Electric-vehicle control apparatus
First Claim
1. An inverter unit that supplies alternating-current power for driving four motors, comprising:
- four inverters each including a U-phase circuit, a V-phase circuit, and a W-phase circuit, each inverter for driving a corresponding one of the four motors, wherein each phase of each of the four inverters comprises a semiconductor device package including at least two semiconductor switching elements;
a heat receiving plate having a surface to which the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are attached; and
a heat radiator that radiates heat from the heat receiving plate;
wherein the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are laid out in a matrix pattern on the heat receiving plate such that (1) the U-phase circuit, the V-phase circuit, and the W-phase circuit for each respective of the four inverters is laid out in a line on the heat receiving plate, and (2) the U-phase circuits of each of the four inverters are laid out in a line, (3) the V-phase circuits of each of the four inverters are laid out in a line, and (4) the W-phase circuits of each of the four inverters are laid out in a line.
1 Assignment
0 Petitions
Accused Products
Abstract
According to one embodiment, four VVVF main circuit inverters for supplying electric power to drive a permanent-magnet synchronous motor are packaged into one unit. The four VVVF main circuit inverters are configured as a 4-in-1 inverter unit which shares a cooling mechanism for radiating heat generated due to power supply operation for the permanent-magnet synchronous motors to outside. A 2-in-1 semiconductor device package in which two semiconductor elements to convert electric power are packaged into one unit to be able to drive a permanent-magnet synchronous motor is contained in the 4-in-1 inverter unit. Thereby, individual control of inverters and reducing the size of the entire apparatus can be achieved for the electric-vehicle control apparatus.
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Citations
14 Claims
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1. An inverter unit that supplies alternating-current power for driving four motors, comprising:
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four inverters each including a U-phase circuit, a V-phase circuit, and a W-phase circuit, each inverter for driving a corresponding one of the four motors, wherein each phase of each of the four inverters comprises a semiconductor device package including at least two semiconductor switching elements; a heat receiving plate having a surface to which the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are attached; and a heat radiator that radiates heat from the heat receiving plate; wherein the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are laid out in a matrix pattern on the heat receiving plate such that (1) the U-phase circuit, the V-phase circuit, and the W-phase circuit for each respective of the four inverters is laid out in a line on the heat receiving plate, and (2) the U-phase circuits of each of the four inverters are laid out in a line, (3) the V-phase circuits of each of the four inverters are laid out in a line, and (4) the W-phase circuits of each of the four inverters are laid out in a line. - View Dependent Claims (2, 3, 4, 5)
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6. An electric-vehicle control apparatus of an electric vehicle, comprising:
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an inverter unit that supplies alternating-current power for driving four motors of the electric vehicle, comprising; four inverters, each including a U-phase circuit, a V-phase circuit, and a W-phase circuit, each inverter for driving a corresponding one of the four motors, wherein each phase of each of the four inverters comprises a semiconductor device package including two semiconductor switching elements that are connected in series to each other; a heat receiving plate having a surface to which the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are attached; and a heat radiator that radiates heat from the heat receiving plate; and wherein the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are laid out in a matrix pattern on the heat receiving plate such that (1) the U-phase circuit, the V-phase circuit, and the W-phase circuit for each respective of the four inverters is laid out in a line on the heat receiving plate, and (2) the U-phase circuits of each of the four inverters are laid out in a line, (3) the V-phase circuits of each of the four inverters are laid out in a line, and (4) the W-phase circuits of each of the four inverters are laid out in a line; a filter reactor connected to a direct current side of the inverter unit; an overvoltage-limit serial circuit configured to discharge an electric power of an overvoltage applied to the inverter; and a direct-current voltage sensor connected in parallel to the inverter unit on the direct current side thereof. - View Dependent Claims (7, 8, 9, 10)
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11. An inverter unit that supplies alternating-current power for driving four motors, comprising:
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four inverters, each including a U-phase circuit, a V-phase circuit, and a W-phase circuit, for driving a corresponding one of the four motors; a heat receiving plate having a surface to which the U-phase circuit, the V-phase circuit, and the W-phase circuit of the four inverters are attached; and a heat radiator that radiates heat from the heat receiving plate, wherein, each of the U-phase, V-phase, and W-phase circuits comprises first to fourth switching elements connected in series, and first and second diodes connected in series between a connection point between the first and second switching elements and a connection point between the third and fourth switching elements, the first and third switching elements are contained in one package and form a first semiconductor device package, the second and fourth switching elements are contained in one package and form a second semiconductor device package, and the first and the second diodes are contained in one package and form a third semiconductor device package, and wherein the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are laid out in a matrix pattern on the heat receiving plate such that (1) the U-phase circuit, the V-phase circuit, and the W-phase circuit for each respective of the four inverters is laid out in a line on the heat receiving plate, and (2) the U-phase circuits of each of the four inverters are laid out in a line, (3) the V-phase circuits of each of the four inverters are laid out in a line, and (4) the W-phase circuits of each of the four inverters are laid out in a line. - View Dependent Claims (12)
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13. An electric-vehicle control apparatus of an electric vehicle, comprising:
an inverter unit that supplies alternating-current power for driving four motors of the electric vehicle, comprising; four inverters, each including a U-phase circuit, a V-phase circuit, and a W-phase circuit, for driving a corresponding one of the four motors; a heat receiving plate having a surface to which the U-phase circuit, the V-phase circuit, and the W-phase circuit of the four inverters are attached; and a heat radiator that radiates heat from the heat receiving plate, wherein, each of the U-phase, V-phase, and W-phase circuits comprises first to fourth switching elements connected in series, and first and second diodes connected in series between a connection point between the first and second switching elements and a connection point between the third and fourth switching elements, the first and third switching elements are contained in one package and form a first semiconductor device package, the second and fourth switching elements are contained in one package and form a second semiconductor device package, and the first and the second diodes are contained in one package and form a third semiconductor device package, and wherein the U-phase circuits, the V-phase circuits, and the W-phase circuits of the four inverters are laid out in a matrix pattern on the heat receiving plate such that (1) the U-phase circuit, the V-phase circuit, and the W-phase circuit for each respective of the four inverters is laid out in a line on the heat receiving plate, and (2) the U-phase circuits of each of the four inverters are laid out in a line, (3) the V-phase circuits of each of the four inverters are laid out in a line, and (4) the W-phase circuits of each of the four inverters are laid out in a line a filter reactor connected to a direct current side of the inverter unit; an overvoltage-limit serial circuit configured to discharge an electric power of an overvoltage applied to the inverter; and a direct-current voltage sensor connected in parallel to the inverter unit on the direct current side thereof. - View Dependent Claims (14)
Specification