Looking Closer at DC Link Capacitors in Electric Vehicles
DC link capacitors are commonly used in power converters as an intermediary buffer between an input source to an output load that have different instantaneous power, voltages, and frequencies. In electric vehicle (EV) applications, DC link capacitors help offset the effects of inductance in inverters, motor controllers, and battery systems. They also serve as filters that protect EV subsystems from voltage spikes, surges, and electromagnetic interference (EMI).
Figure 1. Common uses for DC link capacitors in power conversion systems (source: Center of Reliable Power Electronics)
Take a look at the on-board charger (OBC) in Figure 2, which is responsible for charging the traction battery. Inside the OBC resides:
The AC/DC converter that converts alternating current (AC) from electric grid into direct current (DC) using rectification and Power Factor Correction (PFC)
An intermediate DC link circuit for energy buffering
The next stage DC/DC converter that adjusts the produced DC voltage to provide correct DC levels to the battery.
The DC link capacitor Cbulk is placed between the rectifier and DC/DC converter. Desired characteristics for the capacitor include:
High DC voltage rating: 300V to 500V
Very large capacitance: 200µF to 1500µF
Operating temperature range: -40℃ to +250℃
Low equivalent series resistance (ESR): < 1.5mΩ
High root mean square (RMS) current capacity
High mechanical ruggedness
To meet the large capacitance values, multiple capacitors or a capacitor array is required. We recommend using our high-capacitance StackiCap 1812-4040 250V-1.2kV 100nF-5.6µF X7R capacitors for such applications. The DC link capacitor must be also able to handle twice the line frequency. Therefore, common circuit arrangements include multilayer ceramic capacitors (MLCCs) connected in parallel with other capacitor technologies to achieve this.
Another EV subsystem where DC link capacitors are found is the inverter in motor drive circuits (shown in Figure 3). The inverter converts DC power from the battery to three-phase AC power to drive the traction motors during acceleration, and then converts AC power back to DC during braking. It also detects the motor’s speed and position and drives the insulated-gate bipolar transistor (IGBT) power stages.
In this subsystem, the DC link or smoothing capacitor Cs is placed in parallel between the DC (battery) and the AC (load) sides of the voltage inverter. The capacitor specifications are very similar to the previous OBC example, and therefore the same StackiCap X7R with high RMS current capacity is recommended. Due to the high capacitance requirements, small-sized MLCCs can be used together with film and aluminum electrolytic capacitors to integrate closer to the IGBT switching device and improve high frequency attenuation.
Given the high number of converters and inverters found in EV applications, selecting the right high-voltage, high-capacitance DC link capacitor is of great importance to the overall system success.
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Kendeil（肯德尔）金属化聚丙烯直流支撑（DC-Link）薄膜电容器选型指南
目录- Metallized Polypropylene D.C. Link Capacitors Metallized Polypropylene D.C. Link Capacitors Metallized Polypropylene D.C. Link Capacitors
