公开(公告)号：US20130220726A1

公开(公告)日：2013-08-29

申请号：US13766812

申请日：2013-02-14

Applicant: Denso Corporation

Inventor： Takafumi SATOU ,  Jiro HAYASHI

IPC: H02P6/12 ,  B62D5/04 ,  H02P3/02

CPC classification number: H02P6/12 ,  B62D5/0409 ,  B62D5/0484 ,  B62D5/0487 ,  H02H7/1227 ,  H02P3/02 ,  H02P29/0241

Abstract: A power transducer failure detection device detects a failure on a power transducer, making a power transducer control device stop driving the power transducer. A first switching control device turns off a first power supply relay of a power supply source switching device and turns on a second power supply relay of the power supply source switching device. While the power transducer stops driving, a motor may rotate due to an external force to generate a regenerative voltage. The regenerative voltage is then regenerated in a battery through a route from the power transducer via the second power supply relay being turned on and a parasitic diode of the first power supply relay. This can protect elements such as switching elements and a smoothing capacitor of the power transducer against a regenerative voltage and prevent the elements from being destroyed or reducing the useful life due to overvoltage.

Abstract translation: 功率传感器故障检测装置检测功率传感器的故障，使功率传感器控制装置停止驱动功率传感器。 第一切换控制装置关闭电源切换装置的第一电源继电器，接通电源切换装置的第二电源继电器。 当功率传感器停止驱动时，电机可能由于外力而旋转，以产生再生电压。 然后，再生电压通过来自功率转换器的路径经由导通的第二电源继电器和第一电源继电器的寄生二极管在电池中再生。 这可以保护诸如功率转换器的开关元件和平滑电容器的元件抵抗再生电压，并且防止元件被破坏或由于过电压而降低使用寿命。

公开(公告)号：US20140253006A1

公开(公告)日：2014-09-11

申请号：US14202777

申请日：2014-03-10

Applicant: DENSO CORPORATION

Inventor： Takafumi SATOU ,  Takashi SUZUKI

IPC: H02P4/00

CPC classification number: H02P25/22 ,  H02P29/032

Abstract: A power converter is for a rotating electrical machine including first and second winding sets, each of which has coils corresponding to phases of the rotating electrical machine. In the power converter, a first inverter energizes the first winding set, a second inverter energizes the second winding set, a current sensor detects a phase current flowing through each coil, and a control section drives the first and second inverters respectively based on first and second voltage command signals. The first inverter and the first winding set form a first system. The second inverter and the second winding set form a second system. The control section calculates the first and second voltage command signals so that average voltages applied to the first and second winding sets can be different from each other. The failure detector detects whether a short-circuit occurs between the first and second systems based on each phase current.

Abstract translation: 电力转换器是用于包括第一和第二绕组的旋转电机，每个绕组具有对应于旋转电机的相位的线圈。 在功率转换器中，第一变换器使第一绕组组通电，第二变换器对第二绕组组通电，电流传感器检测流过每个线圈的相电流，并且控制部分分别基于第一和第二绕组组驱动第一和第二逆变器， 第二电压指令信号。 第一变频器和第一绕组组形成第一系统。 第二逆变器和第二绕组组形成第二系统。 控制部分计算第一和第二电压指令信号，使得施加到第一和第二绕组的平均电压可以彼此不同。 故障检测器基于每个相电流检测第一和第二系统之间是否发生短路。