A Quasi-Synchronous Sampling Energy Metering Chip with a Dedicated Dual-Core DSP

2021 ◽  
Author(s):  
Xiaohui Xiao ◽  
Nianxiong Tan ◽  
Jie Cao ◽  
Zhaosheng Du
Keyword(s):  
Synchronous Sampling ◽  
Energy Metering ◽  
Dual Core

Study on Asynchronous Sampling in Digital Electrical Energy Metering Based on IEC61850

2013 ◽  
Vol 860-863 ◽  
pp. 2417-2422
Author(s):  
Yi Tang ◽  
Bo Jiang ◽  
Hong Bin Li ◽  
Xian Shun Chen
Keyword(s):  
Electrical Energy ◽  
Extreme Conditions ◽  
Power Network ◽  
Additional Error ◽  
Iec 61850 ◽  
Synchronous Sampling ◽  
Asynchronous Sampling ◽  
Energy Metering ◽  
Technical Issues ◽  
Error Simulation

Technical issues regarding asynchronous sampling for digital electrical energy metering based on IEC 61850 are studied. Asynchronous sampling is inevitable when the power network frequency fluctuates. The additional metering error caused by asynchronous sampling is simulated and discussed. The additional error can be as big as 2% under typical conditions, which is unacceptable. Quasi-synchronous sampling algorithm is employed to reduce the error. Simulation result shows that it can reduce the error to an ignorable level. The error under extreme conditions is also simulated and discussed.

Wide-Tuning-Wavelength-Range LGLC Laser with Low-Loss Dual-Core Spot Size Converter

2012 ◽  
Vol E95.C (7) ◽  
pp. 1272-1275
Author(s):  
Takanori SUZUKI ◽  
Hideo ARIMOTO ◽  
Takeshi KITATANI ◽  
Aki TAKEI ◽  
Takafumi TANIGUCHI ◽  
...  
Keyword(s):  
Wavelength Range ◽  
Spot Size ◽  
Low Loss ◽  
Dual Core

Real-time wavelet denoising for pulsed eddy current signal based on heterogeneous dual-core

2013 ◽  
Vol 33 (3) ◽  
pp. 866-870
Author(s):  
Xuanbing QIU ◽  
Jilin WEI ◽  
Xiaochao CUI ◽  
Chunhua XIA
Keyword(s):  
Real Time ◽  
Eddy Current ◽  
Wavelet Denoising ◽  
Current Signal ◽  
Pulsed Eddy Current ◽  
Dual Core
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