Method for operating an electrical machine and electrical machine which operates according to the method
A drive system and motor technology, applied in motor control, AC motor control, control system, etc., can solve the problems of motor function damage to the drive system, affecting the operation cost of the drive system, product quality and operation safety, and easy failure of the motor drive system. , to achieve the effect of effective operation and safe operation
Inactive Publication Date: 2019-06-21
BAUMULLER NURNBERG GMBH
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- Description
- Claims
- Application Information
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Problems solved by technology
[0005] Despite regular maintenance and repairs, electric motor drive systems are prone to failure
Malfunctions of individual electric motors leading to undesired damage to the motor function often lead to adverse effects on the entire drive system.
This adversely affects the operating costs, product quality and operating safety of the drive system
Method used
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Embodiment Construction
[0081] figure 1 The electric motor drive system 2 is shown in schematic fragments. The drive system 2 has at least one electric motor 4 . motor 4 infigure 1 The embodiments are configured as synchronous or asynchronous motors for alternating current operation. Drive system 2 also has a current converter 6 for operating electric motor 4 . Drive system 2 additionally has a controller 8 as a control device, which actuates and / or regulates at least one current converter 6 by means of control and / or regulating signals S. It is also conceivable here, for example, for the controller 8 to be integrated as a motor control unit integrated into the electric motor 4 or as a current converter control unit integrated into the current converter 6 .
[0082] The current converter 6 is connected as an inverter to a supply or DC voltage network 10 , not shown in detail, of the drive system 2 . For this purpose, the current converter 6 comprises two network-side connections 12 a , 12 b for c...
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The invention relates to a method for operating an electric motor drive system (2) and to an electric motor drive system operating according to same. The motor drive system has a motor (4). An operating state parameter (Iu, Iv, Iw) of the electric motor (4) is detected. A spatial vector (R, R') is determined by means of an operating state variable (Iu, Iv, Iw). A position curve (O) is generated asa digital image data set (78) from the temporal profile of the spatial vector (R, R'). The system is provided with a machine learning method (42); in the learning phase, a number of position curves for different known operating states of the electric motor (4) are trained as reference curves (Refn) for machine learning methods. A position curve (O) for determining the current actual operating state of the electric motor (4) is evaluated in a characteristic comparison (44) by means of a machine learning method (42) with a number of reference curves (Refn). The electric motor (4) is controlledand / or adjusted by means of a characteristic comparison (44).
Description
technical field [0001] The invention relates to a method for operating a motor drive system with at least one electric motor. The invention also relates to a motor drive system operating or operating according to such a method. Background technique [0002] An electric motor drive system of the type mentioned at the outset comprises, for example, a converter, in particular a frequency converter, which is connected to a supply network and has a direct current intermediate circuit for supplying an intermediate circuit voltage for a certain number of electric motors. In this case, the electric motor is connected to the intermediate circuit voltage as an alternating current motor by means of a controlled current converter or inverter, in particular in a parallel circuit. The (motor) current converter generally includes a number of semiconductor switches which, as a controlled bridge circuit, convert the intermediate circuit voltage, for example, into a three-phase motor voltage...
Claims
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IPC IPC(8): H02P23/00H02P27/06H02P27/12
CPCH02P21/0014H02P29/0241
Inventor 安德拉斯·莱尔凯什
Owner BAUMULLER NURNBERG GMBH