power conversion device
A technology of power conversion device and converter, which is applied in the direction of output power conversion device, converter type, DC power input conversion to DC power output, etc., which can solve the problems of radio noise increase
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no. 1 example
[0033] refer to figure 1 , the structure of the motor drive system having the power conversion device 101 will be described. Such as figure 1 As shown, the motor drive system has motor generators 26 , 27 and a power conversion device 101 .
[0034] The motor generators 26 and 27 are permanent magnet synchronous three-phase AC motors. The motor generators 26 and 27 are used, for example, in a series-parallel hybrid system of a hybrid vehicle. Motor generators 26 and 27 function as motors generating torque when driven by electric power supplied from battery 20 , and function as generators generating electric power when the vehicle is decelerating.
[0035] The power conversion device 101 has a storage battery 20, a common mode capacitor 21, a filter capacitor 22, a step-up chopper circuit 30, a filter capacitor 23, inverters 24, 25, a noise filter 60, a DC-DC converter 80, and a housing 40 . Hereinafter, the motor generator will be referred to as "MG", and the DC-DC convert...
no. 2 example
[0083] In the second embodiment, the structure of the power conversion device 102 is similar to that of the power conversion device 101 of the first embodiment except for the shape of the wall of the housing.
[0084] Such as Figure 5 As shown, the housing 42 of the power conversion device 102 has a reference wall 403 and an adjoining wall 404, and the adjoining wall 404 is adjacent to the reference wall 403 via a common edge Ec, which is one of the edges of a rectangular parallelepiped shape. one.
[0085] Such as Figure 6A As shown, the reference wall 403 has a profile defined by a plurality of edges E11 to E14. Edge E11 is opposite to edge E14. Edge E12 is opposite edge E13. Such as Figure 6B As shown, the abutment wall 404 has a profile defined by a plurality of edges E21 to E24. Edge E21 is opposite edge E24. Edge E22 is opposite edge E23. The edge E11 and the edge E24 correspond to a common edge Ec at which the reference wall 403 and the adjoining wall 404 adj...
no. 3 example
[0088] In the third embodiment, the structure of the power conversion device 103 is similar to that of the power conversion device 101 of the first embodiment except for the arrangement of the noise filter. Such as Figure 7 As shown, the noise filter 160 of the power conversion device 103 is juxtaposed between the common mode capacitor 21 and the filter capacitor 22 . In the structure in which the distance from the inverter input terminal 41 to the noise filter 160 is short, similar advantageous effects to those of the first embodiment can be achieved.
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