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Inverter control device and control device for vehicle

A technology of control devices and inverters, which is applied in the direction of power consumption devices, control systems, vehicle energy storage, etc., and can solve problems such as DC link voltage rise, DC power supply damage, damage, etc.

Active Publication Date: 2017-08-29
AISIN AW CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the shutdown control is executed while the power switch is on, a high regenerative torque is generated and a large DC power supply current for charging the DC power supply flows, which may cause damage to the DC power supply.
On the other hand, if the power switch is turned off to protect the DC power supply, the DC link voltage rises sharply
As a result, there is a possibility of causing damage to the inverter (switching element), the smoothing capacitor that smoothes the DC link voltage, etc.

Method used

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  • Inverter control device and control device for vehicle
  • Inverter control device and control device for vehicle
  • Inverter control device and control device for vehicle

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0040] Next, the inverter control device according to the first embodiment will be described based on the drawings. Such as figure 1 As shown, the inverter control device 20 takes the rotating electric machine driving device 1 including the inverter 10 as a control object, and drives and controls the rotating electric machine 80 via the rotating electric machine driving device 1 . The inverter control device 20 performs switching control of the switching elements 3 constituting the inverter 10 , and executes failsafe control described later when a failure occurs in the rotary electric machine drive device 1 .

[0041] The inverter 10 is connected to the high-voltage battery 11 (DC power supply) via the contactor 9 (power switch) and connected to the AC rotating electrical machine 80, and conducts power between DC and multi-phase AC (here, three-phase AC). Converted power conversion device. The AC one-phase arm of the inverter 10 is constituted by a series circuit of an upper...

no. 2 approach

[0084] Next, a second embodiment of the inverter control device will be described. In the present embodiment, the inverter control device 20 selectively executes active short-circuit control (ASC) and shutdown control (SD) according to the modulation control method of the inverter 10 when the rotary electric machine drive device fails. This point is different from the first embodiment described above in which these controls are selectively executed according to the rotation speed of the rotary electric machine 80 . Hereinafter, the inverter control device 20 according to the present embodiment will be described focusing on differences from the first embodiment described above. In addition, about the point which is not demonstrated especially, it can be made the same as that of the said 1st Embodiment.

[0085] Also in the present embodiment, the inverter control device 20 is based on the target torque TM of the rotary electric machine 80 supplied as a request signal from anot...

no. 3 approach

[0108] Next, as a third embodiment, an embodiment of a vehicle control device including the inverter control device according to the above-mentioned first embodiment or second embodiment will be described. Such as Figure 14 As shown, the vehicle control device 50 includes a vehicle drive device 60 including at least a rotary electric machine (MG: Motor / Generator) 80 and a transmission device 90 , and a rotary electric machine drive device 1 (INV) including the above-mentioned inverter 10 . control target. Therefore, it is constituted by including the above-mentioned inverter control device 20 for controlling the rotary electric machine drive device 1 . In the present embodiment, the vehicle drive device 60 is a so-called parallel type hybrid drive device, and includes an internal combustion engine 70 and a rotary electric machine 80 as a drive force source for the wheels W. That is, in the present embodiment, the vehicle drive device 60 includes an internal combustion engin...

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PUM

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Abstract

The present invention performs suitable fail-safe control while suppressing excessive increase in current for charging a DC power source or in DC link voltage, when a failure has occurred in a rotating electric machine drive unit. This inverter control device selectively performs: active short circuit control (ASC) of either upper stage side active short circuit control which turns on upper stage side switching elements of arms for all plural phases or lower stage side active short circuit control which turns on lower stage side switching elements of the arms for all the plural phases; and shutdown control (SD) which turns off all switching elements. The inverter control device performs the active short circuit control (ASC) or the shutdown control (SD) in accordance with a modulation control system that has been running when a failure has occurred in the rotation speed of a rotating electric machine or in the rotating electric machine drive unit.

Description

technical field [0001] The present invention relates to an inverter control device for controlling a rotary electric machine drive device including an inverter, and a vehicle control device including the inverter control device. Background technique [0002] An inverter for converting power between direct current and alternating current is often provided between an alternating current rotating electric machine and a direct current power supply. Here, the rotating electric machine functions not only as a motor that outputs power from electric energy, but also as a generator that generates power from kinetic energy of wheels, an internal combustion engine, and the like. The electric power generated by the rotating electric machine is regenerated and stored in the DC power supply. In addition, there are cases where a power switch such as a contactor is provided between the DC power supply and the inverter. When the power switch is turned on, it is in a conducting state, and t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/06
CPCB60L50/51H02P27/06H02P29/027Y02T10/70B60L3/003B60L3/0061B60L3/04H02H7/1227H02H7/18H02P3/24H02P27/08
Inventor 苏布拉塔·萨哈吉田高志杉山裕树田岛阳一小久保昌也
Owner AISIN AW CO LTD
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