關(guān)于三相變頻電源的外文資料翻譯--設(shè)計和實(shí)現(xiàn)三相pwm整流器的高性能的直接功率控制（英文）

1、Design and implementation of high performance direct power control of three-phase PWM rectifier, via fuzzy and PI controller for output voltage regulationAbdelouahab Bouafia a,*, Fateh Krim a, Jean-Paul Gaubert ba Labora

2、toire d’Electronique de Puissance et Commande Industrielle (LEPCI), Université de Sétif, Departement d’électronique, Route de Bejaia, Setif, Algeria b Laboratoire d’Automatique et d’Informatique Industriel

3、le (LAII), ESIP, Université de Poitiers, Francea r t i c l e i n f oArticle history:Received 5 February 2008Accepted 6 September 2008Available online 23 October 2008Keywords:Direct power controlPWM rectifierInstanta

4、neous active and reactive powerTotal power factorDTCSwitching tableFuzzy logic controla b s t r a c tThis paper proposes direct power control (DPC) for three-phase PWM rectifiers using a new switchingtable, without line

5、voltage sensors. The instantaneous active and reactive powers, directly controlledby selecting the optimum state of the converter, are used as the PWM control variables instead of thephase line currents being used. The m

6、ain goal of the control system is to maintain the dc-bus voltageat the required level, while input currents drawn from the power supply should be sinusoidal and inphase with respective phase voltages to satisfy the unity

7、 power factor (UPF) operation. ConventionalPI and a designed fuzzy logic-based controller, in the dc-bus voltage control loop, have been used to pro-vide active power command. A dSPACE based experimental system was devel

8、oped to verify the validity ofthe proposed DPC. The steady-state, and dynamic results illustrating the operation and performance ofthe proposed control scheme are presented. As a result, it was confirmed that the novel D

9、PC is much bet-ter than the classical one. Line currents very close to sinusoidal waveforms (THD < 2%) and good regula-tion of dc-bus voltage are achieved using PI or fuzzy controller. Moreover, fuzzy logic controller

10、 givesexcellent performance in transient state, a good rejection of impact load disturbance, and a goodrobustness.? 2008 Elsevier Ltd. All rights reserved.1. IntroductionMost three-phase rectifiers, extensively employed

11、in industrial fields and consumer products, use a diode bridge circuit and a bulk storage capacitor. This has the advantages of being simple, robust, and low in cost. However, a diode rectifier results in only unidirec-

12、tional power flow, low power factor, and high level of harmonic in- put currents. Apart from application of active and passive filters, the best solution is in using pulse width modulated (PWM) rectifi- ers. Research int

13、erest in three-phase PWM rectifiers has grown rapidly over the last few years due to some of their important advantages, such as power regeneration capabilities, control of dc-bus voltage over a wide range, and low harmo

14、nic distortion of input currents. Since the converter has abilities to control the input currents in sinusoidal waveforms, unity power factor (UPF) opera- tion can be easily performed by regulating the currents in phase

15、with the power-source voltages. Various control strategies have been proposed in recent works on this type of PWM rectifier. It can be classified for its use of cur-rent loop controllers or active/reactive power controll

16、ers. The well- known method of indirect active and reactive power control is based on current vector orientation with respect to the line voltage vector. It is called voltage-oriented control (VOC) [1–5]. VOC guar- antee

17、s high dynamics and static performance via internal current control loops. However, the final configuration and performance of the VOC system largely depends on the quality of the applied current control strategy. Over t

18、he last few years, an interesting emerging control technique has been direct power control (DPC), developed analogously with the well-known direct torque control (DTC) used for adjustable speed drives [5–12]. In DPC sche

19、mes, there are no internal current loops and the converter switching states are appropriately selected by a switching table based on the instantaneous errors, between the commanded and estimated values of instantaneous a

20、ctive and reactive power, and the power- source voltage vector position [6] or virtual-flux vector position [8]. This paper proposes a novel direct power control (DPC) for a three-phase PWM rectifier, which makes it poss

21、ible to achieve unity power factor operation by directly controlling its instanta- neous active and reactive power without any power-source voltage sensors. The proposed technique has two features. One is a method for sy

22、nthesizing a new switching table, different from the one0196-8904/$ - see front matter ? 2008 Elsevier Ltd. All rights reserved.doi:10.1016/j.enconman.2008.09.011* Corresponding author. Tel.: +33628944485.E-mail addresse

23、s: bouafia_aou@yahoo.fr (A. Bouafia), krim_f_ieee_org@yahoo.fr(F. Krim), Jean.Paul.Gaubert@univ-poitiers.fr (J.-P. Gaubert).Energy Conversion and Management 50 (2009) 6–13Contents lists available at ScienceDirectEnergy C

24、onversion and Managementjournal homepage: www.elsevier.com/locate/enconmanBy replacing (3) in (5):DP ¼ Ts L ðe2 aðkÞ þ e2 bðkÞÞ? Ts L ðeaðkÞ:vaðkÞ þ e

25、bðkÞ:vbðkÞÞDq ¼ Ts L ðeaðkÞ:vbðkÞ ? ebðkÞ:vaðkÞÞð6ÞFor controlling the active and reactive power there are six basic none zero rec

26、tifier voltages and two zero rectifier voltage vectors available as shown in Fig. 2. The change in active and reactive power depends on the choice of rectifier voltage vector. For the se- ven basic rectifier voltage vect

27、ors we obtain seven possible values of change in active and reactive power. As a result, there are differ- ent ways of selecting the corresponding switching state that con- trols the evolution in active and reactive powe

28、r. For i = (0, 1, 2,. . ., 6) change in the active and reactive power are given byDPi ¼ Ts L ðe2 aðkÞ þ e2 bðkÞÞ? Ts L ðeaðkÞ ? vai þ ebðkÞ ? vbiÞ

29、;Dqi ¼ Ts L ðeaðkÞ ? vbi ? ebðkÞ ? vaiÞð7ÞThe power-source voltage vector can be expressed on the stationaryreference frame a–b aseab ¼ eaeb? ?¼ffiffiffi 23r 1 ?1=2

30、?1=20 ffiffiffi 3 p =2 ? ffiffiffi 3 p =2? ? eaebec26 437 5 ð8ÞIn the (a, b) plane this vector can be represented asea ¼ E ? cosðhÞ; eb ¼ E ? sinðhÞ and keabk ¼ E ð9Þ

31、;where E is the RMS value of line to line power-source voltage and h is the angular position of the voltage source vector defined as?p=6 6 h 6 11p=6For the ac terminal voltage vector of the PWM rectifier, v, the typicals

32、pace vector representation for each switching state and its corre- sponding, va and vb values are shown in Table 1.The rectifier voltage vector in the (a, b) plane is given byvab ¼ va vb ½ ?T; kvabk ¼ ffif

33、fiffiffiffiffiffiffi 2=3 p ? vdc ð10ÞBy replacing (9) in (7)DPi ¼ Ts L keabk2 ? Ts L keabkðcosðhÞ ? vai þ sinðhÞ ? vbiÞDqi ¼ Ts L keabkðcosðhÞ ? vbi ?

34、 sinðhÞ ? vaiÞð11ÞThe normalise value of the change in active power and reactivepower can be represented asDPi ¼ DPiTs L keabk:kvabk ¼ keabkkvabk ? ðcosðhÞ ? ? vai þ

35、 sinðhÞ ? ? vbiÞDqi ¼ DqiTs L keabk:kvabk ¼ cosðhÞ ? ? vbi ? sinðhÞ ? ? vaið12ÞTo satisfy boost converter operation of PWM rectifier, the followingcondition is satis

36、fied: keabk=kvabk 6 sin p 3 ? ? . It can be seen from (12) that the change in reactive power has a sinusoidal waveform for all rectifier voltage vectors vi. The change in active power has a shifted sinusoidal waveform as

37、 shown in Figs. 3 and 4, respectively. The basic idea of the proposed DPC is to choose the best rectifier voltage vector among the seven possible vectors in order to main- tain the dc-bus voltage close to the reference v

38、alue, and to keep the unity power factor by controlling active and reactive power respec- tively. For this reason, the new switching table synthesis is based on the sign and magnitude of the change in active and reactive

39、 power for each sector. From Figs. 3 and 4, for each sector, the change in reactive power is positive for three rectifier voltage vec- tors, negative for three vectors, and zero for v0. The sign of the change in active p

40、ower is positive for four rectifier voltage vectors, negative for two or three vectors. For example, for sector one the sign of the change in active and reactive power are shown in Table 2. For each combination of hyster

41、esis output signals, Sp and Sq, rectifier voltage vectors are selected for sector 1, as shown in Table 3. For all sectors the proposed new switching table is represented in the following Table 4. To achieve voltage senso

42、rless operation of DPC for three-phase PWM rectifier, active and reactive powers are estimated using the switching state of the converter, the three-phase line currents, the dc-bus voltage, and the inductance of the reac

43、tors [6]. It can be de- rived as^ p ¼ L dia dt ia þ dib dt ib þ dic dt ic? ?þ vdcðSaia þ Sbib þ ScicÞ ð13Þ^ q ¼ ffiffiffi 3 p L dia dt ic ? dic dt ia? ?ð14Þ

44、;? 1 ffiffiffi 3 p vdc½ðSaðib ? icÞ þ Sbðic ? iaÞ þ Scðia ? ibÞ?Table 1Rectifier voltage space vectorsvi va vb vc vai vbi0 0 0 0 0 01 2/3vdc ?1/3vdc ?1/3vdc ffiffiffiffif

45、fiffiffiffi 2=3 p vdc 02 1/3vdc 1/3vdc ?2/3vdc 1= ffiffiffi 6 p vdc 1= ffiffiffi 2 p vdc 3 ?1/3vdc 2/3vdc ?1/3vdc ?1= ffiffiffi 6 p vdc 1= ffiffiffi 2 p vdc 4 ?2/3vdc 1/3vdc 1/3vdc ? ffiffiffiffiffiffiffiffi 2=3 p vdc 05

46、 ?1/3vdc ?1/3vdc 2/3vdc ?1= ffiffiffi 6 p vdc ?1= ffiffiffi 2 p vdc 6 1/3vdc ?2/3vdc 1/3vdc 1= ffiffiffi 6 p vdc ?1= ffiffiffi 2 p vdcFig. 3. Change in reactive power Dqi.8 A. Bouafia et al. / Energy Conversion and Manag