Crocus Current Sensors Offers Solar Inverters High Accuracy, High Bandwidth and Low Noise
Increasing demands from electric cars, renewable energy, and the smart grid are driving more and more demand in the solar energy market. As the market skyrockets, the focus is on the increased efficiency, reliability, and safety of high-performance inverters.
“Addressing the challenges of effective power management in grid-level solar power integration cannot be underestimated,” notes Power Electronics News. “According to Precedence Research, the global solar inverter market was $8.12 billion in 2021 and is expected to exceed $16.88 billion by 2030. The growing demand for green energy is driving the global solar inverter market to curb the impact of carbon dioxide and other greenhouse gas emissions.”
To accomplish this, photovoltaic (PV) solar-cell systems convert light into DC power which then is converted into AC power. This conversion is critical, as is the application of maximum power-point tracking (MPPT), which maximizes energy extraction from the solar cells. DC intermediate power is sent to an inverter for AC power generation before entering the grid. MPPT on the DC input side and inverter-side anti-islanding protection (a safety feature that prevents grid-tied inverters from continuing to feed power into the grid after a power outage) are key functions.
Solar Inverters
Today, these PV systems often employ solar inverters, which are quickly becoming the preferred choice for many solar panel system owners. These inverters employ pulse width modulation (PWM), which uses pulses of varying width to control the output voltage of the inverter. The width of these pulses is determined by the desired output voltage, while the frequency is determined by the desired output frequency. Solar inverters are efficient, using much less energy than other types of inverters. They also produce clean, sinusoidal AC waveforms, which are more reliable and less expensive. There are multiple solar inverter topologies:
Central inverters are the simplest, with all panels connected to a single inverter.
String inverters are the most common, converting from a string of solar panels.
Microinverters are smaller inverters installed at each solar panel. These increasingly popular inverters allow each panel to operate independently, improving performance and efficiency.
Power optimizers are a hybrid of string inverters and microinverters. They are installed between the solar panels and the string inverter, improving performance. In addition, DC-DC optimizers are module-level power electronics added to the system to optimize the DC produced by each solar panel before sending it to the inverter. It works by individually optimizing the output of each solar panel, using the MPPT algorithm, which can help to improve the overall efficiency of the solar system.
Accurate MPPT readings are critical in PV systems, and that job falls on current sensors. Not only do sensors need to accurately measure the current flowing through the panels, but they also need to be stable over temperature changes, especially because these systems are designed to face extreme weather types so that the inverter can adjust the voltage to maximize MPPT. Sensors are also responsible for fault detection, such as short or open circuits, and protect against overcurrent conditions. Finally, sensors enable the proper use of advanced circuit management so systems perform at an optimum level. All of this must be tightly monitored and controlled, as each part of a power conversion circuit impacts the other. There are several ways to monitor the current in a circuit. Legacy approaches include shunt-based solutions, which offer dynamic performance and linearity, but struggle with high currents, leading to thermal issues. Shunts are not isolated, contact-based systems, leading to potential failures. Hall sensors are more sophisticated, but lack accuracy and bandwidth – both critical factors in the inverter system. In addition, their physical size and weight make them problematic in any situation where space is at a premium. Today, superior-performing TMR sensors are replacing both Shunt and Hall. Their accuracy, bandwidth, and price are ideal for solar inverter topologies, including micro-inverters and DC-DC optimizers. In micro-inverters, the current sensor is typically located on the same PCB as the inverter’s power electronics, allowing the sensor to measure the current directly from the solar panels. In DC-DC optimizers for string inverters, the sensor is typically located on a separate PCB, so it can measure multiple solar panels. In both cases, Crocus Technology’s current sensors are well-suited, as they offer multiple advantages, including:
High accuracy: Crocus Technology’s current sensors are accurate to within 1%FS over temperatures -40 to 125 degrees C, essential for ensuring that panels are operating efficiently under all conditions.
High bandwidth: Crocus Technology’s current sensors have a bandwidth of up to 1 MHz, enabling them to accurately measure the high-frequency currents of the fastest-changing solar panels.
Low noise: Crocus Technology’s current sensors feature 10x lower noise than Hall, ensuring accurate measurement in the mA range maximizing MPPT.
