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公开(公告)号：US08928260B2
公开(公告)日：2015-01-06
申请号：US13655019
申请日：2012-10-18
申请人： Caterpillar Inc.
IPC分类号： H02P3/00
CPC分类号： H02P23/14 , B60L3/10 , H02P21/141 , H02P21/16 , H02P23/0077 , H02P2205/03 , H02P2205/05 , Y02T10/7258
摘要： A traction motor system calculates motor flux by generating a real time effective resistance of a resistance grid calculated from motor torque and measured voltage on a DC link. Calculating effective resistance avoids solely relying on DC link voltage, which can be influenced by conditions such as wheel slip and drop out of one or more resistance grids. The effective resistance calculation is based on nominal motor values using known power levels and conditions. From these nominal values and the effective resistance, various scaling factors based on actual motor power can be generated and used to adjust a nominal flux reference to more accurately reflect actual motor flux. The scaling factors include power and torque scaling factors and a resistance scaling factor that is active during conditions such as wheel slip.
摘要翻译： 牵引电动机系统通过产生由电动机转矩和DC链路上的测量电压计算的电阻网格的实时有效电阻来计算电动机通量。 计算有效电阻只能依赖于直流母线电压，这可能受到诸如车轮滑移和掉落一个或多个电阻网格等因素的影响。 有效电阻计算基于使用已知功率电平和条件的电机额定值。 根据这些标称值和有效电阻，可以生成基于实际电机功率的各种缩放因子，并用于调整额定通量参考值，以更精确地反映实际的电机通量。 缩放因子包括功率和扭矩缩放因子以及在诸如车轮滑移的条件下有效的阻力比例因子。
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公开(公告)号：US09344028B2
公开(公告)日：2016-05-17
申请号：US14516230
申请日：2014-10-16
申请人： Caterpillar Inc.
CPC分类号： H02P23/14 , B60L3/10 , H02P21/141 , H02P21/16 , H02P23/0077 , H02P2205/03 , H02P2205/05 , Y02T10/7258
摘要： A traction motor system calculates motor flux by generating a real time effective resistance of a resistance grid calculated from motor torque and measured voltage on a DC link. Calculating effective resistance avoids solely relying on DC link voltage, which can be influenced by conditions such as wheel slip and drop out of one or more resistance grids. The effective resistance calculation is based on nominal motor values using known power levels and conditions. From these nominal values and the effective resistance, various scaling factors based on actual motor power can be generated and used to adjust a nominal flux reference to more accurately reflect actual motor flux. The scaling factors include power and torque scaling factors and a resistance scaling factor that is active during conditions such as wheel slip.
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公开(公告)号：US20140111125A1
公开(公告)日：2014-04-24
申请号：US13655019
申请日：2012-10-18
申请人： CATERPILLAR INC.
CPC分类号： H02P23/14 , B60L3/10 , H02P21/141 , H02P21/16 , H02P23/0077 , H02P2205/03 , H02P2205/05 , Y02T10/7258
摘要： A traction motor system calculates motor flux by generating a real time effective resistance of a resistance grid calculated from motor torque and measured voltage on a DC link. Calculating effective resistance avoids solely relying on DC link voltage, which can be influenced by conditions such as wheel slip and drop out of one or more resistance grids. The effective resistance calculation is based on nominal motor values using known power levels and conditions. From these nominal values and the effective resistance, various scaling factors based on actual motor power can be generated and used to adjust a nominal flux reference to more accurately reflect actual motor flux. The scaling factors include power and torque scaling factors and a resistance scaling factor that is active during conditions such as wheel slip.
摘要翻译： 牵引电动机系统通过产生由电动机转矩和DC链路上的测量电压计算的电阻网格的实时有效电阻来计算电动机通量。 计算有效电阻只能依赖于直流母线电压，这可能受到诸如车轮滑移和掉落一个或多个电阻网格等因素的影响。 有效电阻计算基于使用已知功率电平和条件的电机额定值。 根据这些标称值和有效电阻，可以生成基于实际电机功率的各种缩放因子，并用于调整额定通量参考值，以更精确地反映实际的电机通量。 缩放因子包括功率和扭矩缩放因子以及在诸如车轮滑移的条件下有效的阻力比例因子。
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公开(公告)号：US20150028782A1
公开(公告)日：2015-01-29
申请号：US14516230
申请日：2014-10-16
申请人： Caterpillar Inc.
CPC分类号： H02P23/14 , B60L3/10 , H02P21/141 , H02P21/16 , H02P23/0077 , H02P2205/03 , H02P2205/05 , Y02T10/7258
摘要： A traction motor system calculates motor flux by generating a real time effective resistance of a resistance grid calculated from motor torque and measured voltage on a DC link. Calculating effective resistance avoids solely relying on DC link voltage, which can be influenced by conditions such as wheel slip and drop out of one or more resistance grids. The effective resistance calculation is based on nominal motor values using known power levels and conditions. From these nominal values and the effective resistance, various scaling factors based on actual motor power can be generated and used to adjust a nominal flux reference to more accurately reflect actual motor flux. The scaling factors include power and torque scaling factors and a resistance scaling factor that is active during conditions such as wheel slip.
摘要翻译： 牵引电动机系统通过产生由电动机转矩和DC链路上的测量电压计算的电阻网格的实时有效电阻来计算电动机通量。 计算有效电阻只能依赖于直流母线电压，这可能受到诸如车轮滑移和掉落一个或多个电阻网格等因素的影响。 有效电阻计算基于使用已知功率电平和条件的电机额定值。 根据这些标称值和有效电阻，可以生成基于实际电机功率的各种缩放因子，并用于调整额定通量参考值，以更精确地反映实际的电机通量。 缩放因子包括功率和转矩缩放因子以及在诸如车轮滑移的条件下有效的阻力比例因子。
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