| 摘要 |
Integrated current sensors are used in AC electric power systems. An integrated current sensor according to one embodiment comprises: an inductor ( 101 ), wherein an AC current passes through the inductor ( 101 ); an integrator circuit ( 103 ), the integrator circuit ( 103 ) receiving a voltage associated with the AC current; a gain control circuit ( 116 ) operationally connected to the integrator circuit ( 103 ), the gain control circuit ( 116 ) outputting a gain controlled signal; and a compensation circuit ( 115 ) operationally connected to at least two of the integrator circuit ( 103 ), the gain control circuit ( 116 ), and the inductor ( 101 ), to compensate for parameter variation induced in the gain controlled signal or in the output of the integrator circuit ( 103 ).
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