Isolation: Crocus Technology’s current sensors provide galvanic isolation between the high-voltage current sensing circuit and the low-voltage control circuit, which protects inverter and optimizer damage in the event of a fault in the high-voltage circuit.
As the market for solar power inverters increases, the competition becomes stiff. Today, grid regulations require strict signal and offset measurement, and current sensors with high bandwidth and good offset will deliver the most accurate measurement. In solar inverters, efficiency is key and current sensors are a critical component to enable high efficiency. Crocus Technology’s current sensors are today’s popular choice for use in solar inverters and optimizers.
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本文由玄子转载自Crocus Technology News，原文标题为:Solar Sensors，本站所有转载文章系出于传递更多信息之目的，且明确注明来源，不希望被转载的媒体或个人可与我们联系，我们将立即进行删除处理。
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Littelfuse（力特）应用于太阳能领域的电路保护产品选型指南
描述- With over 60 million devices installed in photovoltaic power systems, Littelfuse understands the global challenges of the solar market. Littelfuse offers numerous circuit-protection products that are uniquely suited to protect the equipment and systems subject to the harsh environments of standard photovoltaic installations.
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工业应用手册
描述- ROHM公司提供高质量的半导体和电子元件，致力于支持工业设备的技术创新。公司通过垂直整合的生产系统，确保产品的高质量、高可靠性和稳定供应。ROHM的产品涵盖从消费电子和IT设备到汽车和工业系统的广泛市场。公司还提供产品长期供应计划，以满足工业设备市场对长期供应的需求。ROHM通过结合电路设计、布局和制造工艺技术，开发出具有卓越性能的产品，并提供全面的设计支持和服务。
型号- BD52W04G-C,SH8KXX SERIES,BD900N1W,QH8KXX SERIES,BM2SCQ123T-LBZ,R6007RND3,BD900N1G-C,BD2311NVX-C,RBR2VWM60A,BD9XXN1 SERIES,BD933N1,RFS SERIES,RBR1VWM40A,BM2SC12XFP2-LBZ,CSL1901,BP3622,BD14210G-LA,BP3621,SCT4013DW7,BM2P06XMF-LBZ,R6035VNX3,RB068VWM150,R60XXRNX SERIES,CSL1901DW,BD950N1WG-C,BM2P060LF-Z,BM2LE160FJ-C,BV1LE080EFJ-C,BM2SC123FP2-LBZ,SH8MC5,SCT4018KW7,RB168VWM-40,RFL SERIES,SCT4018KE,BD52W03G-C,SCT4026DE,BM2SCQ121T-LBZ,LTR10 SERIES,RB168VWM-60,BD48W00G-C,RBR1VWM30A,SH8MB5,SCT4018KR,SCT4026DR,R6035VNX,BM2P061MF-Z,BM6437X,CSL1901UW,BM64378S-VA,BD900N1EFJ-C,D950N1EFJ-C,SCT4013DE,BM2P063MF-Z,R6024VNX3,SCT4013DR,BD7XXL05G-C,R60XXVNX SERIES,BD950N1,RB068VWM100,RFL,SH8KXX,CSL1901VW,RFS,BD14215FVJ-LA,BM6437X SERIES,PSR,RB168VWM-30,SCT4036KW7,R6004RND3,BM2LE040FJ-C,RF05VAM2S,BD750L05G-C,BM2SC122FP2-LBZ,BD933N1G-C,BD900N1,BM2P061LF-Z,BD52W02G-C,BM64377S-VA,BD933N1EFJ-C,QH8MB5,REFLD002,R60XXRNX,RBLQ2VWM10,PSR500,SCT4026DW7,BV1LE040EFJ-C,RFS30TZ6S,BD900N1WG-C,CSL1901 SERIES,QH8MC5,CSL1901YW,BV1LEXXXEFJ-C,RFL60TZ6S,R6013VND3,PSR SERIES,R6009RND3,R6077VNZ,BM2SCQ122T-LBZ,RFL60TS6D,S WAVE B-01,PSR400,BD933N1WG-C,BD52W01G-C,RB068VWM-60,R WAVE