CN206074654U - A kind of Large Copacity tunable load device - Google Patents
A kind of Large Copacity tunable load device Download PDFInfo
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- CN206074654U CN206074654U CN201621079836.6U CN201621079836U CN206074654U CN 206074654 U CN206074654 U CN 206074654U CN 201621079836 U CN201621079836 U CN 201621079836U CN 206074654 U CN206074654 U CN 206074654U
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- load
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- throw switch
- spdt
- pole double
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Abstract
The utility model discloses a kind of Large Copacity tunable load device, is mainly used in electrical equipment and electrical engineering technical field, including some segment loads, some single-pole double-throw switch (SPDT)s and two power source bus；Some segment loads are sequentially connected in series composition series load；Series load two ends and intermediate node are connected to the moved end of single-pole double-throw switch (SPDT)；Two static sides of single-pole double-throw switch (SPDT) are connected respectively on two power source bus；The moved end switching of single-pole double-throw switch (SPDT) produces different connection in series-parallel combinations to some segment loads during different static sides, forms multi gear load gear.When heavy duty is adjusted based on configuration in parallel, main to obtain wider load regulation range, in heavy duty, load increase, resistance value are reduced this utility model device, and the segment impedance of input in parallel is more, and current capacity and temperature rise heat-sinking capability are stronger；This utility model device when underloading is adjusted based on series configuration, it is main to obtain wider resistance range of accommodation.
Description
Technical field
This utility model is related to electrical equipment and electrical engineering technical field, especially Large Copacity tunable load device.
Background technology
Large Copacity tunable load (more than 10kVA) device is used in the electrical apparatus, compared to reduced-capacity load device
Speech, when Large Copacity tunable load device is designed, in addition to resistance value to be considered, in addition it is also necessary to which selective analysiss radiate and temperature rise situation；
Also need to consider insulation ability to bear when voltage is higher；Also need to consider the current-carrying of switching contact or switch when electric current is larger
Ability；Even as big capacity load component size is huge, how to optimize structure and all seem extremely important.Reduced-capacity load device
Can very easily be designed to the form of continuously adjustabe or multi-gear adjustable, but for Large Copacity tunable load device, due to
Voltage is higher and electric current is larger, it is difficult to the continuously adjustabe load device of traditional mechanical adjustable type is designed to, in order to improve reliability
With it is cost-effective, be typically all designed to the tunable load device of multi-gear adjustable form.
When traditional multistage tunable load device is designed, pure in parallel or pure cascade is generally configured to.Pure cascade
Tunable load device can be readily available wider impedance range of accommodation, but there is also serious deficiency, and hour is got in impedance, institute
The impedance material for using is fewer, and load is more increased, this from current-carrying, radiating and temperature rise on for be it is extremely disadvantageous, therefore
The heavily loaded regulating power of pure series system tunable load device is poor, is not suitable for Large Copacity especially vast capacity (1MVA)
Tunable load device；The tunable load device of pure parallel form, load are bigger, and impedance is less, and input resistance material is more,
Be conducive to temperature rise and radiating, but impedance range of accommodation relative narrower, and underloading regulating power is weaker.
Utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art, proposes a kind of Large Copacity tunable load device.This
Utility model device occupies little space, and stock utilization is high, temperature rise good heat dissipation effect, you can obtains larger impedance and adjusts model
Enclose, larger load regulation range can be obtained again, moreover it is possible to take into account and obtain thinner regulation granularity.
This utility model solves the technical scheme adopted by its technical problem：
A kind of Large Copacity tunable load device, including some segment loads, some single-pole double-throw switch (SPDT)s and two power supply mothers
Line；Some segment loads are sequentially connected in series composition series load；The head end and tail end of the series load and series connection are negative
Node in load between two segment loads is connected to the moved end of single-pole double-throw switch (SPDT), and two static sides of single-pole double-throw switch (SPDT) connect respectively
It is connected to different power source bus；The moved end switching of single-pole double-throw switch (SPDT) is produced not to some segment loads during different static sides
Same connection in series-parallel combination, forms multi gear load gear.
Preferably, tunable load device also includes one or two single-pole single-throw switch (SPST)；The head end of the series load and/
Or tail end is connected to one end of single-pole single-throw switch (SPST), the other end of single-pole single-throw switch (SPST) is connected to any one power source bus.
Preferably, the head end and/or tail end of the series load is directly connected to any one power source bus.
The beneficial effect brought of technical scheme that this utility model is provided is：
(1) tunable load device of the present utility model, using less impedance material and switch, realizes more impedance group
Conjunction state, can both be combined into pure series connection to obtain wider impedance range of accommodation；Can also be combined into pure
Parallel connection is obtaining wider load regulation range；Connection in series-parallel admixture can be combined into even, it is thinner to obtain
Regulation granularity.
(2) tunable load device of the present utility model, occupies little space, and stock utilization is high, temperature rise good heat dissipation effect, i.e.,
Larger impedance range of accommodation is obtained, larger load regulation range can be obtained again, moreover it is possible to take into account and obtain thinner regulation
Granularity.
This utility model is described in further detail below in conjunction with drawings and Examples, but it is of the present utility model a kind of big
Capacity tunable load device is not limited to embodiment.
Description of the drawings
Circuit diagrams of the Fig. 1 for this utility model embodiment 1；
Circuit diagrams of the Fig. 2 for this utility model embodiment 2；
Circuit diagrams of the Fig. 3 for this utility model embodiment 3.
Specific embodiment
This utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment 1
As shown in figure 1, a kind of Large Copacity tunable load device, including some segment loads Z1～ZN, some single-pole double throws open
Close K0～KNAnd two power source bus A and B；Some segment loads are sequentially connected in series composition series load；The series connection is negative
The head end C of load, the node D between tail end E and two segment loads1～DN-1It is connected respectively to the moved end of single-pole double-throw switch (SPDT), hilted broadsword
Two static sides of commutator are connected respectively to different power source bus；The moved end switching of single-pole double-throw switch (SPDT) is to different static sides
The some segment loads of Shi Suoshu produce different connection in series-parallel combinations, form multi gear load gear.
In the present embodiment, the load includes the impedance of resistance, electric capacity, inductance or its compound mode；The power source bus
It can be AC or DC bus.
It is in the present embodiment, when underloading is adjusted based on series configuration, main to obtain wider impedance range of accommodation；Heavy duty is adjusted
It is during section based on configuration in parallel, main to obtain wider load regulation range；Additionally can with connection in series-parallel mixing configuration mode,
Some intervening gears are obtained, to obtain thinner regulation granularity；In heavy duty, load increase, resistance value are reduced, input in parallel
Segment impedance is more, and current capacity and temperature rise heat-sinking capability strengthen.
Embodiment 2
As shown in Fig. 2 a kind of Large Copacity tunable load device, including some segment loads Z1～ZN, some single-pole double throws open
Close K1～KN-1, two single-pole single-throw switch (SPST) K0And KN, and two power source bus A and B；Some segment loads are sequentially connected in series company
Connect composition series load；The head end C and tail end E of the series load are connected respectively to one end of single-pole single-throw switch (SPST), hilted broadsword list
The other end of throw switch is connected to any one power source bus；Node D in series load between two segment loads1～DN-1Even
The moved end of single-pole double-throw switch (SPDT) is connected to, two static sides of single-pole double-throw switch (SPDT) are connected respectively to different power source bus；Hilted broadsword is double
The moved end switching of throw switch produces different connection in series-parallel combinations to some segment loads during different static sides, forms multi gear and bears
Carry gear.
In the present embodiment, the load includes the impedance of resistance, electric capacity, inductance or its compound mode；The power source bus
Including AC or DC bus.
The beneficial effect of the present embodiment is with embodiment 1.
Embodiment 3
As shown in figure 3, a kind of Large Copacity tunable load device, including some segment loads Z1～ZN, some single-pole double throws open
Close K1～KN-1And two power source bus A and B；Some segment loads are sequentially connected in series composition series load；The series connection
The head end C and tail end E of load is directly connected to any one power source bus, the section in series load between two segment loads
Point D1～DN-1The moved end of single-pole double-throw switch (SPDT) is connected to, two static sides of single-pole double-throw switch (SPDT) are connected respectively to different power supplys
Bus；The moved end switching of single-pole double-throw switch (SPDT) produces different connection in series-parallel groups to some segment loads during different static sides
Close, form multi gear load gear.
In the present embodiment, the load includes the impedance of resistance, electric capacity, inductance or its compound mode；The power source bus
Including AC or DC bus.
The beneficial effect of the present embodiment is with embodiment 1.
The head end and tail end that series load is only listed in above-described embodiment is adopted,
Obviously, the head end and tail end of series load described in the utility model may also take on different modes and be linked into power source bus.
Scheme is using based on the networking of embodiment 1, the utility model is described in further detail in detail below.For
Explanation device characteristic more directly perceived and succinct, it is assumed that Z1～ZNFor purely resistive load element, and assume three kinds of switch on-off
State is：A- switches are switched to the static side of connection bus A, B- switches and are switched to the static side of connection bus B, NA- and switch off not
It is closed into static side.
Embodiment one：
N=5 is made to be analyzed.It is assumed that Z1～Z5For the overall continuous double wrap of the single resistance material of use or reciprocal coiling
Noninductive resistance, middle uniform tap, i.e. resistance value are respectively Z1=Z2=Z3=Z4=Z5=R, the permission power of 5 sections of resistance is all
U2/ R, switchs K0Save, head end directly connects A-bus.
Tunable load device effective resistance gear and correspondence on off state such as table 1.
Table 1
This programme has the beneficial effect that：
(1) with 5 sections of resistance and 5 switches, it is possible to be combined into 15 resistance gears, scope is 0.2R～5R, maximum times
Difference:5R/0.2R=25.
(2) resistance uses homogenous material continuous coiling, middle uniform tap, simple structure, low cost to safeguard simple.
(3) whole contact capacities are consistent, as long as the 2/5 of rated capacity, it is cost-effective, reduce space hold.
(4) in heavy duty, resistance is less, and load is bigger, and the resistance material for coming into operation is more, and stock utilization is high, temperature
Rise radiating condition superior, be adapted to be designed to super large power load.
(5) as long as applied voltage is less than rated voltage, any switching of switch is will not result on any one section of resistance
Electric current exceed rated current, it is safe and reliable.
Concrete case：Certain chopper overload test system, bus rated voltage 1000VDC test conduction time
200ms, R=0.5 Ω, the effective resistance used/load gear such as table 2.
Table 2
Embodiment two：
Make N=6 to analyze.It is assumed that ZXFor double wrap or the noninductive resistance of reciprocal coiling, resistance value R, it is allowed to which power is U2/R；
Z1、Z2、Z3Respectively with four ZXResistor coupled in parallel (can also be conductor material, length and ZXIt is identical, but conductor cross sectional area is ZX4
Resistance again), resistance value is Z1=Z2=Z3=R/4；Z4、Z5、Z6Use single ZXResistance, resistance value are Z4=Z4=Z5=R；Open
Close K0Save, head end directly connects A-bus.
Tunable load device effective resistance gear and correspondence on off state such as table 3.
Table 3
This programme has the beneficial effect that：
(1) as long as using a kind of resistance material, low cost safeguards simple.
(2) in heavy duty, load is bigger, and resistance is less, and the resistance material for coming into operation is more, and stock utilization is high, temperature
Rise radiating condition superior, be adapted to be designed to super large power load.
(3) as long as applied voltage is less than rated voltage, any switching of switch is will not result on any one section of resistance
Electric current exceed rated current, it is safe and reliable.
(4) 15 grades of resistance (underloading regulation) of equalization only can be obtained with pure series connection method, while only can use
Pure parallel method is obtained 15 grades of loads (heavy duty is adjusted) of equalization；Resistance adjustable extent is 1/15R～15/4R, maximum times
Difference:(15/4R)/(1/15R)=56.25.
Concrete case：Certain chopper overload test system, bus rated voltage 1000VDC test conduction time
100ms, R=1 Ω, the effective resistance gear used such as table 4.
Table 4
Preferred embodiment of the present utility model is the foregoing is only, it is not to limit this utility model, all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (3)
1. a kind of Large Copacity tunable load device, including some segment loads, some single-pole double-throw switch (SPDT)s and two power source bus；
It is characterized in that：Some segment loads are sequentially connected in series composition series load；Series load two ends and two segment loads
Between node be connected to the moved end of single-pole double-throw switch (SPDT), two static sides of single-pole double-throw switch (SPDT) are connected respectively to different power supplys
Bus；The moved end switching of single-pole double-throw switch (SPDT) produces different connection in series-parallel groups to some segment loads during different static sides
Close, form multi gear load gear.
2. Large Copacity tunable load device according to claim 1, it is characterised in that：
Also include one or two single-pole single-throw switch (SPST)；The head end and/or tail end of the series load is connected to single-pole single-throw(SPST and opens
One end of pass, the other end of single-pole single-throw switch (SPST) are connected to any one power source bus.
3. Large Copacity tunable load device according to claim 1, it is characterised in that：
The head end and/or tail end of the series load is directly connected to any one power source bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621079836.6U CN206074654U (en) | 2016-09-26 | 2016-09-26 | A kind of Large Copacity tunable load device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621079836.6U CN206074654U (en) | 2016-09-26 | 2016-09-26 | A kind of Large Copacity tunable load device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206074654U true CN206074654U (en) | 2017-04-05 |
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ID=58440577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621079836.6U Withdrawn - After Issue CN206074654U (en) | 2016-09-26 | 2016-09-26 | A kind of Large Copacity tunable load device |
Country Status (1)
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| CN (1) | CN206074654U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199093A (en) * | 2016-09-26 | 2016-12-07 | 华侨大学 | A kind of Large Copacity tunable load device |
-
2016
- 2016-09-26 CN CN201621079836.6U patent/CN206074654U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106199093A (en) * | 2016-09-26 | 2016-12-07 | 华侨大学 | A kind of Large Copacity tunable load device |
| CN106199093B (en) * | 2016-09-26 | 2022-12-06 | 华侨大学 | Large-capacity adjustable load device |
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Granted publication date: 20170405 Effective date of abandoning: 20221206 |
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| AV01 | Patent right actively abandoned |
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