CN101388642A - Power-on buffering and dynamic urgent braking apparatus for AC servo system - Google Patents
Power-on buffering and dynamic urgent braking apparatus for AC servo system Download PDFInfo
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- CN101388642A CN101388642A CNA2008100648911A CN200810064891A CN101388642A CN 101388642 A CN101388642 A CN 101388642A CN A2008100648911 A CNA2008100648911 A CN A2008100648911A CN 200810064891 A CN200810064891 A CN 200810064891A CN 101388642 A CN101388642 A CN 101388642A
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Abstract
The invention relates to a power-on cushioning and dynamic emergency braking device of an alternating current servomechanism. The invention relates to major loop hardware of an alternating current servo driver. The major loop hardware solves the problem that a plurality of relays control power-on cushioning and dynamic emergency braking respectively in the alternating current servomechanism. A positive output end of a rectifier bridge is connected with one end of a thermal resistor and a relay normally-open moving contact, the other end of the thermal resistor is connected with one end of an energy storage capacitor, an input end of an inverter bridge, one end of an absorbing circuit and a stationary contact of the relay, a normally-closed moving contact of the relay is connected with the other end of the absorbing circuit and one end of the energy consumption resistance, the other end of the energy consumption resistance is connected with a first fast recovery diode anode, a second fast recovery diode anode and a third fast recovery diode anode, a first fast recovery diode cathode, a second fast recovery diode cathode and a third fast recovery diode cathode are respectively connected with a U phase, a V phase and a W phase of a motor, the U phase, the V phase and the W phase of the motor are respectively connected with three output ends of the converter bridge, and the other input end of the converter bridge is connected with the other end of the energy storage capacitor and a negative output end of the rectifier bridge. The major loop hardware reduces the size of the driver and lowers the cost.
Description
Technical field
The present invention relates to the major loop hardware of AC servo driver.
Background technology
The major loop of AC servo driver adopts the ac-dc-ac transform structure usually, is DC power supply with line voltage by the rectifier bridge rectification earlier promptly, is the AC power of the variable ratio frequency changer transformation of drive motors operation with the DC power supply inversion by inverter again.Before powering on,, at the line voltage impact constantly, can cause intense impact, greatly reduce its useful life rectifier bridge and storage capacitor because the storage capacitor of DC power supply does not have voltage can be approximately short circuit.Therefore, between rectifier bridge and DC power supply, seal in thermistor usually, in order to absorb the surge current of powered on moment.Thermistor is divided into two kinds of positive temperature coefficient and negative temperature coefficients, and the resistance of thermistor and temperature are proportional to be positive temperature coefficient, otherwise then is negative temperature coefficient.And the temperature of thermistor is directly proportional all the time with electric current, so the thermistor of Positive and Negative Coefficient Temperature exists more different in application.The two can effectively absorb surge current in the back that powers on, but when normality, because semistor along with the rising resistance of temperature can be increasing, for reducing loss, falls semistor usually in the back short circuit that powers on.And negative tempperature coefficient thermistor power on the back resistance can be more and more lower, cause that loss can ignore, general uncontrolledly be serially connected in the loop always.In addition, semistor also has defencive function.When finding mistake, it is put in the circuit again, can stop electric network source to continue storage capacitor and inverter bridge to be played a protective role to DC power supply.
Dynamically brake hard is meant the function of braking with the rotating energy of resistance consumption motor, is the universal method that a kind of motor promptly stops, and can effectively shorten the braking time of motor.
AC servo powers on to cushion with dynamic brake hard and adopts two cover work systems to control respectively.
Summary of the invention
The present invention is for solving a plurality of relays the power on buffering and dynamic problem of brake hard of control in AC servo respectively, and proposed AC servo power on buffering and dynamic emergency braking apparatus.
AC servo of the present invention powers on to cushion with dynamic emergency braking apparatus and is made up of rectifier bridge, inverter bridge, thermistor PTC1, storage capacitor C1, absorption circuit, energy consumption resistance R1, the first fast recovery diode D1 to the, three fast recovery diode D3 and relay R ELAY1; What the positive output end of rectifier bridge connected the end of thermistor PTC1 and relay R ELAY1 often starts the contact, the other end of thermistor PTC1 connects the end of storage capacitor C1, an input of inverter bridge, absorb an end of circuit and the fixed contact of relay R ELAY1, the normally closed moving contact of relay R ELAY1 connects the other end of absorption circuit and the end of energy consumption resistance R1, the other end of energy consumption resistance R1 connects the anode of the first fast recovery diode D1 to the, three fast recovery diode D3, the negative electrode of the first fast recovery diode D1 to the, three fast recovery diode D3 connects the U phase of motor respectively, V mutually with W mutually, the U phase of described motor, V is connected three outputs of inverter bridge mutually mutually respectively with W, another input of inverter bridge connects the other end of storage capacitor C1 and the negative output terminal of rectifier bridge.
The present invention is AC servo power on buffer unit and the dynamically unified design of emergency braking apparatus, the two by single relay control realize powering on buffering, dynamically protection such as brake hard is moved.The bypass circulation that the buffer unit that wherein powers on is made of thermistor PTC1 and relay normally open moving contact C; The loop that dynamic emergency braking apparatus is made of energy consumption resistance R1, the first fast recovery diode D1 to the, three fast recovery diode D3 and relay normally-closed contact.Thermistor among the present invention adopts positive temperature coefficient type, needs during the driver operate as normal thermistor short circuit from circuit; Dynamically emergency braking apparatus is inoperative when system's operate as normal, it need be opened a way.Patent of the present invention is only switched with the control of dynamically brake hard with the relay buffering that can realize powering on, and has reduced driver size, has reduced cost; And, when breaking down, can on hardware designs, further protect the safety of storage capacitor and inverter.
Description of drawings
Fig. 1 for the present invention at the AC servo circuit diagram preceding and when breaking down that powers on; Fig. 2 is the circuit diagram of the present invention when the AC servo operate as normal.
Embodiment
Embodiment one: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, present embodiment is made up of rectifier bridge 1, inverter bridge 2, thermistor PTC1, storage capacitor C1, absorption circuit 3, energy consumption resistance R1, the first fast recovery diode D1 to the, three fast recovery diode D3 and relay R ELAY1; What the positive output end of rectifier bridge 1 connected the end of thermistor PTC1 and relay R ELAY1 often starts contact C, the other end of thermistor PTC1 connects the end of storage capacitor C1, an input of inverter bridge 2, absorb an end of circuit 3 and the fixed contact A of relay R ELAY1, the normally closed moving contact B of relay R ELAY1 connects the other end of absorption circuit 3 and the end of energy consumption resistance R1, the other end of energy consumption resistance R1 connects the anode of the first fast recovery diode D1 to the, three fast recovery diode D3, the negative electrode of the first fast recovery diode D1 to the, three fast recovery diode D3 connects the U phase of motor respectively, V mutually with W mutually, the U phase of described motor, V is connected three outputs of inverter bridge 2 mutually mutually respectively with W, another input of inverter bridge 2 connects the other end of storage capacitor C1 and the negative output terminal of rectifier bridge 1.
Embodiment two: in conjunction with Fig. 1 and Fig. 2 present embodiment is described, present embodiment and embodiment one difference are that thermistor PTC1 is a semistor.Other composition is identical with embodiment one with connected mode.
The principle of the invention:
Powered on moment, buffer circuit starts, the controller of system monitors DC bus-bar voltage, after reaching presetting range, the controller control relay fixed contact A of system switches to normally opened contact C, and relay is with thermistor PTC1 short circuit at this moment, and busbar voltage is charged to normal value, dynamically emergency braking apparatus is opened a way, and system begins operate as normal.
When breaking down, start dynamic emergency braking apparatus, controller switches to the brake hard of normally closed moving contact B enables dynamic with the fixed contact A of relay, and motor can be shut down rapidly.Compare simple dynamically emergency braking apparatus, among the present invention, when starting dynamic brake hard, also thermistor PTC1 is put into again in the middle of the circuit, further protection system safety.Because even this moment, the drive signal mistake still was a motoring condition, because it be the additional energy of bus charging that the effect of dynamic emergency braking apparatus makes system need big electric current, and stopping owing to thermistor PTC1, having blocked electric network source continues to charge to bus storage capacitor C1, busbar voltage will reduce rapidly, the motor stall.And can stop motor by counter the dragging of external force high speed; Even be forced to counter dragging, this moment, the storage capacitor C1 of dc bus can not be forced to charging yet, caused accident.
Claims (2)
1, power on buffering and dynamic emergency braking apparatus of AC servo, it is characterized in that it by rectifier bridge (1), inverter bridge (2), thermistor PTC1, storage capacitor C1, absorb circuit (3), energy consumption resistance R1, the first fast recovery diode D1 to the, three fast recovery diode D3 and relay R ELAY1 and form; What the positive output end of rectifier bridge (1) connected the end of thermistor PTC1 and relay R ELAY1 often starts contact (C), the other end of thermistor PTC1 connects the end of storage capacitor C1, an input of inverter bridge (2), absorb an end of circuit (3) and the fixed contact (A) of relay R ELAY1, the normally closed moving contact (B) of relay R ELAY1 connects the other end of absorption circuit (3) and the end of energy consumption resistance R1, the other end of energy consumption resistance R1 connects the anode of the first fast recovery diode D1 to the, three fast recovery diode D3, the negative electrode of the first fast recovery diode D1 to the, three fast recovery diode D3 connects the U phase of motor respectively, V mutually with W mutually, the U phase of described motor, V is connected three outputs of inverter bridge (2) mutually mutually respectively with W, another input of inverter bridge (2) connects the other end of storage capacitor C1 and the negative output terminal of rectifier bridge (1).
2, AC servo according to claim 1 powers on and cushions and dynamic emergency braking apparatus, it is characterized in that thermistor PTC1 is a semistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100648911A CN101388642A (en) | 2008-07-09 | 2008-07-09 | Power-on buffering and dynamic urgent braking apparatus for AC servo system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100648911A CN101388642A (en) | 2008-07-09 | 2008-07-09 | Power-on buffering and dynamic urgent braking apparatus for AC servo system |
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| Publication Number | Publication Date |
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| CN101388642A true CN101388642A (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100648911A Pending CN101388642A (en) | 2008-07-09 | 2008-07-09 | Power-on buffering and dynamic urgent braking apparatus for AC servo system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013872A (en) * | 2009-09-04 | 2011-04-13 | 洛克威尔自动控制技术股份有限公司 | Dynamic braking for current source converter based drive |
| CN102812238A (en) * | 2010-03-23 | 2012-12-05 | 穆格昂纳公司 | Pitch drive device capable of emergency operation for a wind or water power plant |
| CN102820837A (en) * | 2011-06-08 | 2012-12-12 | 株式会社安川电机 | Motor control device |
| CN103595235A (en) * | 2013-10-29 | 2014-02-19 | 江苏绿扬电子仪器集团有限公司 | Preceding stage protection system of inverter |
| CN104935216A (en) * | 2014-03-20 | 2015-09-23 | 大银微系统股份有限公司 | Hybrid brake module with regenerative function |
| CN106787664A (en) * | 2016-12-16 | 2017-05-31 | 欣旺达电子股份有限公司 | Soft starting circuit |
| CN109358288A (en) * | 2018-12-17 | 2019-02-19 | 南京埃斯顿自动化股份有限公司 | A kind of fault detection method of servo dynamic brake circuit |
| CN110912467A (en) * | 2019-12-13 | 2020-03-24 | 浙江禾川科技股份有限公司 | Motor driving circuit |
| CN111010027A (en) * | 2019-12-25 | 2020-04-14 | 广州市精源电子设备有限公司 | Power factor correction circuit, method and device for resistance spot welding inverter power supply |
| CN111149289A (en) * | 2017-09-25 | 2020-05-12 | 西门子股份公司 | Braking method for an electric motor |
| CN111200355A (en) * | 2018-11-19 | 2020-05-26 | 上海微电子装备（集团）股份有限公司 | Power-on buffer circuit |
-
2008
- 2008-07-09 CN CNA2008100648911A patent/CN101388642A/en active Pending
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102013872A (en) * | 2009-09-04 | 2011-04-13 | 洛克威尔自动控制技术股份有限公司 | Dynamic braking for current source converter based drive |
| CN102013872B (en) * | 2009-09-04 | 2014-05-07 | 洛克威尔自动控制技术股份有限公司 | Dynamic braking for current source converter based drive |
| CN102812238A (en) * | 2010-03-23 | 2012-12-05 | 穆格昂纳公司 | Pitch drive device capable of emergency operation for a wind or water power plant |
| CN102812238B (en) * | 2010-03-23 | 2016-03-02 | 穆格昂纳公司 | For the pitch driving arrangement that can carry out instant operation of wind-force or hydroelectric power plant |
| CN102820837A (en) * | 2011-06-08 | 2012-12-12 | 株式会社安川电机 | Motor control device |
| CN102820837B (en) * | 2011-06-08 | 2014-12-24 | 株式会社安川电机 | Motor control device |
| CN103595235A (en) * | 2013-10-29 | 2014-02-19 | 江苏绿扬电子仪器集团有限公司 | Preceding stage protection system of inverter |
| CN104935216A (en) * | 2014-03-20 | 2015-09-23 | 大银微系统股份有限公司 | Hybrid brake module with regenerative function |
| CN106787664A (en) * | 2016-12-16 | 2017-05-31 | 欣旺达电子股份有限公司 | Soft starting circuit |
| CN111149289A (en) * | 2017-09-25 | 2020-05-12 | 西门子股份公司 | Braking method for an electric motor |
| CN111149289B (en) * | 2017-09-25 | 2023-06-30 | 西门子股份公司 | Braking method for motor |
| CN111200355A (en) * | 2018-11-19 | 2020-05-26 | 上海微电子装备（集团）股份有限公司 | Power-on buffer circuit |
| CN111200355B (en) * | 2018-11-19 | 2021-04-09 | 上海微电子装备（集团）股份有限公司 | Power-on buffer circuit |
| CN109358288A (en) * | 2018-12-17 | 2019-02-19 | 南京埃斯顿自动化股份有限公司 | A kind of fault detection method of servo dynamic brake circuit |
| CN110912467A (en) * | 2019-12-13 | 2020-03-24 | 浙江禾川科技股份有限公司 | Motor driving circuit |
| WO2021114418A1 (en) * | 2019-12-13 | 2021-06-17 | 浙江禾川科技股份有限公司 | Electric motor drive circuit |
| CN111010027A (en) * | 2019-12-25 | 2020-04-14 | 广州市精源电子设备有限公司 | Power factor correction circuit, method and device for resistance spot welding inverter power supply |
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Open date: 20090318 |