型号- K36800102__K0T125,K36900491__K0Q125,K37111151__K0L065,K36900201__K0J072,K37800221__K0L065,K36111251__K0J120,K36401131__K0U265,K36121182__K0U335,K3350150000K0K152,K36161321__K0T120,K36800421__K0J145,K3318135100K0K152,K36251660__K0Q140,K36900112__K0T150,K36301680__K0Q225,K36201191__K0T125,K36201401__K0U175,K36301121__K0U180,K37800351__K0S064,K36161851__K0U230,K37151111_K0S064,K3311190100K0K152,K36900272__K1U230,K36251351__K0U265,K36600781__K0J140,K37151500_K0L050,K36800352__K0U335,K36111252__K1U335,K36800102__K0R175,K36600152__K0T140,K37141111_K0L076,K37151760_K0L065,K36121331__K0T125,K36111901__K0U125,K36301181__K0U230,K3311110200K0K152,K36251131__K0T140,K37111141__K0L065,K36361600__K0U130,K36111421__K0Q155,K36201151__K0Q175,K36251291__K0U225,K3390013200K0K152,K36111361__K0Q120,K3311180100K0K152,K36800491__K0Q125,K36361420__K0T130,K36800551__K0Q122,K37900151__K0L050,K36401700__K0T230,K36301420__K0Q140,K37400381__K0L065,K36301151__K0T230,K37 TYPE,K37131101_K0L065,K36161151__K0J145,K36201271__K0T175,K36800501__K0T080,K37900351__K0S064,K36161121__K0Q095,K36161151__K0J140,K36600651__K0Q095,K36301101__K0T180,K36121331__K0Q155,K3315150100K0K152,K36361151__K0U265,K36111921__K0T180,K36161171__K0J175,K36251211__K0U180,K36401101__K0U230,K36800501__K0Q122,K3327115100K0K152,K36361111__K0T265,K36600302__K0T230,K37111101__K0L050,K36121501__K0T130,K36111421__K0Q135,K36800751__K0Q175,K36121551__K0T130,K36201201__K0Q225,K37151950_K0L076,K36121221__K0J120,K36301820__K0T180,K36600102__K0Q140,K36800651__K0Q145,K36900152__K0T175,K3313160100K0K152,K36401240__K0Q140,K36900551__K0Q122,K36600651__K0J120,K36800112__K0Q225,K33 TYPE,K36161421__K0T175,K36121251__K0Q120,K36361121__K1U230,K36121251__K0Q125,K36161121__K0J120,K37111191__K0L076,K36111501__K0Q175,K36600112__K0Q140,K37800151__K0L050,K36900202__K0T230,K36111172__K0U230,K36900501__K0T080,K36111401__K0Q145,K37141560_K0L050,K36900102__K0R175,K36800272__K1U230,K36111731__K0T150,K36600481__K0J095,K36900352__K0U335,K37131131_K0L076,K36800471__K0Q122,K36201801__K0U335,K36600202__K0T140,K36900331__K0J117,K3370020200K0K152,K3320130100K0K152,K36121471__K0Q225,K36800331__K0J117,K36600242__K0T175,K36900112__K0Q255,K36111122__K1T230,K36201281__K0T175,K36161471__K0T175,K3313165100K0K152,K36900471__K0Q122,K36900102__K0T125,K37141860_K0L065,K36111331__K0Q120,K36121122__K0U230,K36800201__K0J072,K36111681__K0Q225,K37111231__K0S064,K37141131_K0S064,K36121102__K0T230,K36 TYPE,K36161601__K0T230,K36201601__K0U260,K36900421__K0J147,K37131700_K0L050,K37400601__K0S064,K3322120100K0K152,K36361880__K0T225,K37900221__K0L065,K36161900__K0J095,K36201101__K0Q120,K36301660__K0T120,K36401380__K0Q225,K36121271__K0Q120,K36201371__K0T225,K36201750__K0J120,K36800202__K0T230,K36251211__K0T225,K36111651__K0T125,K36161251__K0Q175,K36900651__K0Q145,K36121421__K0Q175,K36251151__K0T175,K36600821__K0J155,K37400261__K0L050,K36121102__K0U175,K37131101_K0S064,K36900501__K0Q122,K3335110100K0K152,K36121681__K0T180,K36800112__K0T145,K36900751__K0Q175,K36800152__K0T175
Knowles（楼氏电子）符合AEC-Q200标准的汽车级电容器选型指南
目录- AUTOMOTIVE GRADE CAPACITORS INTRODUCTION GENERAL AND TECHNICAL INTRODUCTION MLC CAPACITORS SM EMI FILTERS
型号- 1808JA250102JCTSP,1808JA250102JXTPY2,1808JA250102GJTSYS,2220YA300563KSTS3X,085J2500101JHT,1812Y1000334MXTE03,1812Y5000474KJTWS2,1206Y1000473KNT,1206Y0500224KXT---,2220JA250102JXTB16,1206Y1000103MXTE07,1808JA250102KJTSYX,0805Y1000103KST---,1210Y2000103KCT---,1808JA250102GJTS2X
Nippon Chemi-Con（黑金刚）铝电解电容器选型指南（英文）
描述- Since its establishment in 1931, Nippon Chemi-Con has tackled the development of a variety of electronic components, starting with aluminum electrolytic capacitors. As a supporter of this advanced electronic industry, Nippon Chemi-Con is very pleased to have contributed to its development.The spreading of globalization has brought about a new era to the electronics industry.
型号- ELXV500E□□221MJ25S,APXA6R3ARA101MF61G,APXD6R3ARA560ME61G,EKY-630E□□122ML40S,EMLA350ARA330MF80G,EKY-101E□□470MJC5S,EKXN401E□□151ML35S,EKZN6R3E□□272MK16S,EKXJ401E□□560MJ50S,EKYB160E□□562ML25S,EKXJ351E□□270MJ30S,EMVY100□RA472MLN0S,ELXY630E□□330MF15D,EKZH160E□□472ML25S,EMZA160□RA331MHA0G,ELXY160E□□821MJ25S,EGXF250E□□511MJC5S,ELBG250E □□ 352AK35S,ELXY350E□□272ML40S,EKZN100E□□222MJ25S,EGPA500E□□102MK35S,ELXV160E□□562ML40S,EMVL250ARA330MF60G,EKMQ101E□□2R2ME11D,APXJ2R5ARA122MH70G,EKYA100E□□122MH20D,EKWB451E□□820MM20S,ELBG250E □□ 922AMP1S,EKXJ251E□□330MJ20S,EKXL401E□□680MK35S,APSW250E□□471MHB5S,EKXN401E□□680MK30S,EMZA630□RA301MKG5S,EMVY6R3□RA682MLN0S,1,ELXZ630E□□331MJ30S,2,3,EKZN500E□□181MH20D,HHXJ250□RA681MJC5G,E MZE □□□ A RA □□□ M □□□ G,4,EKZE101E□□391MK40S,EGPA800E□□471MM20S,EMVH250□RA681MMH0S,ESRG350E□□471MK13S,EKMQ100E□□331MF11D,EMZA350□RA331MJA0G,6,EKYB6R3E□□682MK30S,EGXF500E□□241MJ16S,APSG200E□□331MH08S,EKYB250E□□151MF11D,EGXF250E□□751MJ16S,ELXZ250E□□821MJ25S,EKY-100E□□392ML20S,ELXV350E□□272MM35S,ELXV160E□□272MK35S,EKRG160E□□222ML15S,EMVY100□RA681MJA0G,EKXN451E□□820MK45S,EKY-160E□□682ML40S,ELZA250E□□272ML20S,EKHE451E□□101ML35S,EKZM350E□□222ML25S,ELXY500E□□331MJ30S,EGVD250E□□822MMP1H,EKZE100E□□222MK20S,APXE6R3ARA122MJA0G,EKYC350E□□512MM30S,EMVE100□RA222MKG5S,ELXZ6R3E□□682MM20S,EGPA500E□□122ML30S,EKZE500E□□331MJ25S,EKZN800E□□181MJ20S,EKY-350E□□222MLN3S,EKYB250E□□562MLP1S,EKYB800E□□122ML40S,EMLE6R3ARA101MF73G,EPAG401E□□101MU40S,ELXV500E□□561MK30S,EKZE630E□□182MM40S,EKWA421E□□560MJ50S,ELBG350E □□ 202AU25S,APXT100ARA121ME61G,EKXQ421E□□510ML20S,EGXF350E□□512MM35S,E KXL □□□ E □□ □□□ M □□□ S,EKY-800E□□121MJ20S,EKXL401E□□121MM30S,ELBG250E □□ 113AM40S,APXE4R0ARA561MH70G,EKYB100E□□123ML40S,EKXL421E□□680ML25S,520 EMHS250□RA332MLN0S,EGXF350E□□242MM20S,EMVL160ARA471MJA0G,EKRG160E□□332MM15S,ELXV800E□□102MM40S,EKZN630E□□182ML40S,APXH160ARA390MF61G,EKZH100E□□682ML25S,EKYB100E□□562MK35S,ELXZ630E□□101MJC5S,EKXJ421E□□560MK40S,EMLA250ARA100ME61G,APXJ2R5ARA821MF61G,EKHF451E□□101MK45S,EGPA500E□□821MU25S,EGPA800E□□681ML35S,HHXD630□RA220MF80G,EKY-350E□□122MK30S,E PAG □□□ E □□ □□□ M □□□ S,EPAG201E□□151MK30S,EKMQ100E□□472MK25S,EKZE250E□□331MJC5S,EMVJ500ARA3R3MD60G,EKZN800E□□471MK30S,ELXV500E□□180MEB5D,ELXV160E□□222MK30S,EKXJ221E□□121MU25S,ELXZ6R3E□□122MJ16S,EKMQ100E□□332MK20S,EMVE100□RA331MHA0G,ESRG500E□□102MM20S,EMLE350ARA221MJA0G,ELE-160E□□470ME11D,EKXN351E□□680MJ40S,ELXV100E□□331MH12D,ELXV500E□□181MJ20S,ELXV800E□□560MH20D,EKYA350E□□392MLP1S,EKXN421E□□560MM16S,EKZN350E□□182MK35S,EKXJ221E□□181MK40S,EKXJ421E□□330MK30S,EKZE800E□□331ML20S,EKY-160E□□103MM40S,ELE-250E□□101MF11D,ESMQ351VSN331MQ35S,NPCAP™-PSKSERIES,EMVH500□RA101MKE0S,EKYC250E□□561MJC5S,EKY-350E□□471MJ20S,EKZE6R3E□□561MHB5D,EKY-500E□□681MK30S,EGPA250E□□332MK40S,APXG250ARA100ME46G,EMZF250ARA331MJA0G,EKZE800E□□102ML40S,APSC100E□□391MHB5S,EKYC250E□□622MM25S,EKXJ221E□□331ML45S,ELXZ500E□□122ML30S,EKZN800E□□221MJ25S,EMHB630□TR331MKN0S,ELXZ350E□□271MH20D,HHXD630□RA330MJA0G,EKXN351E□□101MK40S,EMVY250□RA101MF80G,EKXJ421E□□820MMN3S,EMVL500ARA3R3MD60G,EKYC101E□□152MM40S,EKXL421E□□820MU35S,EKZM160E□□182MJ25S,EKXJ401E□□270MK20S,EKXN421E□□680ML20S,EKXN451E□□820MM20S,ELXV101E□□101MK20S,EKZE160E□□332MK35S,ELXZ100E□□471MH12D,EKXJ421E□□270MJ35S,EMZL500□RA221MJA0G,ELXV800E□□681ML40S,EGXF500E□□122MK35S,EMHL160□RA221MF80G,EKY-100E□□122MJ20S,ELXZ350E□□272MM30S,EGPA350E□□222MM25S,ELXV630E□□560MJC5S,EMZF100ARA330ME73G,ELXZ500E□□470MFB5D,EKWB401E□□680MK30S,ELE-101E□□220MHB5D,EGPD500E□□102ML20H,EMZE250ARA470MF73G,EMZE350ARA220MF73G,EKYC350E□□222ML20S,EKYB350E□□182MK30S,ELXZ250E□□331MH15D,LXVSERIES,EKZH160E□□332ML20S,EKYB100E□□222MJ25S,EKY-6R3E□□392MM15S,EKWB451E□□221MM45S,EKMQ201E□□331MM40S,GVDSERIES,EMLF350ARA1R0MD73G,EKZN800E□□271MJ25S,EKY-350E□□331MJ16S,ELXZ500E□□471MK20S,EKZN100E□□123MMP1S,EMVE250ARA220MF55G,SME,EKZM6R3E□□272MJ25S,EKYA250E□□471MJC5S,EKZN800E□□122ML40S,EKYC101E□□391MK30S,EKXJ251E□□470MJ25S,APSF6R3E□□821MF08S,SMH,ESMQ201VSN122MA30S,SMM,EKYC160E□□562MK30S,SMQ,EKLJ201E□□181MM25S,EKZH250E□□152MK20S,EKZE6R3E□□682ML25S,EKYA630E□□820MH15D,SMR,APXD2R5ARA221MF61G,APSG250E□□561MJB5S,EMLA350ARA221MJA0G,EGPD250E□□332ML20H,A