CN201403070Y - Aluminum casing resistor for variable-frequency governor - Google Patents
Aluminum casing resistor for variable-frequency governor Download PDFInfo
- Publication number
- CN201403070Y CN201403070Y CN200920068018XU CN200920068018U CN201403070Y CN 201403070 Y CN201403070 Y CN 201403070Y CN 200920068018X U CN200920068018X U CN 200920068018XU CN 200920068018 U CN200920068018 U CN 200920068018U CN 201403070 Y CN201403070 Y CN 201403070Y
- Authority
- CN
- China
- Prior art keywords
- variable
- frequency governor
- aluminum casing
- rectifier bridge
- resistor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Y02P80/116—
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Abstract
An aluminum casing resistor used for a variable-frequency governor is connected with a power interface, and relates to a resistor used for a variable-frequency governor. The aluminum casing resistor further comprises a capacitor, a relay and a rectifier bridge, wherein the other end of the aluminum casing resistor is connected with the AC end of the rectifier bridge, the DC end of the rectifier bridge is respectively connected with the two ends of the capacitor through two polar tubes; the aluminum casing resistor can meet the requirements of high power during the work and improve the work efficiency through equalizing the current of the relay. The utility model has the benefits that the operating power of the variable-frequency governor is increased, a plurality of traditional cement resistors can be replaced by the aluminum casing resistor, and the errors are small when in use.
Description
Technical field:
The utility model relates to variable-frequency governor resistance, specifically is the aluminum hull resistance that is used on the variable-frequency governor.
Background technology:
At present, variable-frequency governor is by regulating mains frequency to regulate a kind of device of electromotor velocity, generally include rectifier, inverter and direct current component, wherein, rectifier converts the alternating current of input to direct current, and inverter converts direct current to the alternating current of required frequency again, the frequency converter that has also may comprise transformer and battery, wherein, transformer be used for changing voltage and can isolate input the circuit of output, battery is used for compensating the energy loss on the frequency converter internal wiring.Variable-frequency governor has that speed-regulating range width, adjusting speed accuracy height, dynamic response are fast, the advantage of high efficiency, therefore using variable-frequency governor not only can make motor move under energy-conservation speed, but also can improve the control precision of motor speed greatly, improve processing quality and production efficiency.
Traditional variable-frequency governor uses the mode of charging resistor, and promptly at a pair of electric shock both sides of relay charged in parallel resistance, and the charging resistor of long employing is a cement resistor, and powering up after-current flows through from cement resistor earlier, after a period of time again with the relay adhesive.For adopting cement resistor to satisfy the demands above the low power variable-frequency governor, just several cement resistors need be used together simultaneously in the time of still for powerful variable-frequency governor, increase installing space, the waste resource.And cement resistor normally in parallel use when arranging; though can reach the purpose of sharing electric current; if break down but such problem is easy to occur a cement resistor exactly; magnitude of current difference by two resistance; the heat that produces during work will be different; will certainly cause that parallel resistor is very fast also can to break down, error can reach 20% usually, greatly reduces adjusting speed accuracy.
The utility model content:
Technical problem to be solved in the utility model is to provide a kind of aluminum hull resistance place of cement resistance, satisfies the work requirements of high-power frequency conversion speed regulator.
The utility model for the technical scheme that the technical solution problem adopts is,
A kind of aluminum hull resistance that is used for variable-frequency governor links to each other with power interface, also comprises electric capacity, relay and rectifier bridge, links to each other at the other end of described aluminum hull resistance and the end that exchanges of rectifier bridge, and the dc terminal of rectifier bridge links to each other with the electric capacity two ends by two utmost point pipes respectively.
Described aluminum hull resistance can satisfy powerful demand when work, guarantee all to press by the electric current of relay, increases work efficiency.
The beneficial effect that the utility model produces is the operating power that increases variable-frequency governor, promptly can substitute traditional several cement resistors by an aluminum hull resistance, and uses time error little.
Description of drawings:
Fig. 1 is an aluminum hull resistance of the present utility model.
Embodiment:
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1, a kind of aluminum hull resistance that is used for variable-frequency governor comprises that electric capacity 1, aluminum hull resistance 2, relay 3, rectifier bridge 4, the two ends that also comprise power interface 5, described power interface 5 link to each other with the end that exchanges of rectifier bridge 4 by aluminum hull resistance 2 respectively, and the dc terminal of another rectifier bridge links to each other with electric capacity 1 by two diodes respectively.Wherein power interface 5 links to each other with outside three-phase 380V.
The utility model is before giving variable-frequency governor main power source three-phase 380V energising, switch on to power interface earlier, by rectifier bridge to bus, thereby give electric capacity 1 charging, the initial current of charging has 2 decisions of aluminum hull resistance, after charging 2 seconds, and relay 3 adhesives, at this moment send electricity to main power source again, finish start-up course.
More than show and described basic principle of the present utility model and technical characterictic and major advantage.The technical staff of the industry can understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all should fall in the claimed scope of the present utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (1)
1, a kind of aluminum hull resistance that is used for variable-frequency governor links to each other with power interface, it is characterized in that: also comprise electric capacity, relay and rectifier bridge, link to each other at the other end of described aluminum hull resistance and the end that exchanges of rectifier bridge, the dc terminal of rectifier bridge links to each other with the electric capacity two ends by two utmost point pipes respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068018XU CN201403070Y (en) | 2009-02-24 | 2009-02-24 | Aluminum casing resistor for variable-frequency governor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920068018XU CN201403070Y (en) | 2009-02-24 | 2009-02-24 | Aluminum casing resistor for variable-frequency governor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201403070Y true CN201403070Y (en) | 2010-02-10 |
Family
ID=41662869
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920068018XU Expired - Lifetime CN201403070Y (en) | 2009-02-24 | 2009-02-24 | Aluminum casing resistor for variable-frequency governor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201403070Y (en) |
-
2009
- 2009-02-24 CN CN200920068018XU patent/CN201403070Y/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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100210 |
|
| CX01 | Expiry of patent term |