CN203660929U - Electromotor starting device and electromotor - Google Patents
Electromotor starting device and electromotor Download PDFInfo
- Publication number
- CN203660929U CN203660929U CN201320850943.4U CN201320850943U CN203660929U CN 203660929 U CN203660929 U CN 203660929U CN 201320850943 U CN201320850943 U CN 201320850943U CN 203660929 U CN203660929 U CN 203660929U
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Abstract
The utility model provides an electromotor starting device and an electromotor. The electromotor starting device comprises a signal generating unit for generating a staring signal having a predetermined period, a signal output unit which is connected to a control end of the electromotor and used to output the starting signal to the electromotor, a detection unit for detecting a rotating speed signal of the electromotor in a real-time manner, and a determination unit; each period of the starting signal comprises a pulse width modulation signal of a first duration and a stop signal of a second duration, and the duty ratio of the pulse width modulation signal increases along with an input duration of the starting signal; and the determination unit is used to determine the duty ratio of the pulse width modulation signal and/or a rotating speed of the electromotor, and, when the duty ratio is 1 and/or the rotating speed of the electromotor achieves a predetermined target value, the determination unit is used to determine that starting of the electromotor is completed. Through the technical scheme, larger noises are prevented from generating when the electromotor is started, and the electromotor is prevented from entering into a blocking protection function to cause a starting failure of the electromotor when the electromotor is started.
Description
Technical field
The utility model relates to motor technology field, in particular to a kind of motor starter and a kind of motor.
Background technology
In correlation technique, for the startup of DC motor, conventionally there are two kinds of modes, first kind of way is to adopt the mode directly starting, but the startup noise of motor is larger; The second way is to adopt the progressively mode of speed-adjusting start; but in the time that the load torque of motor is larger, in the time of low speed, can not start, cause the stall that is greater than motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, cause electric motor starting failure.
Therefore, produce larger noise while how avoiding motor start-up, while avoiding motor start-up, enter rotation-clogging protection becomes technical problem urgently to be resolved hurrily simultaneously.
Utility model content
The utility model is intended at least solve one of technical problem existing in prior art or correlation technique.
For this reason, an object of the present utility model has been to propose a kind of larger noise that produces can avoid motor start-up time, enters the motor starter of rotation-clogging protection while avoiding motor start-up simultaneously.
Another object of the present utility model is to have proposed a kind of motor.
For achieving the above object, according to the embodiment of first aspect of the present utility model, a kind of motor starter has been proposed, comprise: signal generating unit, for generation of the enabling signal of predetermined period, wherein, the enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal; Signal output unit, is connected to the control end of motor, exports described motor to for the described enabling signal that described signal generating unit is produced; Detecting unit, for detecting in real time the tach signal of described motor; Identifying unit, for judging the duty ratio of described pulse-width signal and/or the rotating speed of described motor, when described duty ratio is 1 and/or the rotating speed of described motor while reaching predetermined target value, determines that described motor start-up completes.
According to the motor starter of the utility model embodiment, by the enabling signal to motor input predetermined period, and the enabling signal in each cycle comprises pulse-width signal, and the duty ratio of pulse-width signal is increased progressively, make progressively acceleration startup of motor, avoid directly starting the noise that generation is larger.
Comprise stop signal by the enabling signal in each cycle, can make motor can adopt the mode of intermittently segmentation progressively to start, avoid in the time of the starting torque deficiency of motor, continue to motor input pulse-width signal, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
In addition, according to the motor starter of the utility model above-described embodiment, can also there is following additional technical characterictic:
According to an embodiment of the present utility model, described the first duration is less than the stall of described motor and judges the time.
According to the motor starter of the utility model embodiment; the stall that is less than motor by making to input the first duration of pulse-width signal is judged the time; can avoid in the time of the starting torque deficiency of motor; continue to motor input pulse-width signal; cause the stall that has exceeded motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, and then cause motor start-up failure.
According to an embodiment of the present utility model, described signal generating unit is specifically for the described predetermined period of every process, and the duty ratio of the described pulse-width signal of generation increases predetermined value.
According to the motor starter of the utility model embodiment, the every predetermined value increasing through predetermined period of duty ratio of pulse-width signal can arrange according to user's demand, if user needs motor to start fast, can be set to larger numerical value by this predetermined value, such as 40%(can certainly be other numerical value, such as 25%, 30% etc.), thus actuating motor fast.If user needs slow start motor, can be set to less numerical value by this predetermined value, such as 1%, 2% etc.
According to an embodiment of the present utility model, described predetermined period equals described the first duration and described the second duration sum, and described the first duration is more than or equal to described the second duration.
According to the motor starter of the utility model embodiment, by making the input duration of pulse-width signal be more than or equal to the input duration of stop signal, can guarantee that motor can progressively start, avoid the input duration of stop signal excessive, cause motor stopping inputting after pulse-width signal, motor enters again halted state in the input duration of stop signal, causes motor not start.
According to an embodiment of the present utility model, the initial duty cycle of described pulse-width signal is 10% to 50%.
According to an embodiment of the present utility model, described signal generating unit also for: after described identifying unit determines that described motor start-up completes, produce continuous driving signal; Described signal output unit also for: export described driving signal to described motor, to drive described motor work.
According to the motor starter of the utility model embodiment, after motor start-up, continue to carry out work in order to ensure motor, can input continuous driving signal to motor.
According to the embodiment of the utility model second aspect, also propose a kind of motor, having comprised: control end, has been connected to the motor starter described in above-mentioned arbitrary embodiment, the enabling signal sending for receiving described motor starter, so that described motor starts.
Wherein, signal generating unit can be by signal generator and IGBT(Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) composition, signal generator produces the pulse-width signal of predetermined period, and is controlled and produced stop signal by IGBT.
After motor start-up completes, signal generator can produce continuous drive motor and carry out work.
Signal output unit can be holding wire, for example coaxial cable.
Detecting unit and identifying unit can be single-chip microcomputers, and real-time rotate speed is fed back to single-chip microcomputer by motor.Pulse signal generator and IGBT driver are all connected to single-chip microcomputer, the output duration by single-chip microcomputer to pulse-width signal, the duration of stop signal, and the recruitment of duty ratio is controlled.And judge according to the duty ratio of the real-time rotate speed of motor and/or pulse-width signal whether motor has started by single-chip microcomputer.
Additional aspect of the present utility model and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present utility model.
Brief description of the drawings
Above-mentioned and/or additional aspect of the present utility model and advantage accompanying drawing below combination is understood becoming the description of embodiment obviously and easily, wherein:
Fig. 1 shows according to the schematic block diagram of the motor starter of embodiment of the present utility model;
Fig. 2 shows the syndeton schematic diagram according to the motor starter of embodiment of the present utility model and motor;
Fig. 3 shows according to the waveform schematic diagram of the motor start-up signal of embodiment of the present utility model.
Embodiment
In order more clearly to understand above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the drawings and specific embodiments, the utility model is further described in detail.It should be noted that, in the situation that not conflicting, the feature in the application's embodiment and embodiment can combine mutually.
A lot of details are set forth in the following description so that fully understand the utility model; but; the utility model can also adopt other to be different from other modes described here and implement, and therefore, protection range of the present utility model is not subject to the restriction of following public specific embodiment.
Fig. 1 shows according to the schematic block diagram of the motor starter of embodiment of the present utility model.
As shown in Figure 1, according to the motor starter 100 of embodiment of the present utility model, comprise: signal generating unit 102, for generation of the enabling signal of predetermined period, wherein, the enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal; Signal output unit 104, is connected to the control end of motor, exports described motor to for the described enabling signal that described signal generating unit 102 is produced; Detecting unit 106, for detecting in real time the tach signal of described motor; Identifying unit 108, for judging the duty ratio of described pulse-width signal and/or the rotating speed of described motor, when described duty ratio is 1 and/or the rotating speed of described motor while reaching predetermined target value, determines that described motor start-up completes.
By the enabling signal to motor input predetermined period, and the enabling signal in each cycle comprises pulse-width signal, and the duty ratio of pulse-width signal is increased progressively, and make progressively acceleration startup of motor, avoid directly starting the noise that generation is larger.
Comprise stop signal by the enabling signal in each cycle, can make motor can adopt the mode of intermittently segmentation progressively to start, avoid in the time of the starting torque deficiency of motor, continue to motor input pulse-width signal, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
In addition, according to the motor starter 100 of the utility model above-described embodiment, can also there is following additional technical characterictic:
According to an embodiment of the present utility model, described the first duration is less than the stall of described motor and judges the time.
The stall that is less than motor by making to input the first duration of pulse-width signal is judged the time; can avoid in the time of the starting torque deficiency of motor; continue to motor input pulse-width signal; cause the stall that has exceeded motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, and then cause motor start-up failure.
According to an embodiment of the present utility model, described signal generating unit 102 is specifically for the described predetermined period of every process, and the duty ratio of the described pulse-width signal of generation increases predetermined value.
The every predetermined value increasing through predetermined period of duty ratio of pulse-width signal can arrange according to user's demand, if user needs motor to start fast, can be set to larger numerical value by this predetermined value, such as 40%(can certainly be other numerical value, such as 25%, 30% etc.), thus actuating motor fast.If user needs slow start motor, can be set to less numerical value by this predetermined value, such as 1%, 2% etc.
According to an embodiment of the present utility model, described predetermined period equals described the first duration and described the second duration sum, and described the first duration is more than or equal to described the second duration.
By making the input duration of pulse-width signal be more than or equal to the input duration of stop signal, can guarantee that motor can progressively start, avoid the input duration of stop signal excessive, cause motor stopping inputting after pulse-width signal, motor enters again halted state in the input duration of stop signal, causes motor not start.
According to an embodiment of the present utility model, the initial duty cycle of described pulse-width signal is 10% to 50%.
According to an embodiment of the present utility model, described signal generating unit 102 also for: after described identifying unit 108 determines that described motor start-up completes, produce continuous driving signal; Described signal output unit 104 also for: export described driving signal to described motor, to drive described motor work.
After motor start-up, continue to carry out work in order to ensure motor, can input continuous driving signal to motor.
Fig. 2 shows the syndeton schematic diagram according to the motor starter of embodiment of the present utility model and motor.
As shown in Figure 2, the power end (positive power source terminal 2026 and negative power end 2028) of motor 202 is connected to respectively power end VCC and earth terminal in motor starter 204, motor starter 204 sends enabling signal to the control end 2024 of motor 202, with actuating motor 202.Wherein, motor starter 204 comprises single-chip microcomputer.
Motor 202 is sent to motor starter 204 by feedback signal output 2022 by the rotary speed information of motor 202, so that motor starter 204 judges according to the rotating speed of motor 202 whether motor 202 has started.
Fig. 3 shows according to the waveform schematic diagram of the motor start-up signal of embodiment of the present utility model.
As shown in Figure 3, the enabling signal 302 of one-period T comprises t
1the pulse-width signal of time and t
2the stop signal of time, and the duty ratio of pulse-width signal is every through one-period T increase predetermined value, makes progressively acceleration startup of motor, avoids directly starting producing larger noise.Simultaneously, can make motor can adopt the mode of intermittently segmentation progressively to start, avoid, in the time of the starting torque deficiency of motor, continuing to motor input pulse-width signal, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
Detecting that duty ratio is 1 and/or the rotating speed of motor while reaching predetermined target value, determine that motor start-up completes, export continual and steady driving signal 304, drive motor carries out work.
More than be described with reference to the accompanying drawings the technical solution of the utility model, considered in correlation technique, conventionally had two kinds of mode actuating motors, first kind of way is to adopt the mode directly starting, but the startup noise of motor is larger; The second way is to adopt the progressively mode of speed-adjusting start; but in the time that the load torque of motor is larger, in the time of low speed, can not start, cause the stall that is greater than motor start-up time of motor to judge the time; make motor enter rotation-clogging protection, cause electric motor starting failure.Therefore, the utility model proposes a kind of new motor starter, can make motor progressively accelerate to start, avoid directly starting and produce larger noise, meanwhile, avoid, in the time of the starting torque deficiency of motor, continuing to motor input pulse-width signal, cause the stall that is greater than motor start-up time of motor to judge the time, cause motor start-up failure.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (7)
1. a motor starter, is characterized in that, comprising:
Signal generating unit, for generation of the enabling signal of predetermined period, wherein, the enabling signal in each cycle comprises the stop signal of pulse-width signal and second duration of the first duration, and the duty ratio of described pulse-width signal increases progressively with the input duration of described enabling signal;
Signal output unit, is connected to the control end of motor, exports described motor to for the described enabling signal that described signal generating unit is produced;
Detecting unit, for detecting in real time the tach signal of described motor;
Identifying unit, for judging the duty ratio of described pulse-width signal and/or the rotating speed of described motor, when described duty ratio is 1 and/or the rotating speed of described motor while reaching predetermined target value, determines that described motor start-up completes.
2. motor starter according to claim 1, is characterized in that, described the first duration is less than the stall of described motor and judges the time.
3. motor starter according to claim 1, is characterized in that, described signal generating unit specifically for:
The described predetermined period of every process, the duty ratio of the described pulse-width signal of generation increases predetermined value.
4. motor starter according to claim 1, is characterized in that, described predetermined period equals described the first duration and described the second duration sum, and described the first duration is more than or equal to described the second duration.
5. motor starter according to claim 1, is characterized in that, the initial duty cycle of described pulse-width signal is 10% to 50%.
6. according to the motor starter described in any one in claim 1 to 5, it is characterized in that, described signal generating unit also for: after described identifying unit determines that described motor start-up completes, produce continuous driving signal;
Described signal output unit also for: export described driving signal to described motor, to drive described motor work.
7. a motor, is characterized in that, comprising:
Control end, is connected to the motor starter described in any one in claim 1 to 6, and the enabling signal sending for receiving described motor starter, so that described motor starts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850943.4U CN203660929U (en) | 2013-12-19 | 2013-12-19 | Electromotor starting device and electromotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320850943.4U CN203660929U (en) | 2013-12-19 | 2013-12-19 | Electromotor starting device and electromotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203660929U true CN203660929U (en) | 2014-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320850943.4U Withdrawn - After Issue CN203660929U (en) | 2013-12-19 | 2013-12-19 | Electromotor starting device and electromotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203660929U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715946A (en) * | 2013-12-19 | 2014-04-09 | 佛山市顺德区美的电热电器制造有限公司 | Motor starting method, motor starting device and motor |
| CN106541372A (en) * | 2015-09-21 | 2017-03-29 | 南京德朔实业有限公司 | Electric tool and its method using travel switch controlled motor rotating speed |
| CN107148740A (en) * | 2014-12-08 | 2017-09-08 | 三菱重工制冷空调***株式会社 | Fan motor system, air conditioner, fan motor control method and program |
-
2013
- 2013-12-19 CN CN201320850943.4U patent/CN203660929U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103715946A (en) * | 2013-12-19 | 2014-04-09 | 佛山市顺德区美的电热电器制造有限公司 | Motor starting method, motor starting device and motor |
| CN103715946B (en) * | 2013-12-19 | 2016-09-07 | 佛山市顺德区美的电热电器制造有限公司 | Motor start-up method, motor starter and motor |
| CN107148740A (en) * | 2014-12-08 | 2017-09-08 | 三菱重工制冷空调***株式会社 | Fan motor system, air conditioner, fan motor control method and program |
| CN107148740B (en) * | 2014-12-08 | 2019-06-28 | 三菱重工制冷空调***株式会社 | Fan motor system, air conditioner, fan motor control method and recording medium |
| CN106541372A (en) * | 2015-09-21 | 2017-03-29 | 南京德朔实业有限公司 | Electric tool and its method using travel switch controlled motor rotating speed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140618 Effective date of abandoning: 20160907 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |