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文檔簡(jiǎn)介
Industrial
Solutions
and
ServicesIndustrial
Solutions
and
ServicesSiemensIndustrialServices交交變頻與交直交變頻器的對(duì)比Roland
GebhardYour
Success
is
Our
GoalBefore
lookingat
the
different
factors,
affectingthe
selection
of
the
optimumdrive
system,
lets
first
have
a
look
onto
the
drive
systems.Acc.
to
our
understanding,
the
drive
systemdoes
not
only
consist
of
the○
converter,○
its
control
unit
and
the○
motor,but
also
comprises
the○
circuit
breaker
and
the○
converter
transformer.Additionally,
also
the○
gear
box
andthe○
whole
rolling
mill
standhaveto
be
included.When
we
want
to
find
out
the
optimumdrive
solution
fora
certain
mill
application,
we
have
to
take
into
account
various
requirements
fromdifferent
aspects:○
from
the
rolling
process○
from
the
required
performance○
from
the
communication
(open
and
standardized
to
meet
your
requirements
andto
be
prepared
for
supplements
realized
later,
high
performance
in
order
to
achieveafast
data
exchange
between
the
drive
and
the
automationsystem)○from
the
line
side
(overall
efficiency
influences
the
operating
costs)○
and
last
but
not
least
from
the
economics
(reliability
andtheavailability
directly
influence
the
downtimes
and
therefore
your
profit,
high
reproducibilityand
long-term
stability
are
necessary
for
continuouslygood
product
quality,
ensured
by
using
fullydigital,
highperformance
control
units)Finding
the
optimummeans
to
find
a
drive
system,
which
of
course
fulfills
all
requirements
beingdefined
from
the
rolling
process,
but
onlyneeds
aminimumbudget.E.g.
if
we
consider
a
certain
power
and
speed,
the
selection
of
the
motor
type
is
mainly
influenced
by
the
required
fieldweakening
range
and
the
overload
demands.
For
high
overload
requirements
and
large
field
weakening
ranges,
the
synchronous
motors
minimizeboth
the
motor
and
the
converter
size.選擇傳動(dòng)裝置時(shí)應(yīng)考慮的因素~
~M3~交交變頻交直交變頻直聯(lián)式電機(jī)內(nèi)裝式電機(jī)RealizationIndustrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServicesBefore
lookingat
the
different
factors,
affectingthe
selection
of
the
optimumdrive
system,
lets
first
have
a
look
onto
the
drive
systems.Acc.
to
our
understanding,
the
drive
systemdoes
not
only
consist
of
the○
converter,○
its
control
unit
and
the○
motor,but
also
comprises
the○
circuit
breaker
and
the○
converter
transformer.Additionally,
also
the○
gear
box
andthe○
whole
rolling
mill
standhaveto
be
included.When
we
want
to
find
out
the
optimumdrive
solution
fora
certain
mill
application,
we
have
to
take
into
account
various
requirements
fromdifferent
aspects:○
from
the
rolling
process○
from
the
required
performance○
from
the
communication
(open
and
standardized
to
meet
your
requirements
andto
be
prepared
for
supplements
realized
later,
high
performance
in
order
to
achieveafast
data
exchange
between
the
drive
and
the
automationsystem)○from
the
line
side
(overall
efficiency
influences
the
operating
costs)○
and
last
but
not
least
from
the
economics
(reliability
andtheavailability
directly
influence
the
downtimes
and
therefore
your
profit,
high
reproducibilityand
long-term
stability
are
necessary
for
continuouslygood
product
quality,
ensured
by
using
fullydigital,
highperformance
control
units)Finding
the
optimummeans
to
find
a
drive
system,
which
of
course
fulfills
all
requirements
beingdefined
from
the
rolling
process,
but
onlyneeds
aminimumbudget.E.g.
if
we
consider
a
certain
power
and
speed,
the
selection
of
the
motor
type
is
mainly
influenced
by
the
required
fieldweakening
range
and
the
overload
demands.
