Power conversion device
AssigneeMitsubishi Electric Corporation
InventorsHirofumi Inoue, Kohei Ando
Life of this patent
Estimating the term…
Abstract
A shield plate is used for reducing an influence that noise generated from a power conversion module has on a control board, and the shield plate is fastened to a resin member provided with a busbar by screw fixation from above. Thus, these are provided as separate members and the number of components increases, so that there is a problem in decrease in the number of assembly steps and size reduction. In the present disclosure, a DC busbar positive electrode, a DC busbar negative electrode, and a shield plate are stacked with non-conductive members interposed therebetween, and are integrated together with AC busbars and sensor cores by resin, to form a busbar assembly. The busbar assembly is provided between the power conversion module and the control board.
Claims9
A power conversion device comprising:
- a power conversion module which includes a switching element and performs power conversion between DC and AC through turning on and off of the switching element;
- a DC busbar having a positive electrode and a negative electrode which are connected to DC terminals of the power conversion module and through which DC current is inputted/outputted;
- an AC busbar which is connected to AC terminals of the power conversion module and through which AC current is inputted/outputted;
- a sensor core for detecting the AC current;
- a shield plate;
- and
- a control board including an electronic circuit for performing ON/OFF control of the power conversion module, wherein
- the DC busbar includes a flat-plate-shaped DC busbar positive electrode and a flat-plate-shaped DC busbar negative electrode,
- the DC busbar positive electrode, the DC busbar negative electrode, and the shield plate are stacked with non-conductive members interposed therebetween, and are integrated together with the AC busbar and the sensor core by non-conductive resin, to form a busbar assembly, and
- the busbar assembly is provided between the power conversion module and the control board.
Dependencies are inferred from the claim text.