CN103560681A - Four-quadrant frequency converter control device for AC drive system - Google Patents
Four-quadrant frequency converter control device for AC drive system Download PDFInfo
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- CN103560681A CN103560681A CN201310556856.2A CN201310556856A CN103560681A CN 103560681 A CN103560681 A CN 103560681A CN 201310556856 A CN201310556856 A CN 201310556856A CN 103560681 A CN103560681 A CN 103560681A
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Abstract
The invention discloses a four-quadrant frequency converter control device for an AC drive system. A four-quadrant frequency converter comprises a main circuit which is composed of a rectifying unit, a DC supporting capacitor and an inverter unit which are arranged in parallel connection. The control device comprises a rectifying current sensor which is used for detecting three-phase power line currents of a power grid, a voltage sensor used for detecting the voltages of the DC supporting capacitor, an inverter current sensor used for detecting three-phase electric wiring currents of the AC drive system, a rectifying side controller connected with the rectifying unit, and an inverter side controller connected with the inverter unit. The rectifying current sensor and the voltage sensor are connected with the rectifying side controller, and the inverter current sensor is connected with the inverter side controller. The four-quadrant frequency converter control device for the drive system effectively reduces the on-off frequency of an IGBT, reduces the heat loss of the device, lowers the radiating requirement for the frequency converter, and meanwhile improves the stability and the reliability of the four-quadrant frequency converter. The working efficiency of the AC drive system is obviously improved.
Description
Technical field
The present invention relates to a kind of four-quadrant frequency converter control device for AC Driving System.
Background technology
The four quadrant running of four-quadrant frequency converter is all to realize based on full control device-insulated gate bipolar transistor IGBT and PWM pulse modulation technology.Its circuit structure more complicated, need to install input sine wave filter additional and the reactor that boosts, and makes transducer body volume larger, is unfavorable for being arranged in the less AC Driving System in inner space; Secondly, due to frequently turning on and off of insulated gate bipolar transistor IGBT, must increase the thermal losses of device itself, also just the heat-sinking capability of frequency converter is had higher requirement, meanwhile, reduce the stability of four-quadrant frequency converter, also reduced the operating efficiency of AC Driving System.
Summary of the invention
Object of the present invention, provides a kind of four-quadrant frequency converter control device for AC Driving System exactly in order to address the above problem.
The object of the present invention is achieved like this:
A kind of four-quadrant frequency converter control device for AC Driving System of the present invention, described four-quadrant frequency converter comprises main circuit, described four-quadrant frequency converter control device is connected with this main circuit, and described main circuit consists of the rectification unit being arranged in parallel, DC support electric capacity and inversion unit;
The rectification branch road that described rectification unit You San road is arranged in parallel forms, it is in series that two insulated gate bipolar transistor IGBTs of route are propped up in each rectification, and each insulated gate bipolar transistor IGBT inverse parallel has diode, connected node in each rectification branch road between two insulated gate bipolar transistor IGBTs is connected with connection wire ，San road rectification branch road and is connected with the three-phase power line of electrical network respectively by connecting wire;
The inversion branch road that described inversion unit You San road is arranged in parallel forms, it is in series that two insulated gate bipolar transistor IGBTs of route are propped up in each inversion, and each insulated gate bipolar transistor IGBT inverse parallel has diode, connected node in each inversion branch road between two insulated gate bipolar transistor IGBTs is connected with connection wire ，San road inversion branch road and is connected with the three-phase electricity wiring of AC Driving System respectively by connecting wire;
Described four-quadrant frequency converter control device comprises the first to the 3rd current sensor that is serially connected with respectively in electrical network three-phase power line on each phase power line and detects its electric current, be parallel to described DC support electric capacity two ends and detect the voltage sensor of its voltage, be serially connected with in the three-phase electricity wiring of described AC Driving System in each mutually electric wiring and detect the 4th to the 6th current sensor of its electric current, be connected and control with insulated gate bipolar transistor IGBT in described rectification unit the rectification side controller that it turns on and off respectively, and be connected and control with insulated gate bipolar transistor IGBT in described inversion unit the inversion side controller that it turns on and off respectively, wherein, the described first to the 3rd current sensor is connected with described rectification side controller respectively with voltage sensor, described the 4th to the 6th current sensor is connected with described inversion side controller respectively.
The present invention has effectively reduced the frequency that turns on and off of insulated gate bipolar transistor IGBT, reduced the thermal losses of device itself, reduced the heat radiation requirement to frequency converter, improved stability and the reliability of four-quadrant frequency converter in AC Driving System, the operating efficiency of AC Driving System obviously improves simultaneously; Secondly, on main circuit structure, removed sine wave filter and the reactor that boosts, effectively reduced the volume of transducer body, be beneficial to and be arranged in the less AC Driving System in inner space.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Refer to Fig. 1, there is shown the present invention for the four-quadrant frequency converter control device of AC Driving System, four-quadrant frequency converter comprises main circuit, four-quadrant frequency converter control device is connected with this main circuit, and main circuit consists of the rectification unit 1 being arranged in parallel, DC support electric capacity 2 and inversion unit 3;
The rectification branch road that rectification unit 1 You San road is arranged in parallel forms, it is in series that two insulated gate bipolar transistor IGBTs 4 of route are propped up in each rectification, and each insulated gate bipolar transistor IGBT 4 inverse parallel has diode 5, connected node in each rectification branch road between two insulated gate bipolar transistor IGBTs 4 is connected with connection wire ，San road rectification branch road and is connected with A, B, the C three-phase power line of electrical network respectively by connecting wire;
The inversion branch road that inversion unit 3 You San roads are arranged in parallel forms, it is in series that two insulated gate bipolar transistor IGBTs 4 of route are propped up in each inversion, and each insulated gate bipolar transistor IGBT 4 inverse parallel has diode 5, connected node in each inversion branch road between two insulated gate bipolar transistor IGBTs 4 is connected with connection wire ，San road inversion branch road and is connected with A1, B1, the wiring of C1 three-phase electricity of AC Driving System respectively by connecting wire;
Four-quadrant frequency converter control device comprises the first current sensor 61 that is serially connected with in electrical network three-phase power line on A phase power line and detects its electric current, be serially connected with in electrical network three-phase power line on B phase power line and detect the second current sensor 62 of its electric current, be serially connected with in electrical network three-phase power line on C phase power line and detect the 3rd current sensor 63 of its electric current, be parallel to DC support electric capacity 2 two ends and detect the voltage sensor 64 of its voltage, be serially connected with in the three-phase electricity wiring of AC Driving System in the mutually electric wiring of A1 and detect the 4th current sensor 71 of its electric current, be serially connected with in the three-phase electricity wiring of AC Driving System in the mutually electric wiring of B1 and detect the 5th current sensor 72 of its electric current, be serially connected with in the three-phase electricity wiring of AC Driving System in the mutually electric wiring of C1 and detect the 6th current sensor 73 of its electric current, be connected and control with insulated gate bipolar transistor IGBT 4 in rectification unit 1 the rectification side controller 6 that it turns on and off respectively, and be connected and control with insulated gate bipolar transistor IGBT 4 in inversion unit 3 the inversion side controller 7 that it turns on and off respectively, the first to the 3rd current sensor 61-63 is connected with rectification side controller 6 respectively with voltage sensor 64, the the 4th to the 6th transducer 71-73 is connected with inversion side controller 7 respectively.
Three-phase alternating current flows to rectification unit 1 by electrical network, all insulated gate bipolar transistor IGBTs 4 that rectification side controller 6 is controlled in rectification unit 1 turn-off, and three-phase alternating current is through changing into direct current with the antiparallel diode 5 of insulated gate bipolar transistor IGBT 4 by alternating current in rectification unit 1 three branch roads;
In said process, the voltage of each phase current of electrical network A, B, C three-phase power line and DC support electric capacity 2 is sampled, meanwhile, each phase current of the A1 of AC Driving System, B1, the wiring of C1 three-phase electricity is sampled;
According to sampled result, under judgement real-time status, whether DC support electric capacity 2 voltages reach set point, the phase line that in electrical network A, B, C three-phase power line, electric current is the highest and the minimum phase line of electric current, and the highest phase line and the minimum phase line of electric current of electric current in the A1 of AC Driving System, B1, the wiring of C1 three-phase electricity;
If DC support electric capacity 2 voltages reach set point, by rectification side controller 6, control the open-minded of insulated gate bipolar transistor IGBT 4 in the rectification branch road that the highest phase line phase line minimum with electric current of electric current be connected respectively, and control the open-minded of insulated gate bipolar transistor IGBT 4 in the inversion branch road that the highest phase line phase line minimum with electric current of electric current be connected respectively by inversion side controller 7.
Above embodiment is used for illustrative purposes only, but not limitation of the present invention, person skilled in the relevant technique, without departing from the spirit and scope of the present invention, can also make various conversion or modification, therefore all technical schemes that are equal to also should belong to category of the present invention, should be limited by each claim.
Claims (1)
1. the four-quadrant frequency converter control device for AC Driving System, described four-quadrant frequency converter comprises main circuit, described four-quadrant frequency converter control device is connected with this main circuit, it is characterized in that, described main circuit consists of the rectification unit being arranged in parallel, DC support electric capacity and inversion unit;
The rectification branch road that described rectification unit You San road is arranged in parallel forms, it is in series that two insulated gate bipolar transistor IGBTs of route are propped up in each rectification, and each insulated gate bipolar transistor IGBT inverse parallel has diode, connected node in each rectification branch road between two insulated gate bipolar transistor IGBTs is connected with connection wire ，San road rectification branch road and is connected with the three-phase power line of electrical network respectively by connecting wire;
The inversion branch road that described inversion unit You San road is arranged in parallel forms, it is in series that two insulated gate bipolar transistor IGBTs of route are propped up in each inversion, and each insulated gate bipolar transistor IGBT inverse parallel has diode, connected node in each inversion branch road between two insulated gate bipolar transistor IGBTs is connected with connection wire ，San road inversion branch road and is connected with the three-phase electricity wiring of AC Driving System respectively by connecting wire;
Described four-quadrant frequency converter control device comprises the first to the 3rd current sensor that is serially connected with respectively in electrical network three-phase power line on each phase power line and detects its electric current, be parallel to described DC support electric capacity two ends and detect the voltage sensor of its voltage, be serially connected with in the three-phase electricity wiring of described AC Driving System in each mutually electric wiring and detect the 4th to the 6th current sensor of its electric current, be connected and control with insulated gate bipolar transistor IGBT in described rectification unit the rectification side controller that it turns on and off respectively, and be connected and control with insulated gate bipolar transistor IGBT in described inversion unit the inversion side controller that it turns on and off respectively, wherein, the described first to the 3rd current sensor is connected with described rectification side controller respectively with voltage sensor, described the 4th to the 6th current sensor is connected with described inversion side controller respectively.
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| CN201310556856.2A CN103560681A (en) | 2013-11-11 | 2013-11-11 | Four-quadrant frequency converter control device for AC drive system |
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| CN201310556856.2A CN103560681A (en) | 2013-11-11 | 2013-11-11 | Four-quadrant frequency converter control device for AC drive system |
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| CN2907030Y (en) * | 2006-05-31 | 2007-05-30 | 张淼 | Low Harmonic Frequency Converter with Reactive Power Compensation |
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| CN101459386A (en) * | 2007-12-10 | 2009-06-17 | 张东胜 | Electricity production feedback system using renewable energy source |
| CN101604953A (en) * | 2009-07-13 | 2009-12-16 | 山西合创电力科技有限公司 | Permanent-magnetic wind driven generator vector and direct torque control integrated approach |
| CN101702616A (en) * | 2009-12-09 | 2010-05-05 | 哈尔滨工业大学 | Induction motor four-quadrant frequency conversion speed control device |
| CN101877541A (en) * | 2009-04-29 | 2010-11-03 | 深圳市英威腾电气股份有限公司 | High-power four-quadrant frequency converter and power unit |
| CN102255586A (en) * | 2011-06-27 | 2011-11-23 | 大禹电气科技股份有限公司 | Constant power wide speed regulation control method for permanent magnet synchronous motor |
| CN102412735A (en) * | 2011-12-06 | 2012-04-11 | 中国煤炭科工集团太原研究院 | Control method for four-quadrant frequency converter |
-
2013
- 2013-11-11 CN CN201310556856.2A patent/CN103560681A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2907030Y (en) * | 2006-05-31 | 2007-05-30 | 张淼 | Low Harmonic Frequency Converter with Reactive Power Compensation |
| CN101106338A (en) * | 2006-07-14 | 2008-01-16 | 上海神源电气有限公司 | Bidirectional power flow efficient energy saving converter |
| CN101459386A (en) * | 2007-12-10 | 2009-06-17 | 张东胜 | Electricity production feedback system using renewable energy source |
| CN101267179A (en) * | 2008-04-23 | 2008-09-17 | 南京航空航天大学 | High-speed brushless DC motor starting/generating system based on two-stage matrix converter |
| CN101425756A (en) * | 2008-07-30 | 2009-05-06 | 东元总合科技（杭州）有限公司 | DC lateral voltage controllable 4 quadrant frequency transformer and method thereof |
| CN101877541A (en) * | 2009-04-29 | 2010-11-03 | 深圳市英威腾电气股份有限公司 | High-power four-quadrant frequency converter and power unit |
| CN101604953A (en) * | 2009-07-13 | 2009-12-16 | 山西合创电力科技有限公司 | Permanent-magnetic wind driven generator vector and direct torque control integrated approach |
| CN101702616A (en) * | 2009-12-09 | 2010-05-05 | 哈尔滨工业大学 | Induction motor four-quadrant frequency conversion speed control device |
| CN102255586A (en) * | 2011-06-27 | 2011-11-23 | 大禹电气科技股份有限公司 | Constant power wide speed regulation control method for permanent magnet synchronous motor |
| CN102412735A (en) * | 2011-12-06 | 2012-04-11 | 中国煤炭科工集团太原研究院 | Control method for four-quadrant frequency converter |
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Application publication date: 20140205 |