CN205249516U - Three -phase step -down formula electromagnetism stove - Google Patents
Three -phase step -down formula electromagnetism stove Download PDFInfo
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- CN205249516U CN205249516U CN201521085442.7U CN201521085442U CN205249516U CN 205249516 U CN205249516 U CN 205249516U CN 201521085442 U CN201521085442 U CN 201521085442U CN 205249516 U CN205249516 U CN 205249516U
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Abstract
Three -phase step -down formula electromagnetism stove, including electromagnetic furnace body, electromagnetic furnace body in be provided with the circuit board, be connected with adjustable busbar voltage's control module on the circuit board, control module is controlling inductance, diode and power switch ware on the three -phase BUCK copped wave half -bridge resonance circuit, control module can also control the three -phase and control rectification half -bridge resonance circuit mutually. The utility model discloses following beneficial effect has: can be more high -efficient the output of regulation and control electromagnetism stove, reduce overall loss to the reduction is to the requirement of IGBT and coil panel.
Description
Technical field
The utility model belongs to household appliance technical field, is specifically related to three-phase step-down formula electromagnetic oven.
Background technology
Modern electromagnetic oven, consider for the easy to use of people everywhere, full automatic fuzzy design can realize Automatic-cooking, automatic gruel heating, automatically Baoshang, automatically stew, each complicated operation such as automatic heat preserving all becomes abnormal simple, only need gently press, electromagnetic oven just can complete each instruction automatically. It is provided with multistage firepower and selects, and it is the same with gas burner convenient to use. The timing function that it has is very convenient, and people can leave and do other thing, saves worry and saves time.
Existing Three-phase high-power electromagnetic oven, adopts three-phase not control rectification mostly, obtains the DC voltage of 540V left and right, then passes through bridge inverter main circuit, and the high-frequency alternating current of 20～40kHz is provided to coil panel.
The shortcoming of above-mentioned way is: 1. power regulation can only be by changing these single means of reverse frequency; 2. because the upper limiting frequency of IGBT switch is limited, therefore minimum power output is also limited; 3.IGBT can only realize soft open-minded, and cut-off current is very large, so loss ratio is larger.
Summary of the invention
For deficiency of the prior art, the utility model provides three-phase step-down formula electromagnetic oven, and solving power regulation can only be by changing reverse frequency, the problem that means are single.
The utility model is achieved through the following technical solutions.
Three-phase step-down formula electromagnetic oven, comprise electromagnetic oven body, in described electromagnetic oven body, be provided with circuit board, it is characterized in that, on described circuit board, be connected with the control module of adjustable busbar voltage, inductance, diode and the power switch device on three-phase BUCK copped wave half-bridge resonance circuit in described control module control, and described control module can also be controlled three-phase phase control rectifier half-bridge resonance circuit. By three-phase BUCK copped wave half-bridge resonance circuit or three-phase phase control rectifier half-bridge resonance circuit, according to electromagnetic oven power demand, in the scope of 540V left and right, dynamically adjust busbar voltage at 0V.
As preferably, described three-phase BUCK copped wave half-bridge resonance circuit comprises electronic devices and components inductance, diode and power switch device, and described power switch device connects inductance and diode, and described diode connects half-bridge resonance circuit.
As preferably, described three-phase BUCK copped wave half-bridge resonance circuit is connected with Phase control trigger circuit.
Compared with prior art: can more efficiently regulate and control the power output of electromagnetic oven, reduce overall loss, and reduce the requirement to IGBT and coil panel.
Brief description of the drawings
Fig. 1 is three-phase phase control rectifier half-bridge resonance figure of the present utility model.
Fig. 2 is three-phase BUCK copped wave half-bridge resonance figure of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the utility model is described further.
Three-phase step-down formula electromagnetic oven, comprise electromagnetic oven body, in described electromagnetic oven body, be provided with circuit board, on described circuit board, be connected with the control module of adjustable busbar voltage, the inductance on three-phase BUCK copped wave half-bridge resonance circuit in described control module control, diode and power switch device, described control module can also be controlled three-phase phase control rectifier half-bridge resonance circuit, described three-phase BUCK copped wave half-bridge resonance circuit comprises electronic devices and components inductance, diode and power switch device, described power switch device connects inductance and diode, described diode connects half-bridge resonance circuit, described three-phase BUCK copped wave half-bridge resonance circuit is connected with Phase control trigger circuit.
