Abstract:
PROBLEM TO BE SOLVED: To provide a power conversion device that is excellent in mountability of a reactor and allows simplifying manufacturing process and improving manufacturing efficiency.SOLUTION: A power conversion device 1 includes a stack 2 and a reactor 5. The reactor 5 is disposed at one end side of the stack 2 in a stacking direction X, and a coil 51 has a wound portion 511 and a pair of extraction portions 512. Each semiconductor module part 20 is provided with power terminals 211, and the stack 2 includes terminal columns 29 composed of the power terminals 211. The pair of extraction portions 512 are disposed at both end portions of a core 52 in an orthogonal direction Y, and are disposed so as to be substantially linear with respect to the different terminal columns 29. One of the pair of extraction portions 512 is connected to the power terminals 211 of the semiconductor module part 20 via a bus bar 6. The bus bar 6 has an extraction connection portion 61, a terminal connection portion 62, and a coupling portion 63. The coupling portion 63 is formed in the stacking direction X so as to pass the outside of the terminal columns 29.
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor that is able to ensure insulation properties for a coil and a core by a simple structure, is excellent in coil heat dissipation, and, furthermore, is excellent in durability and reliability, and to provide a manufacturing method therefor.SOLUTION: A reactor 1 comprises: a core 3 having a slot 32 extending through the interior thereof; and a coil 2 extending through the slot 32 and composed of a conducting wire 20 wound around the core 3. The conducting wire 20 of the coil 2 is composed of a plurality of short conducting wire parts 20a and a plurality of long conducting wire parts 20b longer than the short conducting wire parts 20a. In the slot 32 of the core 3, the short conducting wire parts 20 and long conducting wire parts 20b are arranged such that one alternates the other in the axial direction of the coil 2. Outside the slot 32, one end of each long conducting wire part 20b is joined to one end of another short conductive wire part 20a adjacent on one side in the direction of lamination, and the other of it is jointed to the one end of further another short conductive wire part 20a adjacent on the other side in the direction of the lamination.
Abstract:
PROBLEM TO BE SOLVED: To provide a reactor capable of improving a heat radiation performance by reducing vibration.SOLUTION: A reactor 1 comprises: a cylindrical coil 2 generating a magnetic flux by energization; a core 3 made of magnetic powder mixture resin formed by mixing resin with magnetic powder, and inside which the coil 2 is embedded; and a columnar central core part 4 arranged in an axial line direction X of the coil 2 on an inner peripheral side of the coil 2, and at least part of which is embedded inside the core 3. Contact faces 401, 402 contacting a stationary member holding and fixing the central core part 4 from both sides in the axial line direction X are formed at both ends of the axial line direction X of the central core part 4. Surface roughness Rz of a contact face 403 of the central core part 4 contacting the core 3 is larger than surface roughness Rz of the contact faces 401, 402. An intermediate face 404 having surface roughness Rz smaller than that of the contact face 403 and larger than that of the contact faces 401, 402 is formed on the central core part 4.
Abstract:
PROBLEM TO BE SOLVED: To provide a vibration measurement method and a vibration measurement device of a reactor device, which can measure a vibration value of vibration occurring by electrification of the reactor device in time shorter than a conventional case.SOLUTION: The vibration measurement method for measuring the vibration value of the reactor device 10 includes: a characteristic that a Youg's modulus changes with a temperature change of a dust core; a frequency range determining step for determining a frequency range (prescribed range) where a current frequency f (frequency) of AC current Iac which is made to flow to a coil 13 is changed in accordance with a temperature range for changing a temperature of the reactor device 10; and a vibration value measuring step for changing the current frequency f of the AC current Iac which is made to flow to the coil 13 within the frequency range and measuring the vibration value of the vibration occurring in the reactor device 10. Since the current frequency f of the AC current Iac which is made to flow to the coil 13 is changed only in the frequency range with such structure, the vibration value can be measured in short time.