Photovoltaic AC current detection plays a crucial role in photovoltaic energy storage systems. It can monitor the current situation in real time to ensure the stable and safe operation of the system and prevent faults such as overload and short circuit. Meanwhile, accurately count and record the current data to provide information support for system optimization and debugging. In addition, it can also achieve load management and battery management, ensuring load balance and long-life efficient operation of the battery. As an important component of the intelligent management of the system, photovoltaic AC current detection also enhances the intelligent level of the system, achieving functions such as remote monitoring and fault diagnosis. Therefore, in the design and operation of photovoltaic energy storage systems, great importance should be attached to their application and development. The CM series current sensors of CHIPSENSE have demonstrated their significant advantages in photovoltaic AC filters.
Advantages in Dealing with the impact on filter performance
High precision and stability
The CM series current sensors, such as CM1A, CM2A, CM3A, CM4A and CM5A, etc., are all based on the closed-loop (compensation) technology of Hall principle, featuring excellent linearity and outstanding accuracy. This high-precision feature helps ensure that in photovoltaic AC filters, even if the filter performance is affected by component parameters and changes in the external environment, the current sensor can still provide accurate current measurement values, thereby guaranteeing the stability and reliability of the filtering effect.
The low-temperature drift characteristic further enhances the stability of the sensor under different temperature conditions, ensuring the accuracy of the measurement results.
Wide measurement range and fast response
The CM series current sensors have a wide measurement range. For instance, the CM1A series can measure a current of ±200A, while the CM5A series can reach up to ±2000A. This meets the detection requirements of different current levels in photovoltaic AC filters.
The fast response time (for example, the response time of the CM1A series is less than 1μs) enables the sensor to quickly capture current changes, which helps the filter respond promptly and adjust the filtering strategy, thereby improving the filtering efficiency.
Requirements for responding to the impacts of complex electrical environments
Strong insulation and safety
The CM series current sensors adopt an insulating design between the primary and secondary sides, and the raw materials comply with the UL 94-V0 standard, ensuring high electrical isolation performance. This design helps prevent electrical breakdown and short-circuit faults, and enhances the safety of the overall photovoltaic AC filter system.
It complies with international standards such as IEC 60664-1, IEC 61800-5-1 and IEC 62109-1, further enhancing the safety and reliability of the sensor.
Strong anti-interference ability
The CM series current sensors have excellent anti-interference capabilities and can effectively resist possible electromagnetic interference and noise in photovoltaic AC filters. This helps ensure the accuracy and stability of the measurement results and avoids misjudgment or malfunction caused by interference.
Requirements for addressing installation and maintenance challenges
Easy to install and maintain
The CM series current sensors feature standardized appearance dimensions and installation interfaces (such as the four Φ4.3mm vias and M4 metal screw installation method of the CM3A series), facilitating quick installation and disassembly in photovoltaic AC filters. Providing detailed installation guidelines and recommended installation torque (for example, the recommended installation torque for the CM4A series is 1.2N·m) helps ensure the correct installation and long-term stable operation of the sensor.
Flexible customization
The CM series current sensors offer a variety of models and specifications to choose from, and can be flexibly customized according to the specific requirements of photovoltaic AC filters. For instance, customized production can be carried out based on requirements such as power supply voltage, coil turns ratio and sockets to meet the demands of different application scenarios.
CHIPSENSE is a national high-tech enterprise that focuses on the research and development, production, and application of high-end current and voltage sensors, as well as forward research on sensor chips and cutting-edge sensor technologies. CHIPSENSE is committed to providing customers with independently developed sensors, as well as diversified customized products and solutions.
“CHIPSENSE, sensing a better world!
www.chipsense.net