Solucio a Bako da Karkashin Kirkiro: Sakamakon Shunt na Daidaita Ya Zama Maimakon Kirkiro na Transformer na Kirkiro na Bako

2yrs + staff 1000+m² US$300,000,000+ China

I. Gwamnati na a Farko
A nan da damar cin kula da abin da ake gina a matsayin ƙarin cin hanyar jiki, tsari da aikin kula da yawa a cikin tushen masana'antu, kayan aiki da kuma ayyukan aikin kula, wadannan babban mutanen da ake amfani da su na aikin kula da yawa (CTs) da kuma Hall sensors suna da abubuwa masu rike da sauri a matsayin adadin mafi kyau (musamman don >30A) da kuma hanyoyin aikin da suka fiye. Wannan aikin ya amfani da shunt resistor manganin na farko da signal chain mai kyau don samun ingantaccen kontrolar da aikin a cikin yanayi da take da damar.

II. Tashar Aikin Mai Kyau

Yankin Cikakken Bayanai

Shunt Resistor Manganin na Farko

Ya gudanar da tashar CT da kuma coil.
Muhimman Parametoci: ɗaukar ƙaramin 50μΩ-5mΩ (daidai da rawa da abin da ake gina), Temperature Coefficient <50ppm/°C.
Tashar farko ta yi ƙasancewar abin da ake gina don kawo abin da ake gina (Kelvin connection).

Signal Processing Chain

Instrumentation Amplifier (INA) na ƙare

Amfani da wurare da drift voltage offset <0.5μV/°C (misali AD8237, INA826).
Gain Error <0.1%, CMRR >120dB (yana kawo abin da ake gina).
Integrated EMI filtering yana kawo abin da ake gina a cikin wurare.

Isolation Optimization

Switched Capacitor Isolator (misali, ADI isoPower®)

Ya gudanar da tashar CT's magnetic isolation structure.
Yana taimakawa da >5kV DC isolation voltage.
40% ƙarin da ake gina, kadan da ake gina ne 60% na bayanai.

Tashar Masana'anta

Injection-Molded Plastic Housing

Ya gudanar da tashar metal shielding layers da kuma potting process.
Yana da IP54 protection rating (dustproof da water splash resistant).
Standardized pluggable terminals don aikin da ake gina.

III. Tashar Ƙarin Da Ake Gina (vs. Aikin Da Ake Gama)

Abu	Aikin Da Ake Gama	Wannan Shunt Solution	Ƙarin Da Ake Gama/Zama
100A Sensor BOM Cost	$8.2	$1.7	79%↓
Daily Production Line Capacity	5,000 pcs	22,000 pcs	340%↑
Calibration Time/Piece	45 sec	8 sec	82%↓
High-Current Spec Premium	300%	20%	-

IV. Muhimman Tsari Mai Kyau

Accuracy: 1% FS (@25°C), 2% FS (@-40°C~+85°C)
Bandwidth: DC~50kHz (zama da aikin da ake gama 10kHz limit)
Rated Current: 15-300A (>300A recommended using parallel shunt arrays)
Power Consumption: <15mW (ba sa iya zama da self-heating impact ba)
Response Time: <1μs (zama a cikin yanayi da ake bukata aikin kula da yawa)

V. Adana Amfani Don Yanayi

Smart Meter Internal Measurement

Suitable for energy metering below Class 1.
Busbar current sampling (paired with Σ-Δ ADC).

Motor Drive Control Systems

Three-phase inverter phase current detection.
Cost-sensitive BLDC controllers.

Overcurrent Protection Devices

Breaker trip current detection.
Response speed improved by 50x.

Solar Inverters

String current monitoring (DC side).
Eliminates traditional CT's residual flux error issue.

VI. Muhimman Abubuwa Don Yadda Ake Yi

Thermal Management Design

Copper pour heat dissipation (PCB acts as heat sink).
Rule to follow: ≥4mm² copper pour per 1A current.

EMC Optimization

Differential trace length matching ≤10mm.
π-filter at instrumentation amplifier front end.

Mass Production Control

Fully automated laser resistor trimming calibration.
Temperature compensation coefficient firmware programming.
Dynamic load testing (replaces traditional burn-in process).

Limitations of the Solution:

Not suitable for >600V strong isolation scenarios (requires reinforced isolation solution).
Significant copper losses at currents >500A (recommend magnetic solution).

07/21/2025

Tambayar Da Yawanci

Zaɓe