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公开(公告)号：US10173551B2
公开(公告)日：2019-01-08
申请号：US14926346
申请日：2015-10-29
Applicant: DENSO CORPORATION
Inventor： Masaki Nishiyama , Hirofumi Yamashita
Abstract: A control apparatus is provided in a rotary electric machine driving system that includes a rotary electric machine for a vehicle and a control unit that controls driving of the rotary electric machine. The apparatus includes a malfunction determination section determining whether or not a system malfunction that requires torque limitation has occurred, a to-be-avoided state determination section determining whether or not the vehicle is in a to-be-avoided state, a torque limitation section limiting an output torque outputted from the rotary electric machine to a limiting torque smaller than a command torque, when the system malfunction is determined to have occurred and the vehicle is not in the to-be-avoided state, and a torque limitation relaxation section permitting the output torque to be a limitation relaxation torque larger than the limiting torque, when the system malfunction is determined to have occurred and the vehicle is in the to-be-avoided state.
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Patent Agency Ranking
2.发明授权Vehicle control system for controlling heat exchange between a motor and a transmission 有权用于控制电动机和变速器之间的热交换的车辆控制系统公开(公告)号：US09365202B2
公开(公告)日：2016-06-14
申请号：US14633613
申请日：2015-02-27
Applicant: DENSO CORPORATION
Inventor： Masaki Nishiyama , Youhei Morimoto , Yutaro Itoh
CPC classification number: B60W10/10 , B60K6/48 , B60K2006/4825 , B60W10/06 , B60W10/08 , B60W20/15 , B60W30/194 , B60W2510/107 , B60W2710/1005 , Y02T10/52 , Y02T10/6221 , Y02T10/6252 , Y02T10/6286 , Y02T10/7077 , Y02T10/7258 , Y02T10/7275
Abstract: When a request of a warming-up of a transmission is generated, a hybrid ECU sets a target input rotational speed of the transmission where a heat loss quantity of a MG becomes maximum, based on a request driving force of a vehicle. In this case, the heat loss quantity is a quantity of a heat loss causing an increasing of a temperature of an ATF in the MG. Thus, the hybrid ECU sets the target input rotational speed where the heat loss quantity becomes maximum and controls the transmission and the MG to output power that meets the request driving force of the vehicle. Since the hybrid ECU controls a torque of the MG, a torque of the engine, and a transmission ratio of the transmission to achieve the target input rotational speed, the hybrid ECU controls the MG, the engine, and the transmission in a condition that the heat loss quantity becomes maximum.
Abstract translation: 当发生变速器预热的请求时，混合动力ECU基于车辆的请求驱动力来设定MG的热损失量变得最大的变速器的目标输入转速。 在这种情况下，热损失量是导致MG中ATF的温度升高的热损失量。 因此，混合动力ECU设定热损失量变得最大的目标输入转速，并且控制变速器和MG输出满足车辆的请求驱动力的输出动力。 由于混合动力ECU控制MG的转矩，发动机的转矩和变速器的变速比以实现目标输入转速，所以混合动力ECU在以下条件下控制MG，发动机和变速器 热损失量变得最大。
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公开(公告)号：US10536101B2
公开(公告)日：2020-01-14
申请号：US16254307
申请日：2019-01-22
Applicant: DENSO CORPORATION
Inventor： Takashi Ogawa , Masaki Nishiyama , Mitsuharu Matsuno
Abstract: In a MG control device, a standard voltage calculation part calculates a d-axis standard voltage Vd_std and a q-axis standard voltage Vq_std to be supplied to a MG. A first magnetic flux change amount estimation value calculation part calculates a first magnetic flux change amount estimation value Δϕ1 based on a deviation of a specific value from the q axis standard voltage Vq_std, where the specific value is obtained by multiplying a ratio (Vd_std/Vd_real) with a q-axis real voltage Vq_real, where Vd_real represents a d-axis real voltage. A second magnetic flux change amount estimation value calculation part calculates a second magnetic flux change amount estimation value Δϕ2 based on a deviation of the q-axis real voltage Vq_real from the q-axis standard voltage Vq_std. The calculation switching part selects one of Δϕ1 and Δϕ2 based on an operation state of the MG.
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公开(公告)号：US09806663B2
公开(公告)日：2017-10-31
申请号：US15235605
申请日：2016-08-12
Applicant: DENSO CORPORATION
Inventor： Xuezhi He , Masaki Nishiyama , Hirofumi Yamashita
Abstract: A motor-generator control part controls driving of a motor-generator, which is a drive power source of a vehicle. A torque limitation part of the MG control part limits a torque of the motor-generator when an element temperature indicating a system temperature increases to be higher than a limitation starting temperature. The torque limitation part continues the torque limitation, which was performed when the element temperature was at a peak temperature, until a limitation continuation period elapses, when the element temperature changes from increasing to decreasing as a result of limiting the torque of the motor-generator. Thus torque variation is suppressed while also suppressing overheating of a motor-generator driving system.
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公开(公告)号：US11065962B2
公开(公告)日：2021-07-20
申请号：US15968891
申请日：2018-05-02
Applicant: DENSO CORPORATION
Inventor： Masaki Nishiyama , Hirofumi Yamashita
Abstract: An inverter ECU is applied to a hybrid vehicle having an engine and a motor generator as drive power source and a motor generator control system. A drive control part generates drive signals for an inverter based on torque request to the motor generator. A temperature information acquiring part acquires an element temperature value and a cooling water temperature value as an inverter temperature value. An abnormality detection part detects whether the inverter temperature value is within a diagnosable temperature range, and performs abnormality detection for the motor generator control system when the inverter temperature value is within the diagnosable temperature range. When the inverter temperature value is not placed within the diagnosable temperature range, the energy supplied to the inverter is adjusted to move the inverter temperature value into the diagnosis allowable temperature range to correctly perform the abnormality detection.
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公开(公告)号：US10594240B2
公开(公告)日：2020-03-17
申请号：US16254281
申请日：2019-01-22
Applicant: DENSO CORPORATION
Inventor： Takashi Ogawa , Masaki Nishiyama , Mitsuharu Matsuno
Abstract: In a MG control device, a standard voltage calculation part calculates a d axis standard voltage and a q axis standard voltage in a standard state in which no demagnetization occurs in permanent magnets of a MG. A magnetic flux change amount estimation value calculation part calculates a basic magnetic flux change amount estimation value based on a deviation of a specific value from the q-axis standard voltage. This specific value is obtained by multiplying q axis real voltage with a ratio of the d axis standard voltage and the d axis real voltage. A magnetic flux change amount estimation value correction part adjusts a magnetic flux change amount estimation value by correcting the basic magnetic flux change amount estimation value relatively to a detection threshold value based on characteristic change of the MG in a demagnetization state of the permanent magnets of the MG.
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