CN203166810U - Rapid energy-consumption braking circuit employing heat radiation fan - Google Patents
Rapid energy-consumption braking circuit employing heat radiation fan Download PDFInfo
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- CN203166810U CN203166810U CN 201320129887 CN201320129887U CN203166810U CN 203166810 U CN203166810 U CN 203166810U CN 201320129887 CN201320129887 CN 201320129887 CN 201320129887 U CN201320129887 U CN 201320129887U CN 203166810 U CN203166810 U CN 203166810U
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Abstract
The utility model provides a rapid energy-consumption braking circuit employing a heat radiation fan, which comprises an energy storage circuit, an energy consumption circuit and an inverter connected in order. The energy consumption circuit is a resistor and fan energy-consumption circuit, and comprises two metal-oxide-semiconductor field effect transistors (MOSFET), a first ac capacitor, a second electrolytic capacitor, three resistors, three diodes, a high-frequency transformer, a Zener diode and a dc heat radiation fan. The rapid energy-consumption braking circuit enables more rapid and frequent braking of a motor, is simple in structure and control, rapid in heat radiation and low in loss, is suitable for industrial sewing machines, numerical control machine tools and the like which are supplied by a frequency converter and require fast positioning, and has the advantages including novel structural design, strong versatility and low cost.
Description
Technical field
The utility model relates to a kind of fast braking technology of electric and electronic technical field, particularly, relates to a kind of quick energy-dissipating brake circuit that adopts radiator fan.
Background technology
The fast braking technology is the important component part of commercial Application technology.Fast development along with some industrial circle, waiting as industrial sewing machine (500W), the Digit Control Machine Tool (5.0kW is following) of single phase alternating current power supply power supply needs the converters of locating fast, for making that the requirement of the fast braking technology that motor quick and precisely stops is more and more higher.Therefore, rapid heat dissipation, energy consumption is little, and the simple fast braking circuit of control strategy meets the demand for development of fast braking technology, has a good application prospect.
The fast braking scheme has a variety of, relatively more commonly used is the dynamic braking scheme at present, in the DC loop of frequency converter power resistor being set connects with power switch, when braking, pass through the duty ratio of control power switch, make power resistor consume energy, the energy of feedback when shifting motor brake is implemented braking.This mode of braking is the power consumption mode, and the low-hanging fruit of braking still has some deficits.
Through the existing retrieval that is fit to the fast braking technology is found, article " the accurate positioning control design for scheme of a kind of brushless DC motor fast braking " (" industrial and mineral automation ", 2010 the 9th phases) describe in when the motor skidding, make the motor power short circuit, make to produce a rotating magnetic field opposite with the inertia direction of rotation in the motor, make the motor fast braking.This method control is complicated, cost is higher, and braking energy consumption is not suitable for the application scenario of frequent braking in motor interior.In original other dynamic braking mode, DC loop voltage can not be lower than the peak value of line voltage during braking, otherwise brake circuit needs the feedback energy while of releasing motor, also will discharge the energy from power supply, causes the not enough situation of the braking degree of depth.
Need to adopt new fast braking technology, so that simplified structure, simplification control, reduce cost and improve performance for this reason.
The utility model content
Because the above-mentioned defective of prior art, technical problem to be solved in the utility model provides a kind of quick energy-dissipating brake circuit that adopts radiator fan, can realize quick dynamic braking, has advantages such as simple in structure, that control is easy, with low cost.
For achieving the above object, the utility model provides a kind of quick energy-dissipating brake circuit that adopts radiator fan, comprises the accumulator that connects successively, energy consumption circuit and inverter; Described energy consumption circuit is resistance capacitance energy consumption circuit, comprise two MOSFET, first ac capacitor, second electrochemical capacitor, three resistance, three diodes, a high frequency transformer, a voltage stabilizing didoe and a direct current radiator fan, wherein: the drain electrode of a MOSFET links to each other with the input of DC power supply is anodal, and its source electrode links to each other with Section Point; Described first resistance is in parallel with first diode, and two ends connect Section Point and the 3rd node respectively; Two ends, the former limit of described high frequency transformer connect the 3rd node and the 7th node respectively; Described first ac capacitor is in parallel with second resistance, and two ends connect the 3rd node and the 4th node; Described second diode is connected with described second resistance, and second diode cathode connects the 4th node, and anode connects the 7th node; Described high frequency transformer secondary different name end is connected with described the 3rd diode, and negative electrode connects the 5th node; Described second electrochemical capacitor, the 3rd resistance, voltage stabilizing didoe are in parallel with the direct current radiator fan, and two ends connect the 5th node and the 6th node respectively; The drain electrode of the 2nd MOSFET links to each other with the 7th node, and source electrode links to each other with the 8th node; Wherein, described Section Point is the source electrode of a described MOSFET and the tie point of described first resistance, described the 3rd node is the tie point of described first resistance and the former limit of described high frequency transformer end of the same name, described the 4th node is the tie point of described second resistance and described second diode cathode, described the 5th node is the tie point of described the 3rd diode cathode and the described second electrochemical capacitor anode, described the 6th node is described high frequency transformer secondary end of the same name, described the 7th node is the tie point of described second diode and described the 2nd MOSFET, and described the 8th node is the input negative pole of described DC power supply.
Compared with prior art, the utlity model has following beneficial effect:
The utility model device utilizes that power resistor directly consumes energy, the means of high frequency transformer dump energy, DC fan heat radiation power consumption can: (1) realizes power resistor power consumption under the big space rate, can be implemented in the 2nd MOSFET blocking interval continues by high frequency transformer dump energy, DC fan heat radiation power consumption, therefore can obtain big space rate power consumption and fast braking more fast, the part braking energy can also be used to auxiliary heat dissipation; (2) resistance of power resistor can reduce or cancel the use power resistor, is dispelled the heat by DC fan fully; (3) when braking, a MOSFET keeps off state, and the energy of accumulator can not replenish to the power consumption circuit.If the energy of accumulator is too high, conversely, the power consumption circuit can also be with energy feedback accumulator.The terminal voltage of energy consumption circuit can be lower than accumulator, and the energy consumption circuit can be realized deep discharge and more repid discharge.The utility model circuit structure is simple, control is easy, fail safe good, meets the fast braking requirement, and has project organization novelty, highly versatile, advantage such as with low cost.
Description of drawings
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present utility model will become:
Fig. 1 is a kind of quick energy-dissipating brake circuit schematic diagram that adopts radiator fan of the present utility model.
Embodiment
Below in conjunction with specific embodiment the utility model is elaborated.Following examples will help those skilled in the art further to understand the utility model, but not limit the utility model in any form.Should be pointed out that to those skilled in the art, under the prerequisite that does not break away from the utility model design, can also make some modification and improvement.These all belong to protection range of the present utility model.
As shown in Figure 1, a kind of quick energy-dissipating brake circuit comprises accumulator, energy consumption circuit and inverter 3, and wherein, accumulator is in parallel with the energy consumption circuit, and the input of circuit links to each other with the output of DC power supply, and output links to each other with the input of inverter 3.Inverter 3 drives motor work, when needing emergency shutdown, is consumed the energy storage of shifting motor fast or is added geopotential energy by the energy consumption circuit.In the energy consumption circuit, the direct power consumption of resistance, high frequency transformer stores magnetic energy, the DC fan consumed energy, accumulator does not influence the power consumption circuit during braking, realizes quick dynamic braking.
Its each several part particular circuit configurations is described in detail in detail below.
In the present embodiment, accumulator 1 is big capacitance energy storage, comprises the first electrochemical capacitor E1, and the described first electrochemical capacitor positive pole links to each other with the anodal P1 of the input of DC power supply, and its negative pole links to each other with the input negative pole N1 of DC power supply;
In the present embodiment, energy consumption circuit 2 is resistance energy consumption, DC fan power consumption circuit, comprise two MOSFET S1 and S2, two capacitor C 1 and E2, three resistance R 1～R3, three diode D1～D3, high frequency transformer T1, a voltage stabilizing didoe ZD1 and a direct current radiator fan F1, wherein, the drain electrode of a described MOSFET S1 links to each other with the anodal P1 of the input of DC power supply, and its source electrode links to each other with described Section Point O2; Described first resistance R 1 is in parallel with the first diode D1, and two ends connect Section Point O2 and the 3rd node O3 respectively; Two ends, the former limit of described high frequency transformer T1 connect the 3rd node O3 and the 7th node O7 respectively; The described first ac capacitor C1 is in parallel with second resistance R 2, and two ends connect the 3rd node O3 and the 4th node O4; The described second diode D2 connects with second resistance R 2, and the second diode D2 negative electrode connects the 4th node O4, and anode connects the 7th node O7; Described high frequency transformer T1 secondary different name end is connected with described the 3rd diode D3, and negative electrode connects the 5th node O5; The described second electrochemical capacitor E2, the 3rd resistance R 3, voltage stabilizing didoe ZD1 are in parallel with direct current radiator fan F1, and two ends connect the 5th node O5 and the 6th node O6 respectively; The drain electrode of the 2nd MOSFET S2 links to each other with the 7th node O7, and source electrode links to each other with the 8th node O8;
First node O1 is the anodal P1 of the input of described DC power supply, the source electrode that described Section Point O2 is a described MOSFET S1 and the tie point of described first resistance R 1, described the 3rd node O3 is the tie point of described first resistance R 1 and the former limit of described high frequency transformer T1 end of the same name, described the 4th node O4 is the tie point of described second resistance R 2 and the described second diode D2 negative electrode, described the 5th node O5 is the tie point of described the 3rd diode D3 negative electrode and the described second electrochemical capacitor E2, described the 6th node O6 is described high frequency transformer T1 secondary end of the same name, described the 7th node O7 is the tie point of the described second diode D2 and described the 2nd MOSFET S2, the input negative pole N1 that described the 8th node O8 is described DC power supply;
In the present embodiment, described inverter 3 is the voltage source inverter of corresponding power grade.
In the present embodiment, accumulator is storage battery or the big electric capacity that comprises a plurality of access interface.
Particularly, in the present embodiment, the parameter of each device that adopts is as follows:
The capacitance of first ac capacitor is 2 μ F, and withstand voltage is 600V, and the capacitance of first electrochemical capacitor is 680 μ F, and withstand voltage is 400V, and the capacitance of second electrochemical capacitor is 470 μ F, and withstand voltage is 100V.
The resistance value of first resistance is 33 Ω, and power is 10W; The resistance value of second resistance is 15 Ω, and power is 2W; The resistance value of the 3rd resistance is 10k Ω, and power is 1.0W.
The parameter of two MOSFET is 25A/100 ° of C of anti-stream, and withstand voltage is 500V.
The model of three diodes is 1N4148.
The high frequency transformer no-load voltage ratio is 100:10, and power is 20W.
Voltage stabilizing didoe is voltage stabilizing 24V, and power is 2W.
In concrete the use, the gate pole of described two MOSFET S1, S2 is accepted the pwm pulse control signal, and during a MOSFET S1 on-state, the 2nd MOSFET S2 turn-offs, and inverter 3 normally moves, and drives motor work; During the one MOSFET S1 off-state, the 2nd MOSFET S2 adopts certain duty ratio PWM to carry out copped wave, during conducting, sets up electric current by power first resistance R 1, the former limit of high frequency transformer T1, high frequency transformer T1 stores magnetic energy, and 1 power consumption of first resistance R realizes fast braking.When the 2nd MOSFET S2 turn-offed, high frequency transformer T2 secondary induced voltage was second electrochemical capacitor E2 charging by the 3rd diode D3, was DC fan F1 power supply simultaneously, and DC fan F1 operation and power consumption are the heat radiation of heater elements such as power device.The 3rd resistance R 3 is dummy resistance.Voltage stabilizing didoe ZD1 plays the pressure limiting effect, prevents that DC fan F1 overvoltage from burning.Clamping action and magnetic circuit reset response that second resistance R 2, the first ac capacitor C1 and the former limit of second diode D2 start-up restriction high frequency transformer T1 induced voltage are too high.
By the way, the utility model has operate as normal, two kinds of working methods of fast braking.
The utility model adopts the dynamic braking mode that motor is stopped fast, its circuit structure is simple, control is easy, rapid heat dissipation, loss are little, be applicable to that industrial sewing machine (500W), Digit Control Machine Tool (5.0kW) etc. need the frequency converter application scenario of location fast, and have project organization novelty, highly versatile, advantage such as with low cost.
More than specific embodiment of the utility model is described.It will be appreciated that the utility model is not limited to above-mentioned specific implementations, those skilled in the art can make various distortion or modification within the scope of the claims, and this does not influence flesh and blood of the present utility model.
Claims (9)
1. a quick energy-dissipating brake circuit that adopts radiator fan is characterized in that, comprises the accumulator that connects successively, energy consumption circuit and inverter; Described energy consumption circuit is resistance capacitance energy consumption circuit, comprise two MOSFET, first ac capacitor, second electrochemical capacitor, three resistance, three diodes, a high frequency transformer, a voltage stabilizing didoe and a direct current radiator fan, wherein: the drain electrode of a MOSFET links to each other with the input of DC power supply is anodal, and its source electrode links to each other with Section Point; Described first resistance is in parallel with first diode, and two ends connect Section Point and the 3rd node respectively; Two ends, the former limit of described high frequency transformer connect the 3rd node and the 7th node respectively; Described first ac capacitor is in parallel with second resistance, and two ends connect the 3rd node and the 4th node; Described second diode is connected with described second resistance, and second diode cathode connects the 4th node, and anode connects the 7th node; Described high frequency transformer secondary different name end is connected with described the 3rd diode, and negative electrode connects the 5th node; Described second electrochemical capacitor, the 3rd resistance, voltage stabilizing didoe are in parallel with the direct current radiator fan, and two ends connect the 5th node and the 6th node respectively; The drain electrode of the 2nd MOSFET links to each other with the 7th node, and source electrode links to each other with the 8th node; Wherein, described Section Point is the source electrode of a described MOSFET and the tie point of described first resistance, described the 3rd node is the tie point of described first resistance and the former limit of described high frequency transformer end of the same name, described the 4th node is the tie point of described second resistance and described second diode cathode, described the 5th node is the tie point of described the 3rd diode cathode and the described second electrochemical capacitor anode, described the 6th node is described high frequency transformer secondary end of the same name, described the 7th node is the tie point of described second diode and described the 2nd MOSFET, and described the 8th node is the input negative pole of described DC power supply.
2. a kind of quick energy-dissipating brake circuit that adopts radiator fan according to claim 1, it is characterized in that, described accumulator is big capacitance energy storage, comprise first electrochemical capacitor, the described first electrochemical capacitor positive pole links to each other with the input of DC power supply is anodal, and its negative pole links to each other with the input negative pole of DC power supply.
3. a kind of quick energy-dissipating brake circuit that adopts radiator fan according to claim 2, it is characterized in that, the capacitance of described first ac capacitor is 2 μ F, withstand voltage is 600V, the capacitance of first electrochemical capacitor is 680 μ F, withstand voltage is 400V, and the capacitance of second electrochemical capacitor is 470 μ F, and withstand voltage is 100V.
4. according to each described a kind of quick energy-dissipating brake circuit that adopts radiator fan of claim 1-3, it is characterized in that the resistance value of described first resistance is 33 Ω, power is 10W; The resistance value of second resistance is 15 Ω, and power is 2W; The resistance value of the 3rd resistance is 10k Ω, and power is 1.0W.
5. according to each described a kind of quick energy-dissipating brake circuit that adopts radiator fan of claim 1-3, it is characterized in that the parameter of described two MOSFET is 25A/100 ° of C of anti-stream, withstand voltage is 500V.
6. according to each described a kind of quick energy-dissipating brake circuit that adopts radiator fan of claim 1-3, it is characterized in that the model of described three diodes is 1N4148.
7. according to each described a kind of quick energy-dissipating brake circuit that adopts radiator fan of claim 1-3, it is characterized in that described high frequency transformer no-load voltage ratio is 100:10, power is 20W.
8. according to each described a kind of quick energy-dissipating brake circuit that adopts radiator fan of claim 1-3, it is characterized in that described voltage stabilizing didoe is voltage stabilizing 24V, power is 2W.
9. a kind of quick energy-dissipating brake circuit that adopts radiator fan according to claim 1 is characterized in that described inverter is the voltage source inverter of corresponding power grade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320129887 CN203166810U (en) | 2013-03-20 | 2013-03-20 | Rapid energy-consumption braking circuit employing heat radiation fan |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320129887 CN203166810U (en) | 2013-03-20 | 2013-03-20 | Rapid energy-consumption braking circuit employing heat radiation fan |
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| Publication Number | Publication Date |
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| CN203166810U true CN203166810U (en) | 2013-08-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320129887 Expired - Fee Related CN203166810U (en) | 2013-03-20 | 2013-03-20 | Rapid energy-consumption braking circuit employing heat radiation fan |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199770A (en) * | 2013-03-20 | 2013-07-10 | 上海交通大学 | Electromotor braking device |
| CN106564487A (en) * | 2015-10-10 | 2017-04-19 | 南京华士电子科技有限公司 | Auxiliary brake mode generator for motor train unit |
| TWI753499B (en) * | 2020-07-21 | 2022-01-21 | 大陸商奇宏電子（深圳）有限公司 | Fan brake circuit |
| US11303230B2 (en) | 2020-08-26 | 2022-04-12 | Asia Vital Components (Shen Zhen) Co., Ltd. | Fan brake circuit |
-
2013
- 2013-03-20 CN CN 201320129887 patent/CN203166810U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199770A (en) * | 2013-03-20 | 2013-07-10 | 上海交通大学 | Electromotor braking device |
| CN103199770B (en) * | 2013-03-20 | 2015-05-20 | 上海交通大学 | Electromotor braking device |
| CN106564487A (en) * | 2015-10-10 | 2017-04-19 | 南京华士电子科技有限公司 | Auxiliary brake mode generator for motor train unit |
| TWI753499B (en) * | 2020-07-21 | 2022-01-21 | 大陸商奇宏電子（深圳）有限公司 | Fan brake circuit |
| US11303230B2 (en) | 2020-08-26 | 2022-04-12 | Asia Vital Components (Shen Zhen) Co., Ltd. | Fan brake circuit |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20140320 |