CN2648762Y - DC bus type power supply high voltage gas discharge lamp electronic ballast system - Google Patents
DC bus type power supply high voltage gas discharge lamp electronic ballast system Download PDFInfo
- Publication number
- CN2648762Y CN2648762Y CN 03256145 CN03256145U CN2648762Y CN 2648762 Y CN2648762 Y CN 2648762Y CN 03256145 CN03256145 CN 03256145 CN 03256145 U CN03256145 U CN 03256145U CN 2648762 Y CN2648762 Y CN 2648762Y
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- CN
- China
- Prior art keywords
- bus
- power supply
- electronic ballast
- discharge lamp
- filtering circuit
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- Expired - Lifetime
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Abstract
The utility model provides an electronic ballast system of a DC bus type powered high-pressure gas discharge lamp, which comprises a plurality of inverter circuits of the electronic ballast, a rectification and filtering circuit which is commonly used by a plurality of the inverter circuits and a DC bus. The output end of the rectification and filtering circuit is connected with the input end of the DC bus. A plurality of the output ends of the DC bus are respectively connected with the input ends of a plurality of the inverter circuit. As one primary rectification and filtering circuit is adopted for the power supply of a plurality of the electronic ballasts, the utility model can achieve the split designing of the rectification and filtering circuit and the inverter circuit, which facilitates the heat dissipation, improves the efficiency and reliability of the system and easily achieves the uninterrupted power supply and lighting.
Description
Technical field
The utility model relates to a kind of electronic ballast for high-pressure discharge lamp system of dc bus formula power supply.
Background technology
Advantages such as high-voltage gas discharging light (HID) is to belong to energy-saving electric light source, has been widely used in the illuminations such as traffic, municipal administration, factory, and it has the light efficiency height, and the life-span is long.But traditional inductive type ballast or the electric ballast of the most of employing of present HID.There are many defectives in traditional inductance type ballast: (1) volume is big, heavy, it is low to consume a large amount of metal materials (2) power factor, there is the power frequency flicker in utilization rate of electrical low (3) starting current impact big (4), and light changes with voltage ripple of power network usually.Conventional electric ballast comprises current rectifying and wave filtering circuit and inverter circuit two parts.Mostly adopt the AC/DC/AC integral structure at present, be current rectifying and wave filtering circuit and inverter circuit with the structure that is contained in the housing, there is following deficiency: the power consumption of (1) rectifying and wave-filtering and the power consumption of inverter circuit are all got together, cause heat radiation difficult easily, temperature rise problem (2) rectifying and wave-filtering and inverter circuit are installed in the same housing, volume is difficult for miniaturization, and weight also is difficult for reducing.(3) efficient of the electron rectifier of integral type can not reach very high.(4) its reliability is lower.
Summary of the invention
The purpose of this utility model provides a kind of electronic ballast for high-pressure discharge lamp system of dc bus formula power supply, with efficient and the reliability that improves system greatly.
For reaching above-mentioned purpose, technical solution of the present utility model is with n current rectifying and wave filtering circuit in a total n integral type rectifier of current rectifying and wave filtering circuit replacement.
The electronic ballast for high-pressure discharge lamp system of dc bus formula power supply, comprise the inverter circuit of several electric ballasts, a current rectifying and wave filtering circuit and the dc bus that several inverter circuits of confession are shared, the output of current rectifying and wave filtering circuit links to each other with the input of dc bus, and some outputs of dc bus link to each other with the input of several inverter circuits respectively.
The utility model is owing to adopt a total current rectifying and wave filtering circuit to give the inverter circuit power supply of several electric ballasts, can realize that current rectifying and wave filtering circuit and inverter circuit divide body device, be beneficial to heat radiation, improve the efficient and the reliability of system, and easily realize the uninterrupted power supply illumination.
Description of drawings
Fig. 1 is that the electronic ballast for high-pressure discharge lamp system of dc bus formula power supply constitutes block diagram.
Specific implementation method
With reference to the electronic ballast for high-pressure discharge lamp system of Fig. 1 dc bus formula power supply, comprise the inverter circuit 3 of several conventional electrical ballasts, a current rectifying and wave filtering circuit 1 that several inverter circuits of confession are shared and a dc bus 2.The output of current rectifying and wave filtering circuit 1 links to each other with the input of dc bus 2, and this current rectifying and wave filtering circuit 1 can adopt the circuit of PFC or general circuit such as bridge rectifier, changes the alternating current unification of electrical network into direct current.Some outputs of dc bus 2 link to each other with the input of several inverter circuits 3 respectively, the direct current of current rectifying and wave filtering circuit output is transported to each inverter circuit, direct current is passed through the required 200HZ-100KHZ alternating current of DC/AC conversion being transformed into HID lamp by inverter circuit.
For when meeting accident fault, can guarantee uninterrupted power supply, be preferably in and insert battery on the dc bus.When electrical network had electricity, current rectifying and wave filtering circuit was powered at dc bus, and battery is charged.When electrical breakdown, battery discharge, battery-powered in dc bus, thus reach the function that uninterrupted power supply throws light on.
Claims (2)
1. the electronic ballast for high-pressure discharge lamp system of dc bus formula power supply, the inverter circuit (3) that comprises several electric ballasts, it is characterized in that the current rectifying and wave filtering circuit (1) and the dc bus (2) that comprise that also several inverter circuits of confession (3) are shared, the output of current rectifying and wave filtering circuit (1) links to each other with the input of dc bus (2), and some outputs of dc bus (2) link to each other with the input of several inverter circuits (3) respectively.
2. by the electronic ballast for high-pressure discharge lamp system of the described dc bus formula power supply of claim 1, it is characterized in that on dc bus (2), being connected to battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256145 CN2648762Y (en) | 2003-07-28 | 2003-07-28 | DC bus type power supply high voltage gas discharge lamp electronic ballast system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03256145 CN2648762Y (en) | 2003-07-28 | 2003-07-28 | DC bus type power supply high voltage gas discharge lamp electronic ballast system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2648762Y true CN2648762Y (en) | 2004-10-13 |
Family
ID=34328724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03256145 Expired - Lifetime CN2648762Y (en) | 2003-07-28 | 2003-07-28 | DC bus type power supply high voltage gas discharge lamp electronic ballast system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2648762Y (en) |
-
2003
- 2003-07-28 CN CN 03256145 patent/CN2648762Y/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 | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130728 Granted publication date: 20041013 |