For
high
overload
requirements
and
large
field
weakening
ranges,
the
synchronous
motors
minimizeboth
the
motor
and
the
converter
size.選擇傳動(dòng)裝置時(shí)應(yīng)考慮的因素Points
of
influence經(jīng)濟(jì)因素Drive
system投資成本運(yùn)行成本~
~M3~可靠性維護(hù)成本控制系統(tǒng)的因素給定值設(shè)定點(diǎn)轉(zhuǎn)矩的質(zhì)量提升循環(huán)周期通訊開放式標(biāo)準(zhǔn)化程度運(yùn)行過程功率速度過載轉(zhuǎn)矩截繩對(duì)電網(wǎng)的影響Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServicesCos諧波總體效率電壓降哪一種方案最優(yōu)?SM150交直交變頻器SIMOVERT
D交交變頻器M3~M3~Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices哪一種方案最優(yōu)?特點(diǎn):?電機(jī)定子繞組每相對(duì)應(yīng)一套反并聯(lián)可控硅橋?能量直接轉(zhuǎn)換(無直流環(huán)節(jié))?最大輸出頻率約為電網(wǎng)側(cè)頻率的45%?適用的電機(jī)功率范圍為:
1
MW至20
MW或更高?風(fēng)冷-維護(hù)簡(jiǎn)單M3~Cycloconverter功率:Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices10.4
MVA/12脈沖過載:200%
/
60s效率:99,3
%哪一種方案最優(yōu)?Cycloconverter缺點(diǎn):優(yōu)點(diǎn):?高過載能力?有無功功率消耗?非常簡(jiǎn)單的觸發(fā)單元?會(huì)產(chǎn)生諧波?高效率(無直流環(huán)節(jié))?非常簡(jiǎn)單的電路和機(jī)械結(jié)構(gòu)?非常堅(jiān)固并可靠維護(hù)簡(jiǎn)單?在低頻(速)段也有大電流輸出Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices哪一種方案最優(yōu)?Sinamics
SM150M3~特點(diǎn):?
多電平交直交變頻技術(shù)?有源前端?10
MVA的功率?電壓等級(jí)3300
V?頻率0–76,5
Hz?水冷容量:Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices10
MVA過載:110%
/
20s效率:98
%哪一種方案最優(yōu)?Sinamics
SM150?優(yōu)點(diǎn):?對(duì)電網(wǎng)的不良相應(yīng)?。o無功功率,極低的諧波)?缺點(diǎn):?比較復(fù)雜(與交交變頻相比)?較低的過載能力?較大的占地面積Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices哪一種方案最優(yōu)?24
IGCTs,36二極管自換向二次能量轉(zhuǎn)換較復(fù)雜的變頻器低0
–
76,5
Hz1
x特殊變壓器1,0較高較大重要一般使用在10
Hz成本重要交交變頻交直交變頻對(duì)提升機(jī)的影響72個(gè)可控硅網(wǎng)側(cè)換向只有一次能量轉(zhuǎn)換簡(jiǎn)單的直流技術(shù)高,可達(dá)到260%,5秒0
–
22,5
Hz6
x標(biāo)準(zhǔn)變壓器與速度有關(guān)較低較少功率部分Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices0速時(shí)的轉(zhuǎn)矩頻率變壓器功率因數(shù)投資成本占地面積哪一種方案最優(yōu)?水冷96
%5-10年前開始使用的IGCT新技術(shù)空氣冷卻較簡(jiǎn)單能量消耗空氣風(fēng)冷99
%1960開始使用的可控硅自1980開始使用在提升機(jī)上冷卻Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices效率開斷元件可用性交交變頻交直交變頻器對(duì)提升機(jī)的影響MMMM增大電網(wǎng)短路容量采用12脈動(dòng)交交變頻器靜態(tài)VAR補(bǔ)償裝置動(dòng)態(tài)無功功率補(bǔ)償和諧波濾?強(qiáng)勁的電網(wǎng)“(SVC)波器減少減少諧波減少減少電壓降,和諧波和無功功諧波,無功功諧波電壓率損耗率損耗以及電壓降其他Compensation
forCycloconverterIndustrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
Mine
WindersSiemensIndustrialServices純凈水回路(閉路循環(huán))用去離子水作為制冷劑清潔的工業(yè)水回路由法蘭連接到用戶的系統(tǒng)清潔的工業(yè)循環(huán)水可以用作制冷劑內(nèi)部管路全由不銹鋼制成根據(jù)不同的變頻器數(shù)量,有四種不同形式的冷卻單元可供選擇其他Cooling
forSinamics
SM150Industrial
Solutions
and
Services
Your
Success
is
Our
GoalI&S
IS
E&C
Service
for
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