公开(公告)号：US08091666B2

公开(公告)日：2012-01-10

申请号：US12615494

申请日：2009-11-10

申请人： Natsuki Nozawa ,  Takashi Hamatani

发明人： Natsuki Nozawa ,  Takashi Hamatani

IPC分类号： B60W10/04

CPC分类号： B60W30/1884 ,  B60K1/02 ,  B60K6/365 ,  B60K6/445 ,  B60L2240/421 ,  B60L2240/423 ,  B60W10/06 ,  B60W10/08 ,  B60W20/00 ,  B60W2510/081 ,  B60W2510/244 ,  B60W2520/10 ,  B60W2540/10 ,  B60W2540/12 ,  B60W2710/0644 ,  B60W2710/0666 ,  B60W2710/081 ,  B60W2710/083 ,  Y02T10/6239 ,  Y02T10/6286 ,  Y02T10/642

摘要： An electrically powered vehicle includes: a boost converter that boosts a power supply voltage and outputs a boosted voltage; an inverter that receives the boosted voltage from the boost converter and controls a rotating electric machine for travel; and a control device that performs control to limit the boosted voltage when it is determined that the rotating electric machine is in a locked state and both an accelerator and a brake are not operated to be on.

摘要翻译： 电动车辆包括：升压转换器，其升高电源电压并输出升压电压; 接收来自升压转换器的升压电压并控制用于行驶的旋转电机的逆变器; 以及控制装置，当确定旋转电机处于锁定状态并且加速器和制动器都不被操作时，执行控制以限制升压电压。

公开(公告)号：US20150131350A1

公开(公告)日：2015-05-14

申请号：US14394875

申请日：2012-04-18

申请人： Takuya ISOMURA ,  Takashi HAMATANI ,  Kenichi NAKATA ,  Kazuya MATSUME ,  TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Takuya Isomura ,  Takashi Hamatani ,  Kenichi Nakata ,  Kazuya Matsumi

IPC分类号： H02M1/38 ,  H02M7/537

CPC分类号： H02M1/38 ,  H02M7/537 ,  H02M7/538 ,  H03K17/08128 ,  H03K17/168

摘要： This description relates to an electrical power converter including a series connection of two transistors, and provides a technology for suppressing increase in electrical current flowing through the transistors when the two transistors are turned on at the same time for some defective reason. An electrical power converter disclosed herein includes a series connection of a first transistor and a second transistor. The electrical power converter includes a clamp circuit configured to inhibit an abnormal rise in gate voltage, which is provided in at least either the first transistor or the second transistor. The clamp circuit includes a diode and a capacitor. The diode has an anode connected with a gate of the transistor. The capacitor has one electrode connected with a cathode of the diode and the other electrode connected with an emitter of the transistor.

摘要翻译： 本说明书涉及一种包括两个晶体管的串联连接的电力转换器，并且提供了一种用于在两个晶体管同时导通一些有缺陷的原因时抑制流过晶体管的电流的增加的技术。 本文公开的电力转换器包括第一晶体管和第二晶体管的串联连接。 电力转换器包括钳位电路，其被配置为抑制在至少第一晶体管或第二晶体管中提供的栅极电压的异常上升。 钳位电路包括二极管和电容器。 二极管具有与晶体管的栅极连接的阳极。 电容器具有与二极管的阴极连接的一个电极，而另一个电极与晶体管的发射极连接。

公开(公告)号：US08027181B2

公开(公告)日：2011-09-27

申请号：US12373149

申请日：2007-07-05

申请人： Takashi Hamatani

发明人： Takashi Hamatani

IPC分类号： H02M3/24 ,  H02H7/122

CPC分类号： B60L3/12 ,  B60L11/005 ,  B60L11/1872 ,  B60L2210/14 ,  B60L2240/525 ,  H02M7/797 ,  H02M2001/0048 ,  H02P2201/09 ,  H03K17/14 ,  H03K2017/0806 ,  Y02T10/642 ,  Y02T10/7005 ,  Y02T10/7022 ,  Y02T10/705 ,  Y02T10/7225 ,  Y02T10/92

摘要： A surge voltage generated by the switching operation of an IGBT element and voltage variation generated in an equivalent series resistance of a capacitor are superimposed on an input voltage of an inverter. The equivalent series resistance has a temperature dependence that a resistance value increases with a decrease in a capacitor temperature. The IGBT element has a temperature dependence that an element withstand voltage decreases with a decrease in an inverter temperature. When capacitor temperature is lower than a predetermined threshold value, a control device reduces an upper limit value of the input voltage by an amount corresponding to the voltage variation from its upper limit value at a high temperature, and controls a target voltage of a boost converter such that an output voltage does not exceed the upper limit value. Consequently, the allowable range of the surge voltage can be ensured.

摘要翻译： 由IGBT元件的开关动作产生的浪涌电压和电容器的等效串联电阻产生的电压变化叠加在逆变器的输入电压上。 等效串联电阻具有电阻值随着电容器温度的降低而增加的温度依赖性。 IGBT元件具有温度依赖性，元件耐压随着逆变器温度的降低而降低。 当电容器温度低于预定阈值时，控制装置将输入电压的上限值从其在高温下的上限值的电压变化量减小，并控制升压转换器的目标电压 使得输出电压不超过上限值。 因此，能够确保浪涌电压的容许范围。