In Three-phase high-power electromagnetic oven, conventionally design resonance operating point is at minimum input voltage and maximum power output, therefore caused under other operating modes and can not realize optimum Working, by the phase tracker of three-phase BUCK copped wave half-bridge resonance circuit or three-phase phase control rectifier half-bridge resonance circuit and software program, the switching frequency of IGBT is locked near inductance capacitance resonant frequency, then by regulating varying DC link voltage power output. Load-carrying coil panel and resonance condenser network, can be equivalent to resistive load R, and according to power output P=V2/R, power output will be followed V2 direct ratio and be changed, and the frequency-tracking while both having met circuit parameter variations has also been realized power output and follow the regulation and control of gear.
Protection domain of the present utility model includes but not limited to above embodiment; protection domain of the present utility model is as the criterion with claims, and any replacement those skilled in the art will find apparent that this technology is made, distortion, improvement all fall into protection domain of the present utility model.
Claims (3)
1. three-phase step-down formula electromagnetic oven, comprise electromagnetic oven body, in described electromagnetic oven body, be provided with circuit board, it is characterized in that, on described circuit board, be connected with the control module of adjustable busbar voltage, inductance, diode and the power switch device on three-phase BUCK copped wave half-bridge resonance circuit in described control module control, and described control module can also be controlled three-phase phase control rectifier half-bridge resonance circuit.
2. three-phase step-down formula electromagnetic oven according to claim 1, it is characterized in that, described three-phase BUCK copped wave half-bridge resonance circuit comprises electronic devices and components inductance, diode and power switch device, described power switch device connects inductance and diode, and described diode connects half-bridge resonance circuit.
3. three-phase step-down formula electromagnetic oven according to claim 2, is characterized in that, described three-phase BUCK copped wave half-bridge resonance circuit is connected with Phase control trigger circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085442.7U CN205249516U (en) | 2015-12-24 | 2015-12-24 | Three -phase step -down formula electromagnetism stove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521085442.7U CN205249516U (en) | 2015-12-24 | 2015-12-24 | Three -phase step -down formula electromagnetism stove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205249516U true CN205249516U (en) | 2016-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521085442.7U Active CN205249516U (en) | 2015-12-24 | 2015-12-24 | Three -phase step -down formula electromagnetism stove |
Country Status (1)
| Country | Link |
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| CN (1) | CN205249516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116546682A (en) * | 2023-06-19 | 2023-08-04 | 昂策(佛山)电子有限公司 | Induction cooker resonance power control method and device and induction cooker |
-
2015
- 2015-12-24 CN CN201521085442.7U patent/CN205249516U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116546682A (en) * | 2023-06-19 | 2023-08-04 | 昂策(佛山)电子有限公司 | Induction cooker resonance power control method and device and induction cooker |
| CN116546682B (en) * | 2023-06-19 | 2024-01-09 | 昂策(佛山)电子有限公司 | Induction cooker resonance power control method and device and induction cooker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171213 Address after: 315825 Zhejiang Province, Ningbo city Beilun District Yongjiang Road No. 26 Patentee after: Ningbo De Ye converter technique incorporated company Address before: 315806 Hua Pu Road, Beilun District, Ningbo, Zhejiang Province, No. 18 Patentee before: NINGBO DEGUANG INTELLIGENT ELECTRONICS CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CP03 | Change of name, title or address |
Address after: 315806 Zhejiang city of Ningbo province Beilun Daqi Yongjiang Road No. 26 (Ningbo Deye Inverter Technology Co. Ltd.) Patentee after: Ningbo Deye Inverter Technology Co., Ltd. Address before: 315825 Zhejiang Province, Ningbo city Beilun District Yongjiang Road No. 26 Patentee before: Ningbo De Ye converter technique incorporated company |
|
| CP03 | Change of name, title or address |