2019 Volume 139 Issue 5 Pages 459-465
In interleaved DC-DC converters, current control is required to solve the problem of unbalanced inductor current. Generally, the same number of current sensors as the number of phases are required for inductor current control, and it increases the cost and circuit volume. In previous work, inductor current control of three-phase interleaved bidirectional boost converters was achieved by high-side DC-link current detection using a current sensor. This paper proposes an inductor current estimation method for three-phase interleaved bidirectional buck-boost converters using a current sensor on a DC bus. In addition, the effectiveness of the proposed method is verified by experimental results. As a result, this paper shows that each inductor current can be estimated with our proposed method in bidirectional buck-boost operation. Experimental results showed that the proposed method could estimate the inductor current with an error rate of 0.146% or less.
The transactions of the Institute of Electrical Engineers of Japan.C
The transactions of the Institute of Electrical Engineers of Japan.B
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan
