摘要:
A drive system (DS) for a land craft comprises a machine system (M1, M2) for driving the land craft, the machine system comprising at least a first and a second electric machine (M1, M2) acting on a common drive shaft (S) for driving the land craft, and a control device (PE, PE1, PE2) which is adapted to control the machine system for operating in at least two rotating speed operation ranges (OR1, OR2) with different rotating speeds of the drive shaft (S). The first electric machine (Ml) is controlled to operate in both rotating speed operation ranges (OR1, OR2) to provide a first drive torque, and the second electric machine (M2) is controlled to operate in only one of the rotating speed operation ranges (OR1) to provide a second drive torque in addition to the first drive torque.
摘要:
A drive system (DS) for a land craft comprises a machine system (M1, M2) for driving the land craft, the machine system comprising at least a first and a second electric machine (M1, M2) acting on a common drive shaft (S) for driving the land craft, and a control device (PE, PE1, PE2) which is adapted to control the machine system for operating in at least two rotating speed operation ranges (OR1, OR2) with different rotating speeds of the drive shaft (S). The first electric machine (MI) is controlled to operate in both rotating speed operation ranges (OR1, OR2) to provide a first drive torque, and the second electric machine (M2) is controlled to operate in only one of the rotating speed operation ranges (OR1) to provide a second drive torque in addition to the first drive torque.
摘要:
An electric drive unit for a motor vehicle, comprising: (a) a stub axle; (b) an electric motor having a stator that is fixed with respect to the stub axle and having a rotor that is rotatably supported with respect to the stub axle; (c) a gear system having its input connected to the rotor for torque transmission; (d) a wheel carrier that is rotatably supported with respect to the stub axle and is connected to the output of the gear system for torque transmission; characterized in (e) that air cooling with air circulation is provided for cooling the rotor of the electric motor; (f) and in that the electric motor has provided therein a heat sink for taking up heat from the circulating air.
摘要:
An electric machine comprises a rotor (200) equipped with permanent magnets (204, 206, 208, 210), and a stator (100) equipped with electromagnetic poles. The electric machine is characterized in that several adjacent electromagnetic poles respectively constitute an electromagnetic pole group in which the adjacent electromagnetic poles are spaced apart at a first electromagnetic pole spacing, that adjacent electromagnetic poles belonging to different electromagnetic pole groups are spaced apart at an electromagnetic pole spacing greater than said first electromagnetic pole spacing, that each electromagnetic pole group has an even number of electromagnetic poles, and that adjacent electromagnetic poles of an electromagnetic pole group are linked to each other so as to generate magnetic fields of opposite direction in operation.
摘要:
An electric machine comprises a rotor (200) equipped with permanent magnets (204, 206, 208, 210), and a stator (100) equipped with electromagnetic poles. The electric machine is characterized in that several adjacent electromagnetic poles respectively constitute an electromagnetic pole group in which the adjacent electromagnetic poles are spaced apart at a first electromagnetic pole spacing, that adjacent electromagnetic poles belonging to different electromagnetic pole groups are spaced apart at an electromagnetic pole spacing greater than said first electromagnetic pole spacing, that each electromagnetic pole group has an even number of electromagnetic poles, and that adjacent electromagnetic poles of an electromagnetic pole group are linked to each other so as to generate magnetic fields of opposite direction in operation.
摘要:
An electric drive unit for a motor vehicle, comprising: (a) a stub axle; (b) an electric motor having a stator that is fixed with respect to the stub axle and having a rotor that is rotatably supported with respect to the stub axle; (c) a gear system having its input connected to the rotor for torque transmission; (d) a wheel carrier that is rotatably supported with respect to the stub axle and is connected to the output of the gear system for torque transmission; characterized in (e) that air cooling with air circulation is provided for cooling the rotor of the electric motor; (f) and in that the electric motor has provided therein a heat sink for taking up heat from the circulating air.
摘要:
An electric drive unit for a motor vehicle comprises an electric motor having a motor housing, a stator mounted in the motor housing and having coil-wound poles, a rotor arranged internally of the stator with an air gap present between the stator and the rotor, and a planetary gear system having a sun wheel, a planet carrier, planet wheels and a ring gear. The planet wheels have a maximum diameter and axial positioning that an imaginary common envelope cylinder for all maximum diameters of the planet wheels is located radially inside of the winding heads present on one axial side of the stator and axially beside the portion of the rotor adjoining the air gap and that the planet wheels project in axial direction outwardly beyond said winding heads either not at all or with less than 50% of their tooth width in engagement with the sun wheel.
摘要:
The invention relates to a method of producing a rotor (10) of an electric machine, the rotor (10) comprising a rotor body (14) adapted to be rotated about a rotor axis (A) as well as at least one rotor component (16) to be mounted to the rotor body (14), said method comprising the steps of: arranging the rotor component (16) on the rotor body (14) and winding a wire-like structure (20) around an outer circumference (12) of the rotor body having the rotor component (16) arranged thereon so as to form a bandage (18), with the wire-like structure (20) during winding thereof being held under an adjustable bias.
摘要:
An electric drive unit for a motor vehicle comprises an electric motor having a motor housing, a stator mounted in the motor housing and having coil-wound poles, a rotor arranged internally of the stator with an air gap present between the stator and the rotor, and a planetary gear system having a sun wheel, a planet carrier, planet wheels and a ring gear. The planet wheels have a maximum diameter and axial positioning that an imaginary common envelope cylinder for all maximum diameters of the planet wheels is located radially inside of the winding heads present on one axial side of the stator and axially beside the portion of the rotor adjoining the air gap and that the planet wheels project in axial direction outwardly beyond said winding heads either not at all or with less than 50% of their tooth width in engagement with the sun wheel.