 synthesis for 2 sections by high-voltage fence
Protector, #2 power cabinet and #2 based on IEGT units feed out cabinet, and feed out cabinet output end connection double-winding synchronous motor by #2
Winding two.
Described energized circuit is sequentially connected #3 High-voltage Incoming Cabinets, transformer and excitation cubicle for 3 sections by high-voltage fence, and by encouraging
Magnetic cabinet output end connects the Exciting Windings for Transverse Differential Protection of double-winding synchronous motor.
Also include frequency-changing control system, the power cabinet based on IEGT units two sets Suo Shu is controlled respectively.
Compared with prior art, the beneficial effects of the utility model are：
1st, the utility model proposes a kind of double winding heavy-duty motor RHVC based on IEGT, described base
Include rectification unit, the brake unit based on IEGT and the inversion unit based on IEGT in the power cabinet of IEGT units, be to be based on
The device of IEGT power devices, 4.5kV/2100A voltage and electric current can be born, than using IGBT power device reliabilities
Height, the design of the IEGT inversion units based on 4.5kV/2100A, voltage-source type frequency converter has been expanded in 40MW and above power etc.
The application of level occasion, extend DC side dynamic braking mode and require answering for occasion with harsh braking time greatly in unit set inertia
With.
2nd, the utility model proposes a kind of double winding heavy-duty motor RHVC based on IEGT, described encourages
The magnetic cabinet that shoves can enter line precharge to #1 phase-shifting transformers and #2 phase-shifting transformers respectively, and to #1 based on IEGT units
The DC bus capacitor of the respective rectification unit of the power cabinet of power cabinet and #2 based on IEGT units enters line precharge.
Brief description of the drawings
Fig. 1 is the system construction drawing of the utility model device；
Fig. 2 is the excitation surge current cabinet fundamental diagram of the utility model device.
Embodiment
Embodiment provided by the utility model is described in detail below in conjunction with accompanying drawing.
As shown in figure 1, a kind of double winding heavy-duty motor RHVC based on IEGT, including High-voltage Incoming Cabinet,
Multiple coil phase-shifting transformer, excitation surge current cabinet, comprehensive protection device, the power cabinet based on IEGT units, feed out cabinet, excitation cubicle, water
Refrigerator and switch board, winding primary Ioops, winding secondary circuit and energized circuit are respectively constituted by said apparatus.
Described winding primary Ioops include #1 High-voltage Incoming Cabinets, #1 phase-shifting transformers, #1 comprehensive protection devices, #1 and are based on IEGT
The power cabinet and #1 of unit feed out cabinet.
Described winding secondary circuit includes #2 High-voltage Incoming Cabinets, #2 phase-shifting transformers, #2 comprehensive protection devices, #2 and is based on IEGT
The power cabinet and #2 of unit feed out cabinet.
Described energized circuit includes #3 High-voltage Incoming Cabinets, transformer and excitation cubicle.
Described #1 High-voltage Incoming Cabinets, #2 High-voltage Incoming Cabinets and #3 High-voltage Incoming Cabinets input connects high-voltage fence 1 respectively
3 sections of section, 2 sections of high-voltage fence and high-voltage fence.
The described power cabinet based on IEGT units includes rectification unit, the brake unit based on IEGT and based on IEGT's
Inversion unit, the IEGT braked with the interior power device used of inversion unit for 4.5kV/2100A.
Described excitation surge current cabinet input connection low-voltage network, output end connect work(of the #1 based on IEGT units respectively
The respective rectification unit of the power cabinet of rate cabinet and #2 based on IEGT units simultaneously passes through described power cabinet and #1 and #2 phase shifts
Transformer is connected, and enters line precharge to the DC bus capacitor of #1 and #2 phase-shifting transformers and all power cells；
As shown in Fig. 2 described excitation surge current cabinet includes multiple charging contactors, pre-charge resistance and charging transformer,
Low-voltage network is connected by charging contactor QA031 upper end, lower end is sequentially connected charging contactor QA032, QA033 and charging
The once survey of transformer, the QA034 and QA035 of the secondary side connection parallel connection of charging transformer.
Described charging contactor QA032 and QA033 difference charged in parallel resistance R0 and R1.
Described winding primary Ioops are sequentially connected #1 High-voltage Incoming Cabinets, #1 phase-shifting transformers, #1 synthesis for 1 section by high-voltage fence
Protector, #1 power cabinet and #1 based on IEGT units feed out cabinet, and feed out cabinet output end connection double-winding synchronous motor by #1
Winding one.
Described winding secondary circuit is sequentially connected #2 High-voltage Incoming Cabinets, #2 phase-shifting transformers, #2 synthesis for 2 sections by high-voltage fence
Protector, #2 power cabinet and #2 based on IEGT units feed out cabinet, and feed out cabinet output end connection double-winding synchronous motor by #2
Winding two.
