Fault diagnostics arrangement for electric drive system, and electric drive system
A technology of fault diagnosis device and electric driver, applied in general control system, selection device, control/regulation system, etc., can solve problems such as laborious connection, difficult time sequence analysis of fault recorder data, and no reliable image of electric driver.
Inactive Publication Date: 2012-01-18
ABB TECH AG
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Problems solved by technology
[0016] Existing fault diagnosis devices for electric drives have some major disadvantages
Large numbers of connections are laborious and complex in troubleshooting situations
Furthermore, prior art fault diagnosis devices do not give a reliable picture of the fault situation on the main system level of the electric drive
It has been noted that in a fault checking situation it is difficult to analyze and place fault recorder data of subsystem specific control boards 21 to 26 in chronological order
In prior art electric drive systems it is difficult to tell how the fault occurred and progressed and also which part of the electric drive is damaged and which is not
Method used
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Embodiment Construction
[0031] Figure 4A fault diagnosis device for an electric drive of an embodiment of the present invention is shown. The electric drive of the present invention includes a power source 28 , a frequency converter 29 and a load 30 . The load 30 can be, for example, an electric motor 30 . The frequency converter 29 includes a rectifier unit 31 , a direct voltage intermediate circuit 32 and an inverter unit 33 . The rectifier unit 31 of the frequency converter 29 of the electric drive of the invention converts the AC voltage from the power supply 28 into a DC voltage. For example, the frequency converter 29 can be rectified by means of a 6-pulse diode bridge. The direct voltage obtained from the rectifier unit 31 of the frequency converter 29 is stored in a direct voltage intermediate circuit 32 as an energy store. Generally, the DC voltage intermediate circuit 32 of the frequency converter 29 can be implemented by means of energy storage capacitors. From the direct current of ...
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The invention discloses a fault diagnostics arrangement for an electric drive system, and an electric drive system. The present invention relates to industrial electric drives, such as electric drives for turbines in wind power industry or electric drives for solar power industry, and particularly to fault diagnostics for electric drive systems. In a fault diagnostics arrangement of the invention, one of the control boards (36 to 39), (51 to 58), (66 to 77) of the electric drive system serves as a main control board (36), (55), (70), (74) of the electric drive system to which event data of the subsystems (31), (33 to 35), (49 to 50), (64 to 65) are transferred from the control boards (37 to 39), (51 to 54), (56 to 58), (66 to 69) of the subsystems by means of a data transfer medium (40). The fault diagnostics solution of the invention enables to significantly facilitate the analysis of fault logger data in a fault examination situation, for example.
Description
technical field [0001] The present invention relates to industrial electric drives, eg for wind power industrial turbines or for the solar industry, and in particular to fault diagnosis for electric drive systems. Background technique [0002] Industrial electric drives are used in various applications, eg in transport vehicle engines, in different process and manufacturing technology equipment and in the energy industry. For transport equipment, electric drives can be used, for example, in subway services or shipping services. In process and manufacturing technology, for example, electric drives can be used, for example, in conveyors, mixers or in paper machines. In the energy industry, electric drives can be used, for example, in turbines in the wind power industry or in the solar industry. [0003] The most common types of electric drives are DC drives and AC drives. In DC applications, current flowing through the field winding of the motor stator generates a magnetic ...
Claims
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IPC IPC(8): G05B19/418
CPCH04Q2209/30H04Q9/00G05B19/048G05B23/0205
Inventor 奥斯莫·帕苏里约尔马·凯罗宁雷约·弗塔嫩
Owner ABB TECH AG