B-01,REFPDT007-EVK-001B,REFPDT007-EVK-001A,REFPDT007-EVK-001C,RFS30TS6D,LTR10,BD950N1WEFJ-C,BM2SC124FP2-LBZ,QH8MX5 SERIES,QH8KB5,R6013VNX,QH8KB6,RBR2VWM30A,BM2LE250FJ-C,BD2311NVX-LB,RGWXX65C SERIES,RGW00TS65CHR,SH8MX5 SERIES,SCT4045DW7,BV1LE250EFJ-C,SCT4036KE,QH8MX5,SCT4045DE,R6024VNX,BM2SCQ124T-LBZ,R6055VNX,R6018VNX,R6055VNZ,SCT4045DR,RGW80TS65CHR,QH8KC6,CSL1901MW,QH8KC5,R60A4VNZ4,RB168VWM150,BD7XXL05G-C SERIES,BD52W06G-C,SCT4062KR,BD48HW0G-C,RBR2VWM40A,BD1421X-LA SERIES,BD9XXN1,R6077VNZ4,BM1390GLV-Z,RGWXX65C,RBR1VWM60A,REFLD002-1,QH8KXX,REFLD002-2,R6055VNX3,BD52W05G-C,BM2P06XMF-LBZ SERIES,SCT4036KR,RFL30TS6D,BD900N1WEFJ-C,BM2LEXXXFJ-C,RFS60TS6D,BD733L05G-C,BD933N1WEFJ-C,SCT4062KE,BM2SC12XFP2-LBZ SERIES,BM64374S-VA,GNE1040TB,BD950N1W,BD725L05G-C,BD933N1W,BD730L05G-C,BM2SC121FP2-LBZ,PSR350,SH8KC6,BM64375S-VA,SH8KC7,BM2LE080FJ-C,SH8MX5,SCT4062KW7,R60XXVNX,PSR100,BV1LEXXXEFJ-C SERIES,RB168VWM100,BD950N1G-C,RGW60TS65CHR,R6055VNZ4,BM2P060MF-Z,RLD90QZWJ,RFS60TZ6S,RLD90QZWD,RLD90QZWC,SH8KB7,RLD90QZWB,SH8KB6,RB068VWM-40,RLD90QZWA,RB068VWM-30,BV1LE160EFJ-C,RLD90QZW8,RFL30TZ6S,BM2LEXXXFJ-C SERIES,RLD90QZW5,BD1421X-LA,PSR330,RLD90QZW3
3PEAK高性能隔离器
描述- 本文介绍了3PEAK公司的高性能隔离器产品，包括其技术特点、应用领域和安全性认证。产品具备高隔离电压、低噪声、高精度等特点，适用于工业控制、通信、医疗、汽车等领域。同时，文章还详细阐述了安全认证的重要性，以及3PEAK产品在安全标准方面的合规性。
型号- TPL51200,TPA7836,TPT772X,TPL920,TPL930,TPAFE0808,TPA626,TPL51206,TPT7720,TPT7721
思瑞浦（3PEAK）隔离产品选型指南
目录- 公司简介 DIGITAL ISOLATOR NAMING RULE amd ISOLATED SYSTEM SOLUTION DIGITAL ISOLATOR & ISOLATED INTERFAC 数字隔离器 隔离CAN/485/I2C ISOLATED PRODUCT ADVANTAGES and APPLICATIONS Enhanced Isolator Reinforced Isolator Enhanced Isolated RS485 Automotive Enhanced Isolator Isolated CAN Transceiver Isolated I2C Isolators
型号- TPT72616,TPT72617,TPT71050,TPT773X,TPT771X,TPT774XQ,TPT7730,TPT772XQ,TPT7731,TPT7710,TPT 7XYZFQ— ABCR,TPT7481,TPT7482,TPT7722,TPT7821,TPT7822,TPT776X,TPT774X,TPT71044,TPT784X,TPT772X,TPT71042,TPT782X,TPT784XQ,TPT7760,TPT7761,TPT7487,TPT7740,TPT7762,TPT7488,TPT7741,TPT7763,TPT7840,TPT7720,TPT7742,TPT7841,TPT782XQ,TPT7721,TPT7820,TPT7842
电流传感器SCB-CAS/CASR/CKSR
描述- 该资料介绍了SCB-CAS/CASR/CKSR系列电流传感器，适用于电子测量直流、交流、脉冲等电流。这些传感器具有闭环（补偿）多量程特性，电压输出，单电源供电，紧凑型PCB安装设计。它们具备低温度系数、良好的dv/dt抗扰度、减小的高度、参考引脚双模式（Ref IN和Ref OUT）以及扩展的单极性测量范围。
型号- SCB-15CKSR,SCB-50CASR,SCB-25CASR,SCB-75CKSR,SCB-CASR,SCB- CASR,SCB- CASR SERIES,SCB-25CAS,SCB-CAS,SCB-50CKSR,SCB-15CAS,SCB-15CASR,SCB-50CAS,SCB-CKSR,SCB-25CKSR
Suncall Corporation Taps Crocus Technologies TMR Sensor Technology to Develop Advanced Sensors for EV Industry
Suncall’s collaboration with Crocus is a significant milestone in the development of the magnetic current sensor. By implementing TMR for current detection applications in devices with high currents, Suncall is breaking new ground in the industry, paving the way for further innovation and growth.