PSE □□□ E □□ □□□ M □□□ S,EKZN250E□□681MJ16S,EMVY800□RA331MMH0S,EKY-630E□□681ML25S,EKZE630E□□820MH15D,EGXF350E□□332MM25S,APSG250E□□121MF08S,HHXC500□RA151MJC5G,EKXL451E□□390ML20S,EKHF421E□□221ML50S,HHXC630□RA820MJA0G,EKZE630E□□821MM25S,EGXF161E□□181MK35S,APXH2R5ARA221MF61G,EMVH500ARA100MF60G,PSC SERIES,ESMR401VSN221MP35S,EKXL451E□□820MM25S,EKHF451E□□101MM25S,EKLJ451E□□820ML40S,EMVY250ARA100ME55G,APXE4R0ARA471MH70G,AICHIP™-MHBSERIES,EKZH250E□□151MF11D,ELXZ160E□□272MK30S,EGXF630E□□681MU25S,AICHIP™-MZRSERIES,APXG160ARA271MH70G,EKMQ100E□□153MLP1S,APXH160ARA181MJ80G,HHXJ250□RA331MHA0G,APXH6R3ARA151MH70G,EMLE160ARA100MD73G,EMVJ250ARA330MF60G,EKZH6R3E□□682MK35S,ELXV800E□□271ML20S,APXG250ARA221MJA0G,EGPA800E□□561MM25S,EMHB250□RA821MKE0S,EKXL421E□□470MK30S,APSC2R5E□□152MHB5S,EKYA160E□□681MJC5S,APXK4R0ARA391MF61G,EMLA250ARA471MJA0G,EKMQ251E□□101ML25S,EMVH101□RA330MJA0G,ELBV350E□□103AM4
电子商城
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥0.5903
现货： 8,050
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor,
价格：￥2.3847
现货： 3,000
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥3.1658
现货： 2,500
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥2.1151
现货： 1,600
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥5.1648
现货： 500
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥3.6577
现货： 400
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥3.0556
现货： 380
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥4.9189
现货： 300
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥4.9189
现货： 250
品牌：Knowles
品类：Multilayer Ceramic Chip Capacitor
价格：￥4.9189
现货： 250
现货市场
服务
可定制DC风扇的尺寸范围：15mm~225mm；转速：≤16500 RPM；噪音：≥10.4dB，还可定制厚度、电压、风量、风压等参数，符合 RoHS 标准。
最小起订量： 1 提交需求>
可定制DC轴流风扇的尺寸范围：30*30*10~92*92*38mm；转速：1000~16500RPM；噪音≥19 db-A；最大风压范围：1.25~110.83mmH20；风量范围：0.05~186.87CFM。
最小起订量： 3000 提交需求>
授权代理品牌：集成电路
授权代理品牌：分立元件
授权代理品牌：接插件及结构件
授权代理品牌：部件、组件及配件
授权代理品牌：电源及模块
授权代理品牌：电子材料
授权代理品牌：仪器仪表及测试配组件
授权代理品牌：电工工具及材料
授权代理品牌：机械电子元件
授权代理品牌：加工与定制
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