CN2653759Y - Variable frequency emergency power source - Google Patents
Variable frequency emergency power source Download PDFInfo
- Publication number
- CN2653759Y CN2653759Y CN 02295433 CN02295433U CN2653759Y CN 2653759 Y CN2653759 Y CN 2653759Y CN 02295433 CN02295433 CN 02295433 CN 02295433 U CN02295433 U CN 02295433U CN 2653759 Y CN2653759 Y CN 2653759Y
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- China
- Prior art keywords
- power supply
- frequency
- frequency converter
- emergency power
- connects
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Stand-By Power Supply Arrangements (AREA)
Abstract
The utility model is a frequency conversion emergency power supply, including a transducer with automatic frequency adjustment. The AC input end of the transducer connects the commercial power, while the DC input end is provided with a power supply storage battery and a charger. Based on the transducer, the utility model aims to provide a lash-up, stable and reliable three-phase emergency power supply when power supply is normal. Besides the advantages of low noise, small size, simple maintenance, quick reaction and frequency transfer start of the prior transducer, the utility model also has the advantages of no pollution, high safety, low load matching and low investment, with higher reliability when using a standby output mode in particular.
Description
Affiliated technical field
The utility model belongs to power electronic technology, is specifically related in case of emergency, and when civil power stops, timely drive motors or the frequency conversion emergency power plant of electric consumption on lighting is provided.
Background technology
Before the utility model was made, in fire-fighting, field such as recover, used power frequency conversion emergency power supply was from diesel generating set at present.This power supply has the following disadvantages:
1. the equipment operation noise is big, and exhaust, smoke evacuation are serious, contaminated environment;
2. must adopt fire prevention, shockproof, oil storage, air inlet, smoke evacuation (gas) measure, poor stability, dangerous big when equipment is installed;
3. long, poor reliability of this device start time, the equipment maintenance cost height, equipment and engineering overall cost are expensive;
4. the capacity of power-supply device will be higher than more than 3: 1 than generally with the load capacity apolegamy, strengthens equipment investment and operating cost.
And the frequency converter that is widely used at present, can carry out processing such as rectification, frequency conversion, inversion to civil power, can be implemented in load such as dragging motor under the state of normal power supply, it has, and noise is low, volume is little, maintenance is simple, be swift in response, start after gradually frequency conversion can not impact advantages such as being driven motor.
Summary of the invention
The purpose of this utility model is to provide a kind of regulated power can be provided when the mains failure for addressing the above problem, and according to the frequency conversion emergency power supply of the automatic regulating frequency of situation of load.
For achieving the above object, the utility model is to realize like this, a kind of frequency conversion emergency power supply, comprise the frequency converter of regulating frequency automatically, the ac input end of described frequency converter connects civil power by selector switch, the dc terminal of described frequency converter connects batteries, and described batteries connects charger, and the ac output end of described frequency converter connects load as the output of this frequency conversion emergency power supply.
The self-regulating scope of frequency converter of the automatic regulating frequency of above-mentioned energy is at least at 0HZ～50HZ.
The frequency converter of the automatic regulating frequency of above-mentioned energy is two frequency converters independently in parallel, forms the output of two-way output or the using and the reserved form, these two independently frequency converter by same group selection switch and same group storage battery group drive controlling.
Above-mentioned frequency converter and storage battery are configured in the housing.
Advantage and good effect
Advantage of the present utility model and good effect are to form the frequency conversion emergency power supply with storage battery and frequency converter; It is simple in structure, safe and practical, economic and reliable, easy and simple to handle, and the length of power-on time can be by the capacity decision of battery simultaneously.And mobility is strong, can be transported to the field or interim application site provides the three-phase electrical source of power with motor vehicles.Especially run into that normal power supply has a power failure suddenly or because emergencies such as fire earthquake or human accident when having a power failure at skyscraper, miscellaneous equipments such as the fire-fighting of these skyscrapers, water pump must guarantee to move a period of time, danger more likely occurs otherwise can make troubles to people; Adopt this frequency conversion emergency power supply can in Millisecond, realize emergency service.When normal power supply recovers, can change normal power supply automatically over to again.This frequency conversion emergency power supply can also provide electrical source of power by equipment such as water supply pump in fire-fighting is combated a natural disaster.
Description of drawings
Fig. 1 is a three-dimensional structure diagram of the present utility model;
Fig. 2 is the electrical schematic diagram of the utility model embodiment one;
Fig. 3 is the electrical schematic diagram of the utility model embodiment two.
