CN202495847U - Adjustable speed direct current permanent magnet motor - Google Patents
Adjustable speed direct current permanent magnet motor Download PDFInfo
- Publication number
- CN202495847U CN202495847U CN2012200902628U CN201220090262U CN202495847U CN 202495847 U CN202495847 U CN 202495847U CN 2012200902628 U CN2012200902628 U CN 2012200902628U CN 201220090262 U CN201220090262 U CN 201220090262U CN 202495847 U CN202495847 U CN 202495847U
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- CN
- China
- Prior art keywords
- permanent magnet
- magnet motor
- direct current
- bidirectional thyristor
- adjustable speed
- 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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Abstract
The utility model discloses an adjustable speed direct current permanent magnet motor. The adjustable speed direct current permanent magnet motor comprises a direct current permanent magnet motor and a bridge rectifier, wherein a first output terminal of the bridge rectifier and a positive pole of the direct current permanent magnet motor are connected, a second output terminal of the bridge rectifier and a negative pole of the direct current permanent magnet motor are connected, a second input terminal of the bridge rectifier and an alternating current power supply are connected, the bridge rectifier further has a first input terminal which can connect with the alternating current power supply, the first input terminal is connected with a speed regulation circuit which can connect with the alternating current power supply, the speed regulation circuit comprises a bidirectional thyristor, a diode and a branch circuit which consists of a first capacitor and a potentiometer in series, the branch circuit is connected with the bidirectional thyristor in parallel, one end of the diode is connected between the first capacitor and the potentiometer, and the other end of the diode is connected with a control pole of the bidirectional thyristor. The adjustable speed direct current permanent magnet motor has a simple structure, can run at a plurality of speeds from low to high, and is applicable to a large market for use.
Description
Technical field
The utility model relates to a kind of adjustable speed dc permanent magnet motor, belongs to technical field of motors.
Background technology
At present; Dc permanent magnet motor uses as the auxiliary equipment of cleaning equipment etc.; Being mainly used in decide brush or limit brush such as floor-cleaning machine, road sweeper, polishing machine, floor grinding machine drives; Dc permanent magnet motor can use single-phase alternating current as power supply, and Chinese patent CN2681438Y just discloses a kind of permanent magnet direct current motor of Alternating Current Power Supply, and the major defect of the dc permanent magnet motor under the prior art is that motor can only have a kind of speed output under the constant situation of supply voltage.Just need when needing to use two kinds of different rotating speeds on the same complete machine with two dc permanent magnet motors if be used in, this just uses to the user and has brought inconvenience, is unfavorable for the expansion in market.Chinese patent CN1064773A discloses a kind of speed regulating device of direct current machine of Alternating Current Power Supply, the circuit more complicated of these speed regulating device, the use in incompatibility market.
Summary of the invention
The purpose of the utility model is the defective that overcomes prior art, provides a kind of simple in structure and can use low speed to arrive the adjustable speed dc permanent magnet motor of the multiple speed of high speed.
The technical scheme that realizes the utility model purpose is: a kind of adjustable speed dc permanent magnet motor; It comprises dc permanent magnet motor and bridge heap rectifier; First output of this bridge heap rectifier is connected with the positive pole of dc permanent magnet motor, and second output of bridge heap rectifier is connected with the negative pole of dc permanent magnet motor, and second input of bridge heap rectifier is connected with AC power; Bridge heap rectifier also has the first input end that can connect AC power; Described first input end also is connected with the alignment circuit that can connect AC power, and this alignment circuit comprises bidirectional thyristor, diode and the branch road that is composed in series by first electric capacity and potentiometer, and this branch road and bidirectional thyristor are connected in parallel; One end of diode is connected between first electric capacity and the potentiometer, and the other end is connected the control of bidirectional thyristor and extremely goes up.
Further, also be connected in parallel to the protective circuit of forming by the resistance and second capacitances in series on the described branch road.
After having adopted technique scheme, the first input end of the bridge of the utility model heap rectifier and the second input termination AC power form at a high speed; The same AC power of input termination of second input and alignment circuit forms low speed, and low speed can carry out speed governing through the resistance size that changes potentiometer R1; Whole circuit connects fairly simple, under second kind of situation, in each half period; When starting, bidirectional thyristor BT is in by state, and AC power flows through potentiometer R1 first capacitor C 1 is charged; When the charging voltage on first capacitor C 1 reaches the trigger voltage of diode VD, diode VD conducting, first capacitor C 1 is to the control utmost point discharge of bidirectional thyristor BT; Making bidirectional thyristor BT conducting has electric current to flow through bridge heap rectifier, after the heap rectifier rectification of passing a bridge, converts alternating current to direct current then; Give dc permanent magnet motor, the resistance size of regulator potentiometer R1, the i.e. charge constant of scalable first capacitor C 1; Thereby regulated the size of the angle of flow of bidirectional thyristor BT, thereby controlled the conducting situation of bidirectional thyristor BT, potentiometer R1 is big more; The angle of flow of bidirectional thyristor BT is also big more, and the direct voltage of dc permanent magnet motor is just more little, and rotating speed is just slow more.According to different height speed ratio example requirements, regulator potentiometer R1 can realize that all second capacitor C 2 can play the effect of protecting bidirectional thyristor BT with resistance R 2.
Description of drawings
Fig. 1 is the circuit diagram of the adjustable speed dc permanent magnet motor cross structure heap rectifier of the utility model.
Embodiment
For the content that makes the utility model is expressly understood more easily, below according to specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation,
As shown in Figure 1; A kind of adjustable speed dc permanent magnet motor, it comprises dc permanent magnet motor 5 and bridge heap rectifier M, first output 1 of this bridge heap rectifier M is connected with the positive pole of dc permanent magnet motor 5; Second output 2 of bridge heap rectifier M is connected with the negative pole of dc permanent magnet motor 5; Second input 3 of bridge heap rectifier M is connected with AC power, and bridge heap rectifier M also has the first input end 4 that can connect AC power, and described first input end 4 also is connected with the alignment circuit that can connect AC power; This alignment circuit comprises bidirectional thyristor BT, diode VD and the branch road that is composed in series by first capacitor C 1 and potentiometer R1; This branch road and bidirectional thyristor BT are connected in parallel, and the end of diode VD is connected between first capacitor C 1 and the potentiometer R1, and the other end is connected the control of bidirectional thyristor BT and extremely goes up.Also be connected in parallel to the protective circuit that is composed in series by the resistance R 2 and second capacitor C 2 on the described branch road.
The operation principle of the utility model is following:
The first input end 4 and second input 3 of the bridge heap rectifier M of the utility model connect AC power, form at a high speed, and the input 5 of second input 3 and alignment circuit connects same AC power; Form low speed, low speed can carry out speed governing through the resistance size that changes potentiometer R1, and whole circuit connects fairly simple; Under second kind of situation, in each half period, in the time of startup; Bidirectional thyristor BT is in by state, and AC power flows through potentiometer R1 first capacitor C 1 is charged, when the charging voltage on first capacitor C 1 reaches the trigger voltage of diode VD; Diode VD conducting, first capacitor C 1 be to the discharge of the control utmost point of bidirectional thyristor BT, makes bidirectional thyristor BT conducting; There is electric current to flow through bridge heap rectifier M, after the heap rectifier M rectification of passing a bridge, converts alternating current to direct current then, give dc permanent magnet motor; The resistance of regulator potentiometer R1 size, i.e. the charge constant of scalable first capacitor C 1, thereby the size of having regulated the angle of flow of bidirectional thyristor BT; Thereby controlled the conducting situation of bidirectional thyristor BT, potentiometer R1 is big more, and the angle of flow of bidirectional thyristor BT is also big more; The direct voltage of dc permanent magnet motor is just more little, and rotating speed is just slow more.According to different height speed ratio example requirements, regulator potentiometer R1 can realize that all second capacitor C 2 can play the effect of protecting bidirectional thyristor BT with resistance R 2.
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection range of the utility model.
Claims (2)
1. adjustable speed dc permanent magnet motor; It comprises dc permanent magnet motor (5) and bridge heap rectifier (M); First output (1) of this bridge heap rectifier (M) is connected with the positive pole of dc permanent magnet motor (5); Second output (2) of bridge heap rectifier (M) is connected with the negative pole of dc permanent magnet motor (5); Second input (3) of bridge heap rectifier (M) is connected with AC power, and bridge heap rectifier (M) also has the first input end (4) that can connect AC power, and it is characterized in that: described first input end (4) also is connected with the alignment circuit that can connect AC power; This alignment circuit comprises bidirectional thyristor (BT), diode (VD) and the branch road that is composed in series by first electric capacity (C1) and potentiometer (R1); This branch road and bidirectional thyristor (BT) are connected in parallel, and an end of diode (VD) is connected between first electric capacity (C1) and the potentiometer (R1), and the other end is connected the control of bidirectional thyristor (BT) and extremely goes up.
2. adjustable speed dc permanent magnet motor according to claim 1 is characterized in that: also be connected in parallel to the protective circuit that is composed in series by resistance (R2) and second electric capacity (C2) on the described branch road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200902628U CN202495847U (en) | 2012-03-12 | 2012-03-12 | Adjustable speed direct current permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200902628U CN202495847U (en) | 2012-03-12 | 2012-03-12 | Adjustable speed direct current permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202495847U true CN202495847U (en) | 2012-10-17 |
Family
ID=47002059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200902628U Expired - Fee Related CN202495847U (en) | 2012-03-12 | 2012-03-12 | Adjustable speed direct current permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202495847U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611250A (en) * | 2012-03-12 | 2012-07-25 | 常州天安尼康达电器有限公司 | Speed-adjustable direct-current permanent magnetic motor |
| CN104682793A (en) * | 2013-11-29 | 2015-06-03 | 西门子电气传动有限公司 | Control device for direct current series excitation motor and motor with control device |
-
2012
- 2012-03-12 CN CN2012200902628U patent/CN202495847U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102611250A (en) * | 2012-03-12 | 2012-07-25 | 常州天安尼康达电器有限公司 | Speed-adjustable direct-current permanent magnetic motor |
| CN104682793A (en) * | 2013-11-29 | 2015-06-03 | 西门子电气传动有限公司 | Control device for direct current series excitation motor and motor with control device |
| CN104682793B (en) * | 2013-11-29 | 2018-02-16 | 西门子电气传动有限公司 | Control device for direct current series-excited motor and the motor with the control device |
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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: 20121017 Termination date: 20170312 |