CN2308229Y - High-power electronic ballast - Google Patents
High-power electronic ballast Download PDFInfo
- Publication number
- CN2308229Y CN2308229Y CN 97235235 CN97235235U CN2308229Y CN 2308229 Y CN2308229 Y CN 2308229Y CN 97235235 CN97235235 CN 97235235 CN 97235235 U CN97235235 U CN 97235235U CN 2308229 Y CN2308229 Y CN 2308229Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- power factor
- inverter circuit
- electronic ballast
- excitation type
- 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 - Fee Related
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- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model discloses a novel high-power factor electronic ballast, which is composed of a bridge rectifier circuit, a voltage boosting and voltage stabilizing circuit and a self-excitation type inverter circuit. The novel high-power factor electronic ballast omits a switch tube in the self-excitation type inverter circuit, and ensures a switch tube in the voltage boosting and voltage stabilizing circuit to be multiplex; the circuit is simplified; the harmonic content is reduced; output waveforms are made to have favorable sinusoidal characteristic; the power factor is as high as 0.995; the efficiency can reach 91.9%. Consequently, a corresponding fluorescent lamp has low noise, high brightness and high energy-saving efficiency. The novel high-power factor electronic ballast achieves the overall performances of electronic ballasts required for realizing 'green illumination engineering', and has appreciable applied prospects.
Description
The utility model relates to a kind of ballast, relates in particular to a kind of high power factor electronic ballast.
Along with the progress of power electronic technology and the exploitation of unsteady flow new unit, in fluorescent lamp (energy-saving fluorescent lamp), adopt electric ballast to replace the inductance type ballast that tradition falls behind, be that China is in the enforcement period of the ninth five-year plan major reform measure, relevant department such as State Economic and Trade Commission and Electricity Department has determined and has disposed enforcement " Green Lighting Project ".Realize " Green Lighting Project " that country can save substantial contribution, saves a large amount of electric energy, can reduce simultaneously because of of the pollution of generating generation sulfur dioxide to air.And electric ballast is to realize " Green Lighting Project " unique feasible product.Institute sale of electricity sub-ballast in the market, it mostly is the ballast of the nonlinear characteristic electronic circuit formation of reactive factor calibration function, but this ballast can produce abundant high order harmonic when working and have only lower effective value, and its power factor is away from national standard.Can produce very big surge current when using simultaneously, cause input voltage and current waveform seriously to distort, influence the power supplying efficiency of electric power system, even cause and burn electric equipment, have also because of the excessive breaking out of fire of its electric current.At present usually the AC-DC-AC circuit of design comprises and converts input voltage the bridge rectifier, booster circuit of direct current to and the bridge inverter main circuit that direct current is converted into interchange is formed, it finishes power factor correction by Current Control, take turns conducting or end by the dual switch in the switch controlled inverter circuit in the booster circuit, but exist the circuit complexity, cost height, the defective that power factor is low.
The purpose of this utility model is: provide that a kind of circuit is simple, cost is low, power factor is high, can really realize the electric ballast of " Green Lighting Project ".
The utility model is with the switching tube in the switching tube double as inverter circuit in the voltage boosting and stabilizing circuit, play the multiplexing effect of a pipe, simplified circuit, reach and when input voltage changes, can stablize the constant substantially purpose of preposing conversion device output voltage, realize that power factor height, the harmonic content of electricity-saving lamp is low.
The utility model has been simplified circuit because a pipe is multiplexing, and harmonic content is few, has good sine, and power factor is up to 0.995, and efficient can reach 91.9%.Make that the fluorescent lamp noise that is mated use is little, brightness is high, energy-saving efficiency is high, reach the required electric ballast over-all properties of realization " Green Lighting Project ", have considerable utilization prospect.
Fig. 1: be the available circuit schematic diagram
Fig. 2: be circuit diagram of the present utility model
Below in conjunction with accompanying drawing the utility model is elaborated.
Existing AC-DC-AC electric ballast is by D
1-D
4Bridge rectifier, booster circuit and auto-excitation type inverter circuit are formed.Booster circuit is by step-up transformer L
1, filter capacitor C
1, diode D
1And switching tube VT
1Form, and the auto-excitation type inverter circuit is by switching tube VT
2, VT
3The normal formula inverter circuit that constitutes.
The utility model is by D
1-D
4Bridge rectifier, voltage boosting and stabilizing circuit and auto-excitation type inverter circuit are formed, and voltage boosting and stabilizing circuit is by diode VD
3Serial connection step-up transformer L
1, switching tube VT
1, filter capacitor C
1And other Resistor-Capacitor Unit Rx, VDT formation, so that the direct-current working volts of inverter circuit to be provided.The auto-excitation type inverter circuit adopts common standard formula inverter circuit to take turns the cut-off type conducting by dual switch, switching tube VT
1Double as inverter circuit one switching tube.Be that the auto-excitation type inverter circuit is by switching tube VT
1, VT
2, transformer LT
1, LT
2, LT
3, capacitor C X and other element constitute.
Claims (1)
1, a kind of novel high-power factor electronic ballast is made of bridge rectifier, voltage boosting and stabilizing circuit, auto-excitation type inverter circuit, and it is characterized in that: voltage boosting and stabilizing circuit is by diode (VD
3) serial connection step-up transformer (L
1), filter capacitor (C
1), switching tube (VT
1) and other Resistor-Capacitor Unit (Rx, VDT) formation; The auto-excitation type inverter circuit adopts common standard formula inverter circuit to be ended or conducting switching tube (VT in turn by dual switch
1) switching tube in the double as inverter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97235235 CN2308229Y (en) | 1997-08-09 | 1997-08-09 | High-power electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97235235 CN2308229Y (en) | 1997-08-09 | 1997-08-09 | High-power electronic ballast |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2308229Y true CN2308229Y (en) | 1999-02-17 |
Family
ID=33946390
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97235235 Expired - Fee Related CN2308229Y (en) | 1997-08-09 | 1997-08-09 | High-power electronic ballast |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2308229Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112689364A (en) * | 2021-01-21 | 2021-04-20 | 矽力杰半导体技术(杭州)有限公司 | Power converter |
| CN112689363A (en) * | 2021-01-21 | 2021-04-20 | 矽力杰半导体技术(杭州)有限公司 | Power converter |
-
1997
- 1997-08-09 CN CN 97235235 patent/CN2308229Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112689364A (en) * | 2021-01-21 | 2021-04-20 | 矽力杰半导体技术(杭州)有限公司 | Power converter |
| CN112689363A (en) * | 2021-01-21 | 2021-04-20 | 矽力杰半导体技术(杭州)有限公司 | Power converter |
| CN112689364B (en) * | 2021-01-21 | 2023-11-14 | 矽力杰半导体技术(杭州)有限公司 | power converter |
| CN112689363B (en) * | 2021-01-21 | 2024-04-16 | 矽力杰半导体技术(杭州)有限公司 | Power converter |
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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 |