Described energized circuit is sequentially connected #3 High-voltage Incoming Cabinets, transformer and excitation cubicle for 3 sections by high-voltage fence, and by encouraging
Magnetic cabinet output end connects the Exciting Windings for Transverse Differential Protection of double-winding synchronous motor.
Also include described RHVC control system, respectively to the power cabinet based on IEGT units two sets Suo Shu
It is controlled.
As shown in figure 1, in RHVC of the present utility model, open circuit is respectively configured in 1# and 2# High-voltage Incoming Cabinets
Device QF1 and QF2, grid side voltage sample PT, 3# high pressure carry out configuration circuit breaker Q F3 in cabinet.Two phase-shifting transformer original secondary
Winding is respectively arranged with current sample CT, and sampled signal is fed back into 1# and 2# transformer synthesis protection controller, for transformer
Differential protection and back-up protection function, two transformer synthesis protection controllers be positioned in integrated protection cabinet.Frequency converter work(
Rate cabinet, including the rectification unit based on Power Diode Pumped, the brake unit based on IEGT and the inversion unit based on IEGT.Braking
Cabinet is built with braking resistor.1# and 2# feeds out cabinet and voltage sensor, current sensor, isolation switch QS1 and QS2 is respectively configured.
Switch board is responsible for signal acquisition and calculation process, based on vector control algorithm point built with master controller and supplementary controlled system
It is other that pulsewidth modulation is carried out to two groups of loop of power circuit.It is used to feeding back rotor to master controller related letter to the encoder of motor coaxle
Breath.
As shown in Fig. 2 the RHVC shoves cabinet provided with set of excitation, in double winding operating condition, successively for
1# phase-shifting transformers and 1# loop of power circuit DC bus capacitor, 2# phase-shifting transformers and 2# loop of power circuit DC capacitor carry out preliminary filling
Electricity, the switching for being electrically charged loop are completed by two high voltage connector switchings；In simplex winding operating condition, wherein 1 is moved
Phase transformer and corresponding loop of power circuit DC bus capacitor enter line precharge.
The excitation surge current cabinet of the utility model device, input are terminated with three-phase 380V low-voltage distributions, work as system running pattern
For double winding operational mode when, first close charging contactor QA031 and QA034, by charging transformer successively through two preliminary fillings
The electric stage is respectively closed contactor QA032 and QA033, bypasses corresponding pre-charge resistance R0 and R1, completes to 1# phase shift transformations
The precharge of device and 1# loop of power circuit；Contactor QA034, QA032 and QA033 are disconnected afterwards, closes contactor QA035, are started
Line precharge is entered to 2# phase-shifting transformers and 2# loop of power circuit, is successively respectively closed contactor QA032 through two pre-charging stages
And QA033, corresponding pre-charge resistance R0 and R1 is bypassed, completes pre-charge process.When system running pattern runs for simplex winding
During pattern, the charge circuit between low-voltage distribution and charging transformer is the shared preliminary filling electrical circuit of two groups of loop of power circuit, is passed through
Selection closure contactor QA034 or QA035 (while closing one of contactor, remaining open another contactor), come
Selection individually enters line precharge to 1# transformers and 1# loop of power circuit, or 2# transformers and 2# loop of power circuit.Work as pre-charge resistance
For A values when, although charging current impact it is small, the charging interval is long, and the converter plant power cell DC voltage exists
Pre-charge voltage threshold value is unable to reach in design time；When pre-charge resistance is B values (B<When A), although precharge time is short,
DC voltage can reach pre-charge voltage threshold value in the scheduled time, but the rush of current of charge circuit is excessive, therefore this
In select the resistant series of two groups of B values to enter line precharge to transformer and loop of power circuit, two pre-charging stages are：First stage
Contactor QA032 and QA033 are disconnected when starting to charge up, two groups of pre-charge resistances R0 and R1 are put into, when reaching precharge time
Between T0 when, close contactor QA032, one of which pre-charge resistance R0 bypassed, DC voltage reaches pre-charge voltage threshold
After value, contactor QA033 is closed, bypasses another group of pre-charge resistance R1, completes two pre-charging stages.
Above example is implemented under premised on technical solutions of the utility model, gives detailed embodiment
With specific operating process, but the scope of protection of the utility model is not limited to the above embodiments.Side used in above-described embodiment
Method is conventional method unless otherwise instructed.
Claims (6)
1. a kind of double winding heavy-duty motor RHVC based on IEGT, including High-voltage Incoming Cabinet, Multiple coil phase shift become
Depressor, excitation surge current cabinet, comprehensive protection device, the power cabinet based on IEGT units, cabinet, excitation cubicle, Water-cooled cabinet and switch board are fed out,
Winding primary Ioops, winding secondary circuit and energized circuit are respectively constituted by said apparatus；
Described winding primary Ioops include #1 High-voltage Incoming Cabinets, #1 phase-shifting transformers, #1 comprehensive protection devices, #1 and are based on IEGT units
Power cabinet and #1 feed out cabinet；
Described winding secondary circuit includes #2 High-voltage Incoming Cabinets, #2 phase-shifting transformers, #2 comprehensive protection devices, #2 and is based on IEGT units
Power cabinet and #2 feed out cabinet；
Described energized circuit includes #3 High-voltage Incoming Cabinets, transformer and excitation cubicle；
Described #1 High-voltage Incoming Cabinets, #2 High-voltage Incoming Cabinets and #3 High-voltage Incoming Cabinets input connects 1 section of high-voltage fence, height respectively
3 sections of 2 sections of voltage electric grid and high-voltage fence；
Characterized in that, the power cabinet based on IEGT units includes rectification unit, brake unit and base based on IEGT
In IEGT inversion unit, the power device used in the brake unit of the IEGT and IEGT inversion unit is 4.5kV/
2100A IEGT；
Described excitation surge current cabinet input connection low-voltage network, output end connect power cabinets of the #1 based on IEGT units respectively
A rectification unit respective with power cabinets of the #2 based on IEGT units simultaneously passes through described power cabinet and #1 and #2 phase shift transformations
Device is connected, and enters line precharge to the DC bus capacitor of #1 and #2 phase-shifting transformers and all power cells；
Described excitation surge current cabinet includes multiple charging contactors, pre-charge resistance and charging transformer, by charging contactor
QA031 upper end connection low-voltage network, lower end is sequentially connected charging contactor QA032, QA033 and charging transformer once
Survey, the secondary side of charging transformer connects QA034 and QA035 respectively.
2. a kind of double winding heavy-duty motor RHVC based on IEGT according to claim 1, its feature exist
In described charging contactor QA032 and QA033 are parallel with charging resistor R0 and R1 respectively.
3. a kind of double winding heavy-duty motor RHVC based on IEGT according to claim 1, its feature exist
In described winding primary Ioops are sequentially connected #1 High-voltage Incoming Cabinets, #1 phase-shifting transformers, #1 integrated protections for 1 section by high-voltage fence
Device, #1 power cabinet and #1 based on IEGT units feed out cabinet, and by #1 feed out cabinet output end connection double-winding synchronous motor around
Group one.
4. a kind of double winding heavy-duty motor RHVC based on IEGT according to claim 1, its feature exist
In described winding secondary circuit is sequentially connected #2 High-voltage Incoming Cabinets, #2 phase-shifting transformers, #2 integrated protections for 2 sections by high-voltage fence
Device, #2 power cabinet and #2 based on IEGT units feed out cabinet, and by #2 feed out cabinet output end connection double-winding synchronous motor around
Group two.
5. a kind of double winding heavy-duty motor RHVC based on IEGT according to claim 1, its feature exist
In, described energized circuit is sequentially connected #3 High-voltage Incoming Cabinets, transformer and excitation cubicle for 3 sections by high-voltage fence, and by excitation cubicle
Output end connects the Exciting Windings for Transverse Differential Protection of double-winding synchronous motor.
6. a kind of double winding heavy-duty motor RHVC based on IEGT according to claim 1, its feature exist
In described RHVC control system, being controlled respectively to the power cabinet based on IEGT units two sets Suo Shu.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720469301.8U CN206977341U (en) | 2017-04-28 | 2017-04-28 | A kind of double winding heavy-duty motor RHVC based on IEGT |
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| CN201720469301.8U CN206977341U (en) | 2017-04-28 | 2017-04-28 | A kind of double winding heavy-duty motor RHVC based on IEGT |
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| CN206977341U true CN206977341U (en) | 2018-02-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204532A (en) * | 2021-10-25 | 2022-03-18 | 北京无线电测量研究所 | Distribution circuit for reducing starting impact current of transformer in radar system |
-
2017
- 2017-04-28 CN CN201720469301.8U patent/CN206977341U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204532A (en) * | 2021-10-25 | 2022-03-18 | 北京无线电测量研究所 | Distribution circuit for reducing starting impact current of transformer in radar system |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 114000 212 Yue Ling Road, Anshan, Liaoning Patentee after: Rongxin Huike Electric Co.,Ltd. Address before: 114000 212 Yue Ling Road, Anshan, Liaoning Patentee before: RONGXIN HUIKE ELECTRIC TECHNOLOGY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |