CN201667634U - Speed controller of direct current motor - Google Patents
Speed controller of direct current motor Download PDFInfo
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- CN201667634U CN201667634U CN2010201177608U CN201020117760U CN201667634U CN 201667634 U CN201667634 U CN 201667634U CN 2010201177608 U CN2010201177608 U CN 2010201177608U CN 201020117760 U CN201020117760 U CN 201020117760U CN 201667634 U CN201667634 U CN 201667634U
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- direct current
- machine
- current motor
- motor
- actiyator
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Abstract
The utility model discloses a speed controller of a direct current motor, wherein an inductor is in serial connection between a switching tube of the speed controller of the direct current motor and the direct current motor. When a winding of the direct current motor is electrified to generate torque, the inductor is used for storing electric energy, and after the winding of the direct current motor is diselectrified, the inductor discharges electricity and continues to supply electricity to the direct current motor so as to ensure that the direct current motor maintains generating torque. Therefore, the torque of the direct current motor is enhanced without prolonging the breakover time on a switch for controlling the electrification of the direct current motor, thereby the utility model solves the problem that when the torque of the direct current motor is increased, the power loss of a power supply is increased.
Description
Technical field
The utility model relates to the dc motor technology field, more particularly, relates to a kind of DC machine actiyator.
Background technology
Direct current machine is as topmost electromechanical energy conversion device, and its range of application has spreaded all over the every field and the daily life of national economy.No matter be in industrial and agricultural production, communications and transportation, national defence, Aero-Space, health care in commercial affairs and the office equipment, still is at the household electrical appliance of daily life and consumption electronic product (as refrigerator, air-conditioning, DVD etc.) in, all using various DC motor in a large number.Motor and people's life is closely bound up, interwoveness.
What electric bicycle extensively adopted at present is direct current permanent magnet motor, direct current permanent magnet motor is according to whether adopting brush-commutated two kinds of brush motor and the brushless electric machines that are divided into, brush motor is the main product of direct current machine, and present most electric bicycle motors all are brushless electric machines.Brushless electric machine is a kind of special direct current machine, and the method that its adopts built-in sensors to add electronic commutator is carried out electronic commutation, and brushless electric machine mainly is in order to eliminate the wearing and tearing of brush, and the noise that produced of brush contact.
In the current electric era, the speed regulating control of direct current machine generally adopts simulation, uses many to the simple control of motor.Simple control is meant motor is started, braking, rotating control and sequential control.This class control can be passed through relay, and Programmable Logic Controller and switch element are realized.Also have class control to cry complicated control, be meant rotating speed of motor, corner, torque, voltage, electric current, physical quantitys such as power are controlled.
As shown in Figure 1, in the speed regulating control schematic diagram of dc brushless motor, switch transistor T 1, switch transistor T 3, switch transistor T 5 are formed upward bridge, and commutation is finished in conducting in turn; Switch transistor T 2, switch transistor T 4, switch transistor T 6 are formed bridge down, are driven by high frequency square wave; As shown in Figure 2, in the speed regulating control schematic diagram of brush direct current motor, finish commutation by the mechanical commutation device of motor M inside, same, switch transistor T is driven by high frequency square wave.
In Fig. 1 and Fig. 2, when the motor M winding obtained electric current and produces torque, circuit diagram can equivalence be a circuit diagram as shown in Figure 3, wherein, r is the common equivalent resistance that constitutes such as line loss, the internal resistance of cell, switching loss, motor iron loss, and the power of its consumption is idle work.
Concrete, the on/off of K switch as shown in Figure 4: wherein, t1 is a pulse duration, and t2 is pulse period T.
When K switch is closed (that is: at t1 in the time), motor windings gets electric, produces torque;
When K switch disconnects (that is: at t1 → t2 in the time), the motor windings dead electricity, no torque, motor only relies on inertia and rotates.
Obviously, if increase motor torque, the time of K switch closure will prolong (that is: t1 will increase), and the equivalent current of battery output also will increase, and simultaneously, equivalent resistance r goes up the power that consumes to be increased, and the increment of its increment and equivalent current square is directly proportional.This shows that the efficient of foregoing circuit is very low, also can cause described motor, battery and be connected the lead heating.
The utility model content
In view of this, the utility model provides a kind of DC machine actiyator, to solve when increasing the direct current machine torque, can increase the problem of power loss.
For achieving the above object, the utility model provides following technical scheme:
A kind of DC machine actiyator, series inductance between the switching tube of described DC machine actiyator and direct current machine.
Preferably, when described motor was dc brushless motor, described inductance one end was connected an end of described motor delta windings, and the other end of described inductance is connected between the switching tube of two series connection of described DC machine actiyator.
Preferably, described direct current machine is a brush direct current motor.
Preferably, also be parallel with electric capacity at the two ends of any one winding of described dc brushless motor winding.
Preferably, the shunt capacitance also at the two ends of described brush direct current motor.
Preferably, each switching tube two ends difference parallel diode of bridge on described dc brushless motor speed regulator.
Preferably, the two ends parallel diode after described brush direct current motor series inductance.
Preferably, bridge uses the power supply of two-way half-bridge rectification circuit on the dc brushless motor speed setting controller.
From above-mentioned technical scheme as can be seen, the disclosed DC machine actiyator of the utility model, between the switching tube of direct current machine and described DC machine actiyator, be connected inductance, when the winding of described direct current machine gets electric generation torque, described inductance store electrical energy, after the winding dead electricity of described direct current machine, described inductive discharge, continuation is to the winding power supply of described direct current machine, and the winding of keeping described direct current machine produces torque.Like this, increase the torque of described direct current machine, and do not needed to prolong the ON time that the described direct current machine of control gets electric switch, solved when increasing the direct current machine torque, can increase the problem of power loss.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the speed regulating control schematic diagram of a kind of dc brushless motor of the prior art;
Fig. 2 is the speed regulating control schematic diagram of a kind of brush direct current motor of the prior art;
Fig. 3 is the equivalent circuit diagram of DC machine actiyator circuit of the prior art;
Fig. 4 is the schematic diagram of DC machine actiyator operating time of the prior art;
Fig. 5 is the speed regulating control schematic diagram of the disclosed dc brushless motor of the utility model embodiment;
Fig. 6 is the speed regulating control schematic diagram of the disclosed brush direct current motor of the utility model embodiment;
Fig. 7 is the equivalent circuit diagram of the disclosed dc brushless motor speed setting controller of the utility model embodiment circuit;
Fig. 8 is in the disclosed dc brushless motor speed setting controller of the utility model embodiment circuit, the coordinate diagram of the size of current value in the on/off time of K switch and the circuit;
Fig. 9 is the equivalent circuit diagram of the disclosed brush direct current motor speed setting controller of the utility model embodiment circuit;
Figure 10 is in the disclosed brush direct current motor speed setting controller of the utility model embodiment circuit, the coordinate diagram of the size of current value in the on/off time of K switch and the circuit;
Figure 11 is the schematic diagram that the disclosed dc brushless motor of the utility model embodiment increases electric capacity;
Figure 12 is the schematic diagram that the disclosed brush direct current motor of the utility model embodiment increases electric capacity;
Figure 13 is the power control circuit figure of bridge on the disclosed dc brushless motor speed-regulating control device of the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment discloses a kind of DC machine actiyator, to solve when increasing the direct current machine torque, can increase the problem of power loss.
The disclosed DC machine actiyator of the utility model embodiment can be applied on the equipment of various use direct current machines, for example widely: electric bicycle, battery-operated motor cycle and electric automobile.
Between the switching tube of described DC machine actiyator and direct current machine, be connected inductance, when the winding of described direct current machine gets electric generation torque, described inductance store electrical energy, after the winding dead electricity of described direct current machine, described inductive discharge, continuation is to the winding power supply of described direct current machine, and the winding of keeping described direct current machine produces torque.Like this, increase the torque of described direct current machine, and do not needed to prolong the ON time that the described direct current machine of control gets electric switch.
Concrete, below discuss from dc brushless motor and brush direct current motor two aspects respectively by two embodiment.
As shown in Figure 5, the utility model embodiment discloses a kind of speed setting controller of dc brushless motor, switch transistor T 5 is connected the A ' point of direct current machine by inductance L a, equally, switch transistor T 1 is connected the C ' point of direct current machine by inductance L c, and switch transistor T 3 is connected the B ' point of direct current machine by inductance L b.Wherein, switch transistor T 1, switch transistor T 3 and switch transistor T 5 are formed bridge on the described dc brushless motor speed regulator, can be respectively at the two ends parallel diode of switch transistor T 1, switch transistor T 3 and switch transistor T 5, be specially: at switch transistor T 1 two ends parallel diode D1, at switch transistor T 3 two ends parallel diode D3, at switch transistor T 5 two ends parallel diode D5.And, in order to increase current load ability, can be at diode D1, diode D3 and diode D5 two ends difference a plurality of diodes in parallel.
When switch transistor T 5 conductings, when switch transistor T 2 provided pulse square wave to drive, foregoing circuit figure can equivalence be a circuit diagram as shown in Figure 7.Wherein, r is the equivalent resistance that line loss, the internal resistance of cell, switching loss, motor iron loss etc. constitute.Fig. 8 is the coordinate diagram of the size of current value in on/off time of K switch and the circuit, and wherein, t1 is a pulse duration, and t2 is pulse period T '.
With reference to Fig. 7 and Fig. 8, when K switch is closed (that is: at the t1 of Fig. 8 in the time), the winding A ' C ' of direct current machine electric, produce torque, current circuit is shown in the I1 among Fig. 7.Simultaneously, there is electric current to pass through on inductance L a and the inductance L c, the internal reservoir energy; When K switch disconnects (that is: at t1 → t2 of Fig. 8 in the time), the winding A ' C ' dead electricity of direct current machine, battery stops to circuit supply.At this moment, energy stored discharges by diode D1 among inductance L a and the inductance L c, to winding A ' C ' power supply, continues to keep the torque of winding A ' C ', and as the t1 → t ' among Fig. 8, current circuit is shown in the I2 among Fig. 7.
The time lengthening of the torque of the direct current machine winding A ' C ' of this moment is to t ', but, the ON time of K switch is t1 still, also we can say, when expecting that existing direct current machine winding produces the time of torque, because inductance L a and inductance L c energy storage effect, can shorten the ON time of K switch, like this, the equivalent current of power supply output reduces, accordingly, the power reduction of power supply output.
Another embodiment of the utility model discloses a kind of speed setting controller of brush direct current motor, as shown in Figure 6, and series inductance L between direct current machine M and switch transistor T, the two ends parallel diode D behind direct current machine M series inductance L.And, in order to increase current load ability, equally can be at a plurality of diodes of diode D two ends parallel connection.
Concrete, equivalent circuit diagram as shown in Figure 9, wherein, r is the equivalent resistance that line loss, the internal resistance of cell, switching loss, motor iron loss etc. constitute.Figure 10 is the coordinate diagram of the size of current value in on/off time of K switch and the circuit, and wherein, t1 is a pulse duration, and t2 is pulse period T '.
With reference to Fig. 9 and Figure 10, when K switch closure (that is: at the t1 of Figure 10 in the time), the winding L of direct current machine ' electric, produce torque.Simultaneously, there is electric current to pass through on the inductance L, the internal reservoir energy; When K switch disconnects (t1 of Figure 10 → t2 is in the time), the winding L of direct current machine ' dead electricity, battery stops to circuit supply.The torque that at this moment, energy stored discharges by diode D in the inductance L, to winding L ' power supply, continue to keep winding L ', as the t1 → t ' among Figure 10, current circuit is shown in the I among Fig. 9.
Through above-mentioned process, the power of power supply output reduces equally, and concrete reason is identical with the content of the explanation of the foregoing description, repeats no more herein.
To sum up, series inductance between the switching tube of described direct current machine and described DC machine actiyator, after battery runs down, can utilize the accumulation of energy function of inductance to continue power supply for direct current machine, make its winding continue to produce torque, like this, can reduce the power loss of power supply, improve the efficient of battery.And battery, direct current machine and the caloric value that is connected lead also can reduce, and have prolonged its useful life.
In order to improve the antijamming capability of described direct current machine, as shown in figure 11, can be parallel with electric capacity at the two ends of any one winding of described dc brushless motor winding; As shown in figure 12, can shunt capacitance at described brush direct current motor two ends.
Concrete, the size of described capacitance values can be selected according to the performance number of actual DC motor, and is general, uses the electric capacity of bigger numerical on the bigger direct current machine of power.
The utility model embodiment also discloses the power control circuit of bridge on a kind of dc brushless motor speed-regulating control device, as shown in figure 13, bridge adopts two-way half-bridge rectification circuit 101 to power on the described dc brushless motor speed-regulating control device, and two-way half-bridge rectification circuit 101 can be a direct voltage with the bootstrap voltage mode rectification.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be conspicuous concerning those skilled in the art, and defined herein General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments.Therefore, the utility model will can not be restricted to these embodiment shown in this article, but will meet and principle disclosed herein and features of novelty the wideest corresponding to scope.
Claims (8)
1. a DC machine actiyator is characterized in that, series inductance between the switching tube of described DC machine actiyator and direct current machine.
2. DC machine actiyator according to claim 1, it is characterized in that, when described motor is dc brushless motor, described inductance one end is connected an end of described motor delta windings, and the other end of described inductance is connected between the switching tube of two series connection of described DC machine actiyator.
3. DC machine actiyator according to claim 1 is characterized in that, described direct current machine is a brush direct current motor.
4. DC machine actiyator according to claim 2 is characterized in that, also is parallel with electric capacity at the two ends of any one winding of described dc brushless motor winding.
5. DC machine actiyator according to claim 3 is characterized in that, the shunt capacitance also at the two ends of described brush direct current motor.
6. DC machine actiyator according to claim 2 is characterized in that, each switching tube two ends difference parallel diode of bridge on described dc brushless motor speed regulator.
7. DC machine actiyator according to claim 3 is characterized in that, the two ends parallel diode after described brush direct current motor series inductance.
8. DC machine actiyator according to claim 2 is characterized in that, bridge adopts the power supply of two-way half-bridge rectification circuit on the dc brushless motor speed setting controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201177608U CN201667634U (en) | 2010-02-04 | 2010-02-04 | Speed controller of direct current motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201177608U CN201667634U (en) | 2010-02-04 | 2010-02-04 | Speed controller of direct current motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667634U true CN201667634U (en) | 2010-12-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201177608U Expired - Fee Related CN201667634U (en) | 2010-02-04 | 2010-02-04 | Speed controller of direct current motor |
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| CN (1) | CN201667634U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011095013A1 (en) * | 2010-02-04 | 2011-08-11 | Li Hongqi | Speed settting controller for dc motor |
-
2010
- 2010-02-04 CN CN2010201177608U patent/CN201667634U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011095013A1 (en) * | 2010-02-04 | 2011-08-11 | Li Hongqi | Speed settting controller for dc motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101208 Termination date: 20130204 |