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    • 3. 发明授权
    • Inverter system and vehicle
    • 逆变器系统和车辆
    • US07954334B2
    • 2011-06-07
    • US10920246
    • 2004-08-18
    • Masataka SasakiHideki MiyazakiKatsumi IshikawaKeiji Maekawa
    • Masataka SasakiHideki MiyazakiKatsumi IshikawaKeiji Maekawa
    • F25D23/12
    • B60L3/00B60L2200/26B60L2210/20B60L2240/525H02M7/48Y02T10/725
    • An inverter system having a semiconductor device, and a railway vehicle using this inverter, provide a more accurate determination of whether an abnormal heat generation from the inverter is associated with an error of the inverter system or is due to other causes, by use of a plurality of temperature detecting elements at a plurality of sites associated with the semiconductor device. An error detection section applies inputs from the temperature detecting elements, captures a trend of the differential value based on the plurality of temperature inputs using period sampling wherein an error associated with the semiconductor device, and not from some other condition such as outside environment temperature, is determined based on differences from, or a change in, the initial trend.
    • 具有半导体装置的逆变器系统和使用该逆变器的铁路车辆能够更准确地确定逆变器系统的异常发热是否与逆变器系统的误差有关,或者是由于其他原因,通过使用 在与半导体器件相关联的多个位置处的多个温度检测元件。 误差检测部分应用来自温度检测元件的输入,使用周期采样捕获基于多个温度输入的差分值的趋势,其中与半导体器件相关联的误差,而不是来自诸如外部环境温度等某些其他条件, 是根据初始趋势的差异或变化来确定的。
    • 6. 发明申请
    • Inverter system and vehicle
    • 逆变器系统和车辆
    • US20050132726A1
    • 2005-06-23
    • US10920246
    • 2004-08-18
    • Masataka SasakiHideki MiyazakiKatsumi IshikawaKeiji Maekawa
    • Masataka SasakiHideki MiyazakiKatsumi IshikawaKeiji Maekawa
    • F25D17/00G01K13/00G05D23/00H02M7/48
    • B60L3/00B60L2200/26B60L2210/20B60L2240/525H02M7/48Y02T10/725
    • The object of the invention is to provide an inverter system and vehicles using this inverter wherein accurate detection of the abnormal heat generation from the inverter is ensured, despite a large amount of noise signals, a substantial fluctuation in environmental temperature, or a change of cooling performances resulting from the environmental conditions. Based on the output value of an outside air temperature detecting means 150 and temperature calculation parameters inputted from outside the inverter system, the temperature calculation circuit 144B of an error detecting section 144 calculates the temperature Tcal where a temperature detecting means below semiconductor device 152 is installed. A calculation approximate line calculation circuit 144C works out the approximate curve of the difference between the theoretical temperature value and the real temperature value Treal detected by a temperature detecting means below semiconductor device 152, and captures the trend of the temperature difference, using a periodic sampling method, whereby a error determining circuit 144E determines an error, based on the difference from the initial trend obtained in advance or change of the trend.
    • 本发明的目的是提供一种使用该逆变器的逆变器系统和车辆,其中,即使存在大量的噪声信号,环境温度的显着变动或冷却变化,也能确保从逆变器的异常发热的准确检测 由环境条件造成的表演。 基于外部空气温度检测装置150的输出值和从逆变器系统外部输入的温度计算参数,误差检测部分144的温度计算电路144B计算温度T cal,其中a 安装半导体装置152下方的温度检测装置。 计算近似线计算电路144C计算出由半导体器件152下方的温度检测装置检测的理论温度值和实际温度值实际值之间的差的近似曲线,并且捕获趋势 的温度差,使用周期性采样方法,由此误差确定电路144E基于与预先获得的初始趋势的差异或趋势的变化来确定误差。