Power source control apparatus for rotating electrical machine
US-9356543-B2 · May 31, 2016 · US
Electric drive vehicle
US2015120120A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2015120120-A1 |
| Application number | US-201414520460-A |
| Country | US |
| Kind code | A1 |
| Filing date | Oct 22, 2014 |
| Priority date | Oct 29, 2013 |
| Publication date | Apr 30, 2015 |
| Grant date | — |
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- Title
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Abstract
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During traveling of an electric drive vehicle 100 , if a quantity of regenerative power generated by a synchronous motor generator 40 is greater than a first predetermined value, a slip frequency S of an induction motor generator 50 is changed while maintaining a torque output of the induction motor generator 50 , thereby increasing power consumption by the induction motor generator 50 . With this structure, it is possible to effectively protect electric devices when excessive power regeneration occurs.
First claim
Opening claim text (preview).
What is claimed is: 1 . An electric drive vehicle, comprising: a battery; at least one vehicle driving induction motor generator; at least one other vehicle driving motor generator; and a control unit that adjusts a quantity of electric power to be supplied from the battery to the at least one vehicle driving induction motor generator and the at least one other vehicle driving motor generator, and a quantity of regenerative power to the battery from the at least one vehicle driving induction motor generator and the at least one other vehicle driving motor generator; the control unit including first slip frequency changing means that changes a slip frequency of the at least one vehicle driving induction motor generator while maintaining a torque output of the at least one vehicle driving induction motor generator, if the quantity of regenerative power generated by the at least one other vehicle driving motor generator is equal to or greater than a first predetermined value, during traveling of the electric drive vehicle. 2 . The electric drive vehicle according to claim 1 , wherein the control unit includes: second slip frequency changing means that changes the slip frequency of the at least one vehicle driving induction motor generator without maintaining the torque output of the at least one vehicle driving induction motor generator, if the quantity of regenerative power generated by the at least one other vehicle driving motor generator is equal to or greater than a second predetermined value which is greater than the first predetermined value, during traveling of the electric drive vehicle. 3 . An electric drive vehicle, comprising: a battery; at least one vehicle driving induction motor generator; at least one other vehicle driving motor generator; and a control unit that includes a CPU and adjusts a quantity of electric power to be supplied from the battery to the at least one vehicle driving induction motor generator and the at least one other vehicle driving motor generator and a quantity of regenerative power to the battery from the at least one vehicle driving induction motor generator and the at least one other vehicle driving motor generator; the control unit executing, using the CPU, a first slip frequency changing program that changes a slip frequency of the at least one vehicle driving induction motor generator while maintaining a torque output of the at least one vehicle driving induction motor generator, if the quantity of regenerative power generated by the at least one other vehicle driving motor generator is equal to or greater than a first predetermined value, during traveling of the electric drive vehicle. 4 . In an electric drive vehicle comprising a battery, at least one vehicle driving induction motor generator, and at least one other vehicle driving motor generator, a method of adjusting a quantity of electric power to be supplied from the battery to the at least one vehicle driving induction motor generator and the at least one other vehicle driving motor generator, and a quantity of regenerative power to the battery from the at least one vehicle driving induction motor generator and the at least one other vehicle driving motor generator; the method comprising changing a slip frequency of the at least one vehicle driving induction motor generator while maintaining a torque output of the at least one vehicle driving induction motor generator, if the quantity of regenerative power generated by the at least one other vehicle driving motor generator is equal to or greater than a first predetermined value, during traveling of the electric drive vehicle.
Assignees
Inventors
Classifications
Regenerative braking · CPC title
Controlling based on slip frequency, e.g. adding slip frequency and speed proportional frequency · CPC title
- B60W20/108Primary
Operations & Transport · mapped topic
- B60W10/08Primary
including control of electric propulsion units, e.g. motors or generators · CPC title
- B60L50/13Primary
using AC generators and AC motors · CPC title
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Frequently asked questions
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- What does patent US2015120120A1 cover?
- During traveling of an electric drive vehicle 100 , if a quantity of regenerative power generated by a synchronous motor generator 40 is greater than a first predetermined value, a slip frequency S of an induction motor generator 50 is changed while maintaining a torque output of the induction motor generator 50 , thereby increasing power consumption by the induction motor generator 50 .…
- Who is the assignee on this patent?
- Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification B60W20/108. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Thu Apr 30 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).