中国电机工程学报
中國電機工程學報
중국전궤공정학보
Proceedings of the CSEE
2015年
18期
4762-4770
,共9页
廖金国%花为%程明%朱发旺%王宝安
廖金國%花為%程明%硃髮旺%王寶安
료금국%화위%정명%주발왕%왕보안
占空比%电流滞环控制%开关周期%环宽%永磁同步电机
佔空比%電流滯環控製%開關週期%環寬%永磁同步電機
점공비%전류체배공제%개관주기%배관%영자동보전궤
duty cycle%current-hysteresis control%switching period%hysteresis band%permanent magnet synchronous motor (PMSM)
电流滞环控制因其具有高动态性能且不需要任何负载参数的信息,是最简单的三相永磁同步电机驱动系统电流控制方法。然而,传统固定环宽的滞环控制方式存在开关频率不定、电流畸变程度大等缺点。该文提出一种新型变占空比电流滞环控制策略,当采用 id=0方式控制时,可以实现开关频率恒定、电流畸变小和高效率。其中,一个开关周期内开通与关断时间可以通过瞬时相反电动势、交轴电感、滞环环宽和参考电流与实际电流的偏差来确定。此外,三相电枢绕组的电压与电流之间彼此独立。仿真和实验结果验证了所提控制策略的有效性。
電流滯環控製因其具有高動態性能且不需要任何負載參數的信息,是最簡單的三相永磁同步電機驅動繫統電流控製方法。然而,傳統固定環寬的滯環控製方式存在開關頻率不定、電流畸變程度大等缺點。該文提齣一種新型變佔空比電流滯環控製策略,噹採用 id=0方式控製時,可以實現開關頻率恆定、電流畸變小和高效率。其中,一箇開關週期內開通與關斷時間可以通過瞬時相反電動勢、交軸電感、滯環環寬和參攷電流與實際電流的偏差來確定。此外,三相電樞繞組的電壓與電流之間彼此獨立。倣真和實驗結果驗證瞭所提控製策略的有效性。
전류체배공제인기구유고동태성능차불수요임하부재삼수적신식,시최간단적삼상영자동보전궤구동계통전류공제방법。연이,전통고정배관적체배공제방식존재개관빈솔불정、전류기변정도대등결점。해문제출일충신형변점공비전류체배공제책략,당채용 id=0방식공제시,가이실현개관빈솔항정、전류기변소화고효솔。기중,일개개관주기내개통여관단시간가이통과순시상반전동세、교축전감、체배배관화삼고전류여실제전류적편차래학정。차외,삼상전추요조적전압여전류지간피차독립。방진화실험결과험증료소제공제책략적유효성。
ABSTRACT:Current-hysteresis-control (CHC) is the simplest strategy used for armature currents control of three-phase permanent magnet synchronous motor-based drive systems due to the advantages of excellent dynamic performances and having no need of load parameters. However, the switching frequency of the conventional CHC with a fixed hysteresis-band is variable and the harmonic ripples of armature currents are usually considerable. In this paper, a novel variable-duty-cycle current-hysteresis-control (VDC-CHC) strategy under the classicid=0 control method is proposed to achieve a constant switching frequency, a lower current ripple and a higher efficiency than conventional CHC. The turn-on and turn-off time in a switching period are obtained according to the instantaneous phase back-EMF, q-axis inductance, hysteresis band and phase current deviation between referenced and real values. In addition, the voltages and currents of three phase windings are independent. Both the simulations and experimental results confirm the effectiveness of the proposed strategy.