Only TMR Current Sensors Can Enable Efficient Industrial and Automotive Applications
Today, a wide variety of industrial and automotive applications are demanding higher efficiency which impacts many design decisions including the current sensing requirements. The demands are so dramatic that it may be that existing magnetic-based solutions will be obsolete by 2030. These applications demand wide band gap (WBG) power devices pushing the performance requirements for current sensing.
太阳能（PV）应用产品
型号- LFPXV,SPD2 PV SERIES,SPD2 PV,SPFJ,SPF,400PV,IDSR SERIES,SPXV SERIES,LPHV SERIES,400PV SERIES,SE-601 SERIES,SPXC SERIES,IDSR,LFJ1000,KLKD,PSR SERIES,PSX SERIES,EL731 SERIES,EL731,SPFJ SERIES,LFJ1000 SERIES,SPFI SERIES,KLKD SERIES,LFXV15,SPXI,SPXI SERIES,SPXC,PSR,SPXVS,SPNH,LFPXV SERIES,LPHV,LFXV15 SERIES,PSX,SPNH SERIES,SPF SERIES,SPXV,SE-601
产品和解决方案
型号- 30 S4,SESI 9.1,731P,TEV,SCT,SESI 18,SESI 15,TEP SERIES,TEV SERIES,SESI 14,AS31,DLEF 42,C4N SERIES,CTS23,KM 111,CM12,C4E,CTS21,132P,CMC 22,ST79 SMD,253P,KM 915,FP-5-200,CT79 SMD,KM 78,KM 311-KM 21,OP SERIES,C4N,CEC,CA 158,CTC42,CTS41,744G,SC SERIES,SESI 22,CNC5X,PMR 64,CER,SPE0844S,CTC3E,NHB SERIES,CTS33,DBIT,CTS32,CMC 14,CA 152,CMC 15,KM 501-601,KM 82,MML-M SERIES,CMC 17,XBL SERIES,CMC 18,MML-C SERIES,KM 711-KM 7,CK SERIES,842P,SESI 32,FLYT,PMR 4,CT79E,MTLM 1234 MIL,PMA 64 T,C SERIES,TXR,CNC SERIES,CFS,TCK SERIES,KM 111 S,KM 111 T,MSCI 10000,CS SERIES,CE,710P,CF,SV,A 64 S4,CTC21,MIL-PRF-83421/06,HTSE 47 SR,MPCI 10000,CNC3X,ST79 HT200,CTS1M,R SERIES,HCESC,KCP 4 UA T,CTS4,CTS1,CTS13,MRA HT,734G,MKT,P.P.S 16 R,CFS SERIES,CNC5X SERIES,MKRS,MPA HT,SHD,CA 20,735P,PM 90,CA 30,PM 94,MP-4A,ESI 01,560P,SHR,KM 94S,CTC4,PM 980,CTC3,700P,HVD SERIES,XBL,PMA 64,PM 98,CM 04,PM 96,KPF-9,MPCI 12000,TKD,CA 40,WT83,CEC SERIES,FP- 60-700,682P,HVR SERIES,R 73 A,MPCI 233 H01,GDT 15,PM 720,DSCC 10004,810P,442P,430P,684P,SHR-SERIES,BIK SERIES,FL SERIE,CT79 HT200,KM 90,AP31,DMC 22 XXX 1WR,R 73 R,KM 97,PP 78 SERIES,C4E SERIES,KM 94,CT4E,CL SERIES,PM 730,TCF SERIES,BIK,431P,CA 15,SH SERIES,859P,CA 2,CA 1,MP4,PM 7,CT 91,HVA,AP41,HVD,SV SERIES,PM 90 S,CT 05 XXX 231 W,PM 948 S,MML-D SERIES,WS83,MML-D,MML-C,CTC4RSE,FLYT SERIES,HVR,LA SERIES,PM 948,CCM 6,CT79,MML-M,CCM 5,CCM 4,PM 50,TBC SERIES,A 74 S4 T,MPCI 20000,SPE0844,HTSE XX WR,BPM SERIES,PM 907 S,ST79,SHD-SERIES,KM 311-KM 21 T,PM 60,CNC,KM 50-60,880P,DCL-41,ESI 7,CT9E,KM 711-KM 7 T,882P,410P,CNR,CTC42E,CMR 07,TKD SERIES,MIL 39006/22,MKT S,CMR 04,CT 01 100 261 X,DSCC 93026,TCL SERIES,MIL 39006/25,CT 08 200 221 PR,PMR 4 T,TCH SERIES,C3N SERIES,CF SERIES,UBL,CN SERIES,PR 3 A,PM 96 T,PM 96 S,DCL-50,PRA HT,CTP42,UBZ,RA ...,KM 501-601T,DFC-11,FP-7-300,CEC5X,UBL SERIES,WRFT 4X,CCM 20,PP 3 M,HT SERIES,MSCI H01,CER SERIES,CCM 25,CMESC,PP 318,KPF,218P,860P,CEC5X SERIES,SMT47,CT79E HT200,PP 78,PM 907,PP 3 A,BI 73 R,PR 3 M,TBC,P.P.S 16 A,C3E SERIES,HVA SERIES,SBIT,KP-3C,CT 15 200 231 WR,KM 50-60T,DCL-14,TCN8X,P.P.S 13,HTSE XX SR,CTC21E,CTP21,TCN8X SERIES,PM 12,MPCI 233,TCF,TCE,TCH,TCL,DCL-23,TCK,TCN,BPM,CTS21E,TCM,PP 418,A 64 S4 T,FP-1-400,CNC3X SERIES,TCX,NHB,DCL-6,GDT 91,CMESC SERIES,MSCI 20000,TCM SERIES,CTS41RSE,CH SERIES,FP-11-500,PMR 64 T,30 S4 SERIES,CE SERIES,709G,CP SERIES,CT4,MPCI H01,TEF SERIES,PM 94 S,730P,CT9,730G,A 74 S4,FP-8C-1500,FP-4-150,CNR SERIES,C3E,TEF,UBZ SERIES,PS ...,CT 10,SCT SERIES,TEP,CT79E SMD,C3N,BI 73 A
Littelfuse（力特）温度传感器产品选型指南（英文）
目录- Temperature Sensing Leaded Thermistors Thermistor Probes and Assemblies Leaded RTDs/Digital Temperature Indicators
型号- USP6998,PS,PT,USP7765,HM,LR,PW,USP7766,PX,USP7806,USP10973,USP10976,USP12755,USP10975,USP14579,USUR1000,USP10972,USP12838,USP3121,USP10978,USP12836,USP10979,USP12837,MM,USW2295,USP7537,AC,USP16673,USP5510,USW3866,USW2299,RA,RB,SETP™,USP4261,USP18967,USP17957,USP7570,USP4065,BC,JL,JM,USP9728,USP3986,USP8798,PPG,USP10680,USP11493,USP11491,USP11492,SB,USW2883,SC,USP14439,USP10997,WM,KC,SM,TO-220,USP3021,USP6295,USP8528,USW3483,GL,KR,KS,KT,GQ,GR,KW,GS,KX,GT,TC,USP12920,USP10981,LC,USP10982,USP12840,USUG1000,USP3275,DC
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