Ground structure for motor
US-2015380887-A1 · Dec 31, 2015 · US
Vehicle
US2015307078A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015307078-A1 |
| Application number | US-201514694182-A |
| Country | US |
| Kind code | A1 |
| Filing date | Apr 23, 2015 |
| Priority date | Apr 28, 2014 |
| Publication date | Oct 29, 2015 |
| Grant date | — |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A vehicle comprises a rotary electric machine, an inverter and an electronic control unit. The inverter is configured to supply current to the rotary electric machine. The electronic control unit is configured to set a control mode of the inverter to a first mode on a condition that the electronic control unit determines that there is no possibility of occurrence of the electrolytic corrosion. The electronic control unit configured to set the control mode of the inverter to a second mode and maintain output of the rotary electric machine at user request output on a condition that the electronic control unit determines that there is a possibility of occurrence of the electrolytic corrosion. The second mode is a mode in which occurrence of the electrolytic corrosion is further suppressed compared to the first mode.
First claim
Opening claim text (preview).
What is claimed is: 1 . A vehicle comprising: a rotary electric machine; an inverter configured to supply current to the rotary electric machine; and an electronic control unit configured to control the inverter, the electronic control unit configured to determine whether there is a possibility of occurrence of electrolytic corrosion in a peripheral portion of the rotary electric machine, the electronic control unit configured to set a control mode of the inverter to a first mode on a condition that the electronic control unit determines that there is no possibility of occurrence of the electrolytic corrosion, the electronic control unit configured to set the control mode of the inverter to a second mode and maintain output of the rotary electric machine at user request output on a condition that the electronic control unit determines that there is a possibility of occurrence of the electrolytic corrosion, and the second mode being a mode in which occurrence of the electrolytic corrosion is further suppressed compared to the first mode. 2 . The vehicle according to claim 1 , wherein the electronic control unit is configured to control the inverter by pulse width modulation control, the second mode is a mode in which a frequency of a carrier signal is set to a frequency that further suppresses the occurrence of the electrolytic corrosion compared to the first mode and output of the rotary electric machine is maintained at the user request output, and the carrier signal is used for the pulse width modulation control. 3 . The vehicle according to claim 1 , wherein the electronic control unit is configured to estimate strength and stress based on an operation state of the rotary electric machine, the electronic control unit is configured to determine whether there is a possibility of occurrence of the electrolytic corrosion based on an estimated strength and stress, the strength indicates resistance strength of the peripheral portion against the electrolytic corrosion, and the stress indicates an electric load applied to the peripheral portion. 4 . The vehicle according to claim 1 , wherein the vehicle is a hybrid vehicle that includes a travel motor and a regenerative generator, and the rotary electric machine is at least one of the travel motor or the regenerative generator.
Assignees
Inventors
Classifications
- B60W10/08Primary
including control of electric propulsion units, e.g. motors or generators · CPC title
Electric propulsion units · CPC title
- H02P27/085Primary
wherein the PWM mode is adapted on the running conditions of the motor, e.g. the switching frequency · CPC title
Torque · CPC title
Energy storage systems for electromobility, e.g. batteries · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2015307078A1 cover?
- A vehicle comprises a rotary electric machine, an inverter and an electronic control unit. The inverter is configured to supply current to the rotary electric machine. The electronic control unit is configured to set a control mode of the inverter to a first mode on a condition that the electronic control unit determines that there is no possibility of occurrence of the electrolytic corrosion. …
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60W10/08. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Oct 29 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).