| 摘要 |
PROBLEM TO BE SOLVED: To provide a power conversion device that performs the control based on a local voltage when abnormality occurs in remote voltage detection means, and has high responsibility and a small number of components.SOLUTION: A power conversion device 10 has semiconductor switches Q1 to Q4 for adjusting voltage control current Imos, a remote voltage sensor S1 for detecting a remote voltage Vs applied to an electrical load 60, a local voltage sensor S2 for detecting a local voltage Vo output from an output terminal, and a controller 20. The controller 20 calculates target current Iref on the basis of the voltage deviation between any one of the remote voltage Vs and the local voltage Vo and the target voltage Vs*, controls the semiconductor switches Q1 to Q4 so that the voltage control current Imos is equal to the target current Iref, thereby adjusting the output voltage to the target voltage Vs*, and calculates the target current Iref by using one of the remote voltage Vs and the local voltage Vo, which makes the target current Iref smaller.SELECTED DRAWING: Figure 1 |
