三相电机的启动方法理论
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(19)
United
States
US
201700
93314A1
(12)
Patent
Application
Publication
(10)
Pub.
No.:
US
2017/0093314
A1
ESVELT
et
al.
(43)
Pub.
Date:
Mar.
30,
2017
(54)
METHOD
OF
STARTING
ATHREE-PHASE
(52)
U.S.
Cl.
BLOC
MOTOR
AND
MOTOR
DRIVER
CPC
................
H02P
6/20
(2013.01);
H02P27/08
USING
SAME
(2013.01)
(71)
Applicant:
Melexis
Technologies
NV,
Tessenderlo
(BE)
(57)
ABSTRACT
(72)
Inventors:
Michiel
ESVELT.,
Arnhem
(NL);
Robert
FILUSCH,
Erfurt
(DE)
(21)
Appl.
No.:
15/276,887
(22)
Filed:
Sep.
27,
2016
(30)
Foreign
Application
Priority
Data
Sep.
28,
2015
(GB)
...................................
1517124.2
Publication
Classification
(51)
Int.
Cl.
H02P
6/20
(2006.01)
H02P
27/08
(2006.01)
Method
of
starting
a
three-phase
sinusoidal
BLDC
motor,
comprising:
a)
determining
an
initial
position
of
the
rotor,
b)
applying
a
first
set
of
sinusoidal
energizing
signals
to
the
windings,
corresponding
to
a
set
of
sinusoidal
waveforms
shifted
apart
by
120°
and
240°
sampled
at
a
first
angle
(cp1);
and
maintaining
the
energizing
signals
for
allowing
the
rotor
to
move
to
a
first
angular
position;
c)
while
maintaining
the
energizing
signals,
monitoring
two
of
the
phase
currents,
and
determining
whether
a
predefined
condition
is
satisfied,
comprising
testing
whether
a
ratio
of
two
total
current
values
is
equal
to
a
predefined
value,
and
if
true,
to
repeat
steps
b)
and
c),
but
with
second
and
further
sinusoidal
energizing
signals
sampled
at
a
second
or
further
angular
position,
selected
from
a
limited
group
of
discrete
angular
positions.
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