External power supply system

A technology for power supply systems and motors, applied in control systems, motors, electrical devices, etc., can solve problems such as power output errors, achieve the effect of improving quality and reducing output errors

Active Publication Date: 2015-12-09
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, since an error occurs in a dead time period (the dead time period is a period in which a drive signal of an off state is supplied to both the upper arm and the lower arm switching elements of the inverter) (hereinafter, such error is known as dead zone error), therefore, an error also occurs in the power output from the neutral point

Method used

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Examples

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no. 1 example

[0050] figure 1 is a block diagram showing the overall configuration of a vehicle to which the external power supply system according to the first embodiment is applied. In the following embodiments, the vehicle is a hybrid vehicle. However, the vehicle according to the present invention is not limited to a hybrid vehicle. like figure 1 As shown, vehicle 100 includes: engine 2 ; motor generators MG1 , MG2 ; power split mechanism 4 ; and drive wheels 6 . Vehicle 100 further includes: power storage device B; system main relay SMR; converter 10 ; inverters 21 , 22 ;

[0051] Vehicle 100 is a hybrid vehicle that travels using engine 2 and motor generator MG2 as power sources. Driving force generated by engine 2 and motor generator MG2 is transmitted to drive wheels 6 .

[0052] The engine 2 is an internal combustion engine such as a gasoline engine and a diesel engine, which outputs power by burning fuel. The engine 2 is configured to be electrically controllable in terms of...

no. 2 example

[0139] In the first embodiment, in order to compensate for an output voltage error or the like during engine operation, control performed based on the inverter current polarity is applied. However, when the current polarity changes at a high rate, if the control is performed after each determination of the current polarity, the control delay affects the voltage compensation.

[0140] Figure 21 is a waveform diagram showing an example where the current ripple is strong and the current polarity fluctuates at a high rate. Figure 21 Shows neutral point output voltage VO and inverter output current igv. In the portion enclosed by the dotted line G, the current changes during the zero crossing and repeatedly reverses its polarity from positive to negative, or negative to positive, at a high rate. In this case, it is difficult to perform feedback control on the polarity of the current. In the second embodiment, instead of performing current polarity determination based on the ou...

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PUM

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Abstract

An external power supply system includes an electrical storage device (B), a motor, an inverter that drives the motor by using electric power of the electrical storage device (B), and a control device (50) that controls the inverter. The inverter (21) includes a first switching element and a second switching element connected in series with each other between a positive electrode power supply line (PL2) and a negative electrode power supply line (NL). A connection node of the first switching element and the second. switching element is connected to a corresponding one of stator coils. The control device (50) inputs driving signals to the inverter (21) so as to drive the inverter (21) such that a voltage at the neutral point becomes a predetermined value. The control device (50) compensates for the driving signals in a dead time period, which is a period in which off-state driving signals are supplied to the first switching element and the second switching element, on the basis of a Current that is input from the connection node to the corresponding one of the stator coils or output from the corresponding one of the stator coils to the connection node while an engine is driven.

Description

technical field [0001] The present invention relates to an external power supply system, and more particularly, to an external power supply system configured to output electric power of a power storage device to an external device via an inverter. Background technique [0002] Japanese Patent Application Publication No. 2010-098851 (JP2010-098851A) describes a hybrid vehicle configured to charge a battery using an external power source connected to a neutral point of a motor generator. [0003] It is conceivable to supply electric power from a battery to a device outside the vehicle using a neutral point of a motor generator of a hybrid vehicle including the configuration described in JP2010-098851A. [0004] However, since an error occurs in a dead time period (the dead time period is a period in which a drive signal of an off state is supplied to both the upper arm and the lower arm switching elements of the inverter) (hereinafter, such The error is known as the dead zone...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L11/12H02M7/5387B60L50/15B60L50/16
CPCB60L11/123H02M7/5387H02M7/5395H02M2001/007H02M2001/385H02P25/16H02P27/08B60L1/006B60L3/003B60L3/0061B60L15/007B60L15/08B60L2210/40B60L2240/427B60L2240/429B60L2240/526B60L2240/527B60L2240/529B60L2240/80B60L2260/26B60L50/16B60L50/61H02M1/007H02M1/385Y02T10/62Y02T10/64Y02T10/70Y02T10/7072Y02T10/72H02P9/02H02P2101/45
Inventor 木野村茂树上田真吾渡边良利梅野孝治
Owner TOYOTA JIDOSHA KK
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