全阶滑模观测器程序_基于全阶状态滑模观测器的异步电机转子磁链观测_杨淑英...
摘要
:
矢量控制的关键在于转子磁链定向。针对异步电机矢量控制中磁链观测问题,
设计了一种基于全
阶状态滑模观测器的增强型转子磁链观测方案。该方案将全阶磁链观测器和滑模观测器结合起来对异步电
机定子电流和转子磁链同时进行实时跟踪观测,
从而获得较为准确的转子磁链观测,
进而提高矢量控制时磁
场定向的准确性以及矢量控制的性能。研究表明该方案不仅算法简单,
而且具有较强的参数鲁棒性以及较好
的稳定性。仿真结果证明了该方案的分析和设计。
关键词
:
全阶状态滑模观测器;
转子磁链观测;
矢量控制;
异步电机
中图分类号
:
TM921
文献标识码
:
A
Induction
Motor
Rotor
Flux
Observation
Based
on
Full
Order
State
Observing
Involved
Sliding
Mode
Observer
YANG
Shu⁃ying
,
WANG
Wei
,
XIE
Zhen
,
ZHANG
(
School
of
Electrical
Engineering
and
Automation
,
Hefei
University
of
Technology
,
Hefei
230009
,
Anhui
,
China
)
Abstract:
Rotor
flux
orientation
is
crucial
to
the
strategy
of
vector
control
for
induction
motor.
An
enhanced
rotor
flux
observation
method
based
on
full
order
state
observing
involved
sliding
mode
observer
(
FOSOSMO
)
for
induction
motor
was
designed
to
address
the
rotor
flux
observing
issue
of
the
vector
control.
The
normal
full⁃order
flux
observer
was
combined
with
the
sliding
mode
observer
to
make
the
stator
currents
and
rotor
fluxes
observed
simultaneously.
Therefore
,
by
the
combination
design
,
an
improved
rotor
flux
observation
was
realized
,
and
the
accuracy
of
the
rotor⁃
flux
orientation
and
further
the
performance
of
the
driving
system
were
also
advanced
,
consequently.
Studies
show
that
the
observing
scheme
not
only
is
convenient
to
engineering
implementation
,
but
also
has
strong
parameter
robustness
and
satisfactory
stability.
Simulation
results
validate
the
analysis
and
design.
Key
words:
full
order
state
observing
involved
sliding
mode
observer
;
rotor
flux
observer
;
vector
control
;
induction
motor
作者简介:
杨淑英
(
1980-
)
,
男,
博士,
副教授,
:
yangsyhfah@163.com
ELECTRIC
DRIVE
2015
Vol.45
No.8
异步电机的低成本、
高可靠性,
使其在新能
源领域有着广泛的应用。随着新能源应用的迅
速发展,
对异步电机控制的要求也越来越高。矢
量控制,
尤其是转子磁场定向矢量控制是当前应
用广泛且经典的一种异步电机驱动控制策略。
而转子磁链获取的准确性直接影响到异步电机
磁场定向的准确性,
影响到异步电机矢量控制系
统的动态性能
[
1
-
2
]
。
由于异步电机转子磁链的直接测量十分困
难,
通常需要通过间接观测计算获得。根据所用
电机模型的不同,
有两种较为典型的转子磁链观
测计算方法,
即电流模型法和电压模型法
[
1
]
。其
中,
电流模型法受电机参数影响较大,
一般仅用
于低速阶段;
而电压模型法,
因其存在积分运算
问题,
一般用于中高速运行阶段
[
3
]
。为了克服直
接电压或电流模型法存在不足以获得更好的转
子磁链定向效果,
基于全阶观测器的转子磁链观
测方案是近年来广为关注的研究热点问题。文
3
网络出版时间:
2015-08-24 10:28:26
网络出版地址:
http://www.cnki.net/kcms/detail/12.1067.TP.20150824.1028.002.html
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