Specific embodiment
Embodiment one:
As Fig. 1, shown in Figure 2, a kind of frequency conversion emergency power supply, comprise the frequency converter 1 of regulating frequency automatically, this the highest or low-limit frequency the when scope of frequency converter 1 frequency adjustment of regulating frequency needs according to loaded work piece is automatically selected, because the frequency of the alternating current of Chinese electrical network is so that the lowest range interval that this frequency converter of 50HZ will satisfy is 0HZ～50HZ, the ac input end of frequency converter 1 connects civil power by selector switch KM1, the dc terminal of frequency converter 1 connects batteries 3 through K switch M2, this batteries 3 also connects charger 5, charger 5 is also by mains-supplied, and the ac output end of frequency converter 1 connects load 4 as the output of this frequency conversion emergency power supply.Frequency converter 1 and storage battery 2 are configured in the housing 7.
Embodiment two:
As Fig. 1, shown in Figure 3, in order to increase the reliability of whole emergency power supply, can such as embodiment one on the basis of description emergency power supply, automatically the frequency converter 1 of regulating frequency is set in parallel two independently frequency converter 1a, 1b, form the output form of two-way output or the using and the reserved,, make more compact structure in order to save the space, simultaneously in order to save cost, these two independently frequency converter 1a, 1b by same group selection K switch M1 and same group storage battery group 3 drive controlling.
During use, when normal power supply, alternating current becomes direct current through the rectifier bridge in the frequency converter, is reverse into through inverter bridge again and exchanges output; Storage battery charges standby again by charger.When normal power supply stopped, storage battery started automatically, and direct current energy provides three-phase power through after the inversion to the outside; When normal power supply recovers, enter the normal power supply running status automatically.
The main inventive point of this patent is to dispose storage battery on the basis of frequency converter, makes it can be used as power supply and uses; As for these frequency converter input and output is unidirectional or three-phase, unimportant for the utility model; So the no matter input of frequency converter, output are several phases, as long as frequency converter is disposed power supply storage battery all within the protection range of this patent.If simultaneously this emergency power supply is arranged to as embodiment two describedly like that, adopt two groups of outputs in parallel, the output form of formation the using and the reserved, more reliable; Be particularly useful for the requirement of units such as airport, army, bank, security and department.
Claims (4)
1. frequency conversion emergency power supply, it is characterized in that: comprise the frequency converter (1) of regulating frequency automatically, the ac input end of described frequency converter (1) connects civil power by selector switch (KM1), the dc terminal of described frequency converter (1) connects batteries (3), described batteries (3) connects charger (5), and the ac output end of described frequency converter (1) connects load (4) as the output of this frequency conversion emergency power supply.
2. frequency conversion emergency power supply according to claim 1 is characterized in that: the self-regulating scope of frequency converter (1) of the automatic regulating frequency of above-mentioned energy is 0HZ～50HZ.
3. frequency conversion emergency power supply according to claim 1 and 2, it is characterized in that: the frequency converter (1) of the automatic regulating frequency of above-mentioned energy is two-way output or the output of the using and the reserved form two frequency converter (1a, 1b) parallel-connection structures independently, these two independently frequency converter (1a, 1b) connect same group selection switch (KM1) and same group storage battery group (3) drive controlling.
4. frequency conversion emergency power supply according to claim 3 is characterized in that: above-mentioned frequency converter (1) and storage battery (3) are configured in the housing (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295433 CN2653759Y (en) | 2002-12-31 | 2002-12-31 | Variable frequency emergency power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02295433 CN2653759Y (en) | 2002-12-31 | 2002-12-31 | Variable frequency emergency power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2653759Y true CN2653759Y (en) | 2004-11-03 |
Family
ID=34319082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02295433 Expired - Fee Related CN2653759Y (en) | 2002-12-31 | 2002-12-31 | Variable frequency emergency power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2653759Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459396C (en) * | 2006-12-13 | 2009-02-04 | 上海新时达电气股份有限公司 | Precharging circuit for converter |
| CN112421758A (en) * | 2020-11-16 | 2021-02-26 | 合肥联信电源有限公司 | Power emergency power supply with anti-interference function |
-
2002
- 2002-12-31 CN CN 02295433 patent/CN2653759Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100459396C (en) * | 2006-12-13 | 2009-02-04 | 上海新时达电气股份有限公司 | Precharging circuit for converter |
| CN112421758A (en) * | 2020-11-16 | 2021-02-26 | 合肥联信电源有限公司 | Power emergency power supply with anti-interference function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |