CN106711927A - Power rectifying system for servo driver - Google Patents
Power rectifying system for servo driver Download PDFInfo
- Publication number
- CN106711927A CN106711927A CN201710016824.1A CN201710016824A CN106711927A CN 106711927 A CN106711927 A CN 106711927A CN 201710016824 A CN201710016824 A CN 201710016824A CN 106711927 A CN106711927 A CN 106711927A
- Authority
- CN
- China
- Prior art keywords
- power
- rectifier system
- current
- surge
- power rectifier
- 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.)
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/08—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a power rectifying system for a servo controller. The power rectifying system comprises a circuit breaker, a surge protector, an input reactor and an alternating-current rectifying unit which are connected in sequence, wherein the circuit breaker is used for disconnecting a power supply grid and the power rectifying system when input current is overlarge; the surge protector is used for connecting the power rectifying system into an equipotential system when surge is generated instantaneously, limiting the voltage and protecting the power rectifying system; the input reactor is used for reducing current harmonics, limiting the influence of impact current generated by abnormal fluctuation of the grid voltage on the power rectifying system and a servo-motor driver at the rear end and suppressing the surge. According to the power rectifying system disclosed by the invention, the servo driver can be well protected, and especially the equipment can be protected from impact of stronger lightning surge and can be prevented from being burnt out.
Description
Technical field
The present invention relates to AC rectification field, more particularly to a kind of power rectifier system for servo controller.
Background technology
In order that the input current of grid side can be used in servo controller, it is necessary to carry out rectification filter to power network input current
Ripple, but existing rectification circuit cannot well protect servo-driver, especially when impact is gushed in face of stronger thunder and lightning,
The risk for burning out equipment is larger.
The content of the invention
The invention reside in the above-mentioned deficiency for overcoming prior art, there is provided one kind can be good at protection servo-driver, outstanding
Its protection equipment is not gushed the power rectifier system for servo controller of impact by stronger thunder and lightning.
In order to realize foregoing invention purpose, the technical solution adopted by the present invention is：
A kind of power rectifier system for servo controller, including breaker, surge protector, the input reactance being sequentially connected
Device, AC rectification unit；The breaker is used to be disconnected when input current is excessive the company of power supply grid and power rectifier system
Connect；The surge protector is used to produce moment when surge, by power rectifier system access equipotential system, voltage is carried out
Limitation, protects power rectifier system；The input reactance device is used to reduce current harmonics, limits the extraordinary wave movable property of line voltage
Influence of the raw dash current to power rectifier system and the motor servo driver of rear end, suppresses surge；The AC rectification
Unit is used to carry out rectification to power network alternating current.
Further, also including leakage aftercurrent action protecting equipment, the aftercurrent action protecting equipment connects institute
Breaker is stated, for when when breaker operation irregularity, detecting that residual current exceedes setting value in input power commutation system, breaking
Open the connection of power supply grid and power rectifier system.
Further, also it is used to control the working condition of the servo controller including contactor.
Further, also including Electro Magnetic Compatibility wave filter, the surge protector is connected to the input reactance device
Between, the electromagnetic interference for reducing the generation of power rectifier system, it is to avoid the other equipment in influence power network.
Compared with prior art, beneficial effects of the present invention
Power rectifier system for servo controller of the invention, can be good at protection servo-driver, especially protection and sets
It is standby not gushed impact by stronger thunder and lightning, it is to avoid equipment burns out.
Brief description of the drawings
It is the power rectifier system module block diagram for servo controller of the invention shown in Fig. 1.
It is the surge protector module frame chart for servo controller of the invention shown in Fig. 2.
Specific embodiment
With reference to specific embodiment, the present invention is described in further detail.But this should not be interpreted as the present invention
The scope of above-mentioned theme is only limitted to following embodiment, and all technologies realized based on present invention belong to model of the invention
Enclose.
Embodiment 1：
A kind of power rectifier system for servo controller, referring to Fig. 1, including the breaker 1, surge protector being sequentially connected
2nd, input reactance device 3, AC rectification unit 4；The breaker 1 is used to, when input current is excessive, disconnect power supply grid with electricity
The connection of source commutation system；The surge protector 2 is used to produce moment when surge, by power rectifier system access equipotential system
In system, voltage is limited, protect power rectifier system；The input reactance device 3 is used to reduce current harmonics, limits power network
Influence of the dash current that the unusual fluctuations of voltage are produced to power rectifier system and the motor servo driver of rear end, suppresses wave
Gush；The AC rectification unit 4 is used to carry out rectification to power network alternating current.
The reason for surge, is mainly, and jumbo starts, short-circuit power supply switches or is struck by lightning, when thunderbolt is tackled：Thunderbolt energy
Amount is huge（Average duration 5.5us, peak point current 150KA）, it is necessary to pass through to be classified the method released, could progressively by energy
It is put into the earth.In direct lightning strike guard plot（LPZ0）With the first guard plot（LPZ1）Intersection（Such as consumer unit）, it is necessary to install logical
Cross the experiment of I classes（Thunder and lightning flow is more than 100KA（Analog waveform is 10/350us）, the response time is less than 25ns）Surge protection
Device, the surge voltage of hundreds thousand of volts is limited within 2800V.It is the sense in the residual voltage of the prime that continues to release and region
Lightning surge voltage is answered, in the first guard plot（LPZ1）With the second guard plot（LPZ2）Intersection（Such as distribution electric box）, it is necessary to pacify
Dress is tested by II classes（Thunder and lightning flow is more than 40KA（Analog waveform is 8/20us）, the response time is less than 25ns）Surge protection
Device, surge voltage is limited within 1500V.On follow-up protection border（Such as electrical equipment regulator cubicle）, it is necessary to install by II
Class is tested（Thunder and lightning flow is more than 20KA（Analog waveform is 8/20us）, the response time is less than 25ns）Surge Protector, by wave
Voltage is gushed to be limited within 1000V.Overcurrent protective device should be concatenated before surge protector SPD（Air switch or fuse）,
Prevent SPD aging or short circuit causes harm to electric power system.It is different according to power network type（Such as TN-C type power networks, TN-S type power networks,
TT type power networks, IT type power networks）, different types of SPD and connected mode are selected, it is illustrated in figure 2 the general mode of connection, surge
Protector should be less than 10m with by protection equipment distance, and overcurrent protective device should be less than 0.5m with the distance of Surge Protector.
Power rectifier system is both a harmonic wave interference source（Produce current harmonics influence power network）, it is also a disturbed harmonic wave
Source（Absorb the surge current that the abnormal voltage wave zone from power network comes）.The effect of passive rectification input reactance device：Suppress electricity
The harmonic current that source commutation system is produced：Power rectifier system of the invention, the ac grid voltage of input is sine wave, but
Input current be 6 arteries and veins square waves, by Fourier space decompose, harmonic components mainly contain 5 times, 7 times, 11 times, 13 times, 17 times, 19
Inferior 6m ± 1（M=1,2,3 ...）Subharmonic.Each harmonic composition can preferably be suppressed, harmonic current reduction by 30% is reduced
Pollution to power network.The dash current for limiting the unusual fluctuations generation of line voltage drives to the motor of power rectifier system and rear end
The influence of moving cell constant power component, improves system reliability and service life.Generally, passive rectification input reactance device
It is essential component, especially in following occasion：The ratio between net capacity and frequency inverter capacity are 10：More than 1, or power supply capacity exists
More than 600KVA.Under this occasion, the large-scale electric equipment in power network in shutdown moment, due to having stray inductance, meeting on circuit
Produce huge voltage ripple of power network.When power network voltage between phases unbalance factor k is more than 2%, wherein k=（A maximum phase voltage
- minimum phase voltage）/ three-phase voltage average value x 100%, is provided with a large amount of motor drivers, or many on same circuit
Driver parallel running.Power network line power supply has the obvious disturbance from other equipment and produces dash current（Harmonic wave is disturbed, mistake
Voltage etc.）.Passive rectification unit is typically using the input reactance device of reactor benchmark pressure drop Δ UL=2%UN.The pressure of reactor
Drop Δ UL is defined as：When reactor flows through rated current IN, the pressure drop produced in reactor impedance.
In a detailed embodiment, also including leakage aftercurrent action protecting equipment, the residual current acting is protected
Protection unit connects the breaker, for when breaker operation irregularity, detecting input power commutation system in residual current surpass
When crossing setting value, the connection of power supply grid and power rectifier system is disconnected.
In a detailed embodiment, also it is used to control the working condition of the servo controller including contactor.
In a detailed embodiment, also including Electro Magnetic Compatibility wave filter, the surge protector and institute are connected to
State between input reactance device, the electromagnetic interference for reducing the generation of power rectifier system, it is to avoid the other equipment in influence power network.
Specific embodiment of the invention has been described in detail above in conjunction with accompanying drawing, but the present invention is not restricted to
Implementation method is stated, in the case of the spirit and scope for not departing from claims hereof, those skilled in the art can make
Go out various modifications or remodeling.
Claims (4)
1. a kind of power rectifier system for servo controller, it is characterised in that protected including the breaker that is sequentially connected, surge
Shield device, input reactance device, AC rectification unit；The breaker is used to, when input current is excessive, disconnect power supply grid with electricity
The connection of source commutation system；The surge protector is used to produce moment when surge, by power rectifier system access equipotential system
In system, voltage is limited, protect power rectifier system；The input reactance device is used to reduce current harmonics, limits power network
Influence of the dash current that the unusual fluctuations of voltage are produced to power rectifier system and the motor servo driver of rear end, suppresses wave
Gush；The AC rectification unit is used to carry out rectification to power network alternating current.
2. the power rectifier system for servo controller according to claim 1, it is characterised in that also remaining including leakage
Electric current action protecting device, the aftercurrent action protecting equipment connects the breaker, for when breaker operation irregularity,
When detecting that residual current exceedes setting value in input power commutation system, the company of power supply grid and power rectifier system is disconnected
Connect.
3. the power rectifier system for servo controller according to claim 1, it is characterised in that also including contactor
Working condition for controlling the servo controller.
4. the power rectifier system for servo controller according to claim 1, it is characterised in that also including electromagnetism and
Capacitive filter, is connected between the surge protector and the input reactance device, is produced for reducing power rectifier system
Electromagnetic interference, it is to avoid influence power network in other equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016824.1A CN106711927A (en) | 2017-01-10 | 2017-01-10 | Power rectifying system for servo driver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710016824.1A CN106711927A (en) | 2017-01-10 | 2017-01-10 | Power rectifying system for servo driver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106711927A true CN106711927A (en) | 2017-05-24 |
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ID=58908143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710016824.1A Pending CN106711927A (en) | 2017-01-10 | 2017-01-10 | Power rectifying system for servo driver |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201723424U (en) * | 2010-03-16 | 2011-01-26 | 杭州金兰达科技有限公司 | Dedicated power-saving device for air compressor |
| CN102215615A (en) * | 2010-04-02 | 2011-10-12 | 上海古森实业有限公司 | Driving circuit for LED (light emitting diode) lamp |
| CN202503448U (en) * | 2012-03-23 | 2012-10-24 | 郑州佛光发电设备有限公司 | Starting device |
| CN204119106U (en) * | 2014-08-28 | 2015-01-21 | 珠海格林赛威科技有限公司 | Motor power saving Intelligent management control system |
| CN105099237A (en) * | 2015-06-29 | 2015-11-25 | 广东食品药品职业学院 | Medical switching power supply for achieving short-circuit protection and leakage prevention |
| CN206490597U (en) * | 2017-01-10 | 2017-09-12 | 四川埃姆克伺服科技有限公司 | Power rectifier system |
-
2017
- 2017-01-10 CN CN201710016824.1A patent/CN106711927A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201723424U (en) * | 2010-03-16 | 2011-01-26 | 杭州金兰达科技有限公司 | Dedicated power-saving device for air compressor |
| CN102215615A (en) * | 2010-04-02 | 2011-10-12 | 上海古森实业有限公司 | Driving circuit for LED (light emitting diode) lamp |
| CN202503448U (en) * | 2012-03-23 | 2012-10-24 | 郑州佛光发电设备有限公司 | Starting device |
| CN204119106U (en) * | 2014-08-28 | 2015-01-21 | 珠海格林赛威科技有限公司 | Motor power saving Intelligent management control system |
| CN105099237A (en) * | 2015-06-29 | 2015-11-25 | 广东食品药品职业学院 | Medical switching power supply for achieving short-circuit protection and leakage prevention |
| CN206490597U (en) * | 2017-01-10 | 2017-09-12 | 四川埃姆克伺服科技有限公司 | Power rectifier system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |