CN104242686A - Double-closed-loop PI regulator of unit power factor PWM current rectifier - Google Patents
Double-closed-loop PI regulator of unit power factor PWM current rectifier Download PDFInfo
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- CN104242686A CN104242686A CN201310246474.XA CN201310246474A CN104242686A CN 104242686 A CN104242686 A CN 104242686A CN 201310246474 A CN201310246474 A CN 201310246474A CN 104242686 A CN104242686 A CN 104242686A
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Abstract
The invention discloses a double-closed-loop PI regulator of a unit power factor PWM current rectifier. The double-closed-loop PI regulator comprises a current regulator and a voltage regulator, wherein a current loop in the current regulator serves as an inner loop and forces an input current to track an input voltage, so that the dynamic response performance of a system is improved; if it is assumed that a given voltage is not saturated in a PWM linear modulation region, the current on a d-axis and the current on a q-axis are completely decoupled; the voltage regulator serves as an outer loop regulator and can stabilize an output DC voltage to make the output DC voltage higher than the peak value of the input voltage. A simplified mathematical model of the double-closed-loop PI regulator truly reflects the coupling relation between the input currents of the system; all the regulating loops of the system are described through a first-order inertial element or a second-order inertial element, and PI parameters of the current regulator and PI parameters of the voltage regulator are designed according to the stability and response time of the system.
Description
Technical field
The present invention relates to a kind of Unity Power Factor PWM Rectifier two close cycles pi regulator.
Background technology
Rectifier proportion in whole power electronic equipment is very large, and most DC power supply all needs to be obtained by AC power supplies rectification.But the shortcomings such as conventional diode rectification or phase control rectifier exist, and power factor is low, AC input current Severe distortion, bring a large amount of harmonic pollution [1] to utility network.High-power factor PWM rectifier has and exchanges input side current waveform and be tending towards the advantages such as sineization, power factor are high, energy feedback, be widely used in frequency control (as company of Fuji RHC Series Frequency Converter) and UPS (Uninterrupted Pow2er Supply) power supply (as Toshiba POWERSTAR series), phase control rectifier or diode rectification can be replaced.But under this rectification circuit works in switching mode, be a strongly non-linear system, between electric current, there is close coupling, make troubles to design con-trol circuit.The two close cycles serials control of outer voltage and current inner loop is control mode the most conventional at present, but does not further investigate for the specific design of the double-closed-loop control PWM rectifier be made up of pi regulator.
Summary of the invention
The defect that the present invention seeks to exist for prior art provides a kind of Unity Power Factor PWM Rectifier two close cycles pi regulator.
The present invention for achieving the above object, adopts following technical scheme:
Unity Power Factor PWM Rectifier two close cycles pi regulator of the present invention, is characterized in that comprising current regulator and voltage regulator, and wherein in current regulator, electric current loop, as inner ring, forces input current to follow the tracks of input voltage, improves the dynamic response performance of system; Assuming that given voltage does not have saturated in PWM linear modulation district, d, q shaft current is completely by decoupling zero; Voltage regulator regulates can stablize output dc voltage as outer shroud, makes output dc voltage higher than input voltage peak value.
Simplification Mathematical Modeling of the present invention truly reflects the coupled relation between system input current, by using one order inertia or second-order inertia link to carry out each adjustable ring of descriptive system, and devise the PI parameter of electric current and voltage regulator according to the stability of a system and response time.The method demonstrating Selecting All Parameters through emulation and experiment is correct, rational, and the PI parameter chosen makes system have good dynamic property and steady-state behaviour.
Accompanying drawing explanation
Fig. 1: structural representation of the present invention.
Embodiment
As shown in Figure 1, Unity Power Factor PWM Rectifier two close cycles pi regulator of the present invention, is characterized in that comprising current regulator and voltage regulator, wherein in current regulator electric current loop as inner ring, force input current to follow the tracks of input voltage, improve the dynamic response performance of system; Assuming that given voltage does not have saturated in PWM linear modulation district, d, q shaft current is completely by decoupling zero; Voltage regulator regulates as outer shroud, can stablize output dc voltage, makes output dc voltage higher than input voltage peak value.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (1)
1. a Unity Power Factor PWM Rectifier two close cycles pi regulator, is characterized in that comprising current regulator and voltage regulator, and wherein in current regulator, electric current loop, as inner ring, forces input current to follow the tracks of input voltage, improves the dynamic response performance of system; Assuming that given voltage does not have saturated in PWM linear modulation district, d, q shaft current is completely by decoupling zero; Voltage regulator regulates as outer shroud, can stablize output dc voltage, makes output dc voltage higher than input voltage peak value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310246474.XA CN104242686A (en) | 2013-06-18 | 2013-06-18 | Double-closed-loop PI regulator of unit power factor PWM current rectifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310246474.XA CN104242686A (en) | 2013-06-18 | 2013-06-18 | Double-closed-loop PI regulator of unit power factor PWM current rectifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104242686A true CN104242686A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310246474.XA Pending CN104242686A (en) | 2013-06-18 | 2013-06-18 | Double-closed-loop PI regulator of unit power factor PWM current rectifier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159068A (en) * | 2015-07-23 | 2015-12-16 | 南京信息工程大学 | Parameter design method of improved second-order system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909689Y (en) * | 2006-04-30 | 2007-06-06 | 石家庄市联力创佳科技有限公司 | High efficient three-phase power factor correction dipolar output circuit |
| CN101355311A (en) * | 2007-07-23 | 2009-01-28 | 三垦电气株式会社 | AC-DC converter |
-
2013
- 2013-06-18 CN CN201310246474.XA patent/CN104242686A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2909689Y (en) * | 2006-04-30 | 2007-06-06 | 石家庄市联力创佳科技有限公司 | High efficient three-phase power factor correction dipolar output circuit |
| CN101355311A (en) * | 2007-07-23 | 2009-01-28 | 三垦电气株式会社 | AC-DC converter |
Non-Patent Citations (1)
| Title |
|---|
| 赵振波，李和明: "单位功率因数PWM整流器双闭环PI调节器设计", 《电工技术杂志》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105159068A (en) * | 2015-07-23 | 2015-12-16 | 南京信息工程大学 | Parameter design method of improved second-order system |
| CN105159068B (en) * | 2015-07-23 | 2017-08-11 | 南京信息工程大学 | A kind of Parameters design of modified second-order system |
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Application publication date: 20141224 |
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