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Motor apparatus for switch drive of electric switch and method for operation thereof

A technology of switch drive and electrical switch, which is applied to the power device, electric switch, AC motor control and other directions inside the switch, can solve the problems of increasing the cost of installing the motor and the error rate, and achieve the effect of reducing the modification cost and the error probability.

Pending Publication Date: 2021-04-30
SIEMENS ENERGY GLOBAL GMBH CO & KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Component differences and wiring differences increase the cost and error rate of installing the motor

Method used

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  • Motor apparatus for switch drive of electric switch and method for operation thereof
  • Motor apparatus for switch drive of electric switch and method for operation thereof
  • Motor apparatus for switch drive of electric switch and method for operation thereof

Examples

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Embodiment Construction

[0033] figure 1 A block diagram of a switch drive mechanism 10 of an electrical switch and a motor arrangement 12 for the switch drive mechanism 10 is shown. The motor system 12 has an electric motor 14 that can be operated with direct current and an electronic control unit 16 for controlling the electric motor 14 . In the example shown, the switching drive 10 is a spring-loaded drive and has a spring 18 , a tensioning wheel 20 , a coupling element 22 connecting the spring 18 to the tensioning wheel 20 , a locking unit 24 and a triggering unit 26 . The electric motor 14 capable of operating with direct current may be a universal direct current motor, a series excited direct current motor, a shunt excited direct current motor or a permanently excited direct current motor. For simplicity, it will be simply referred to as the electric motor 14 hereinafter.

[0034] The electric motor 14 is coupled to the tensioning wheel 20 via a transmission 28 in order to rotate the tensioni...

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PUM

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Abstract

The invention relates to a motor apparatus (12) for a switch drive (10) of an electric switch, having an electric motor (14) and a control apparatus (16) for controlling the electric motor (14). The control apparatus (16) has a rectifier unit (34) for rectifying a supply voltage (U0) of the motor apparatus (12), if the supply voltage (U0) is an alternating voltage, and for reverse polarity protection if the supply voltage (U0) is a direct voltage, a voltage measurement unit (36) for collecting the supply voltage (U0) or a rectifier output voltage of the rectifier unit (34), a switch unit (38, 62) for generating a drive voltage (Uou) for the electric motor (14) from the supply voltage (U0) or from the rectifier output voltage; and a control unit (44) for controlling the switch unit (36, 62) as a function of the supply or rectifier output voltage (U0, Ui) detected. According to the invention, the electric motor (14) is an electric motor (14) which is operable by direct current, and the switch unit (38, 62) is a switch unit (38, 62) for generating a drive direct voltage (Uou) for the electric motor (14) which is operable by direct current. The invention also relates to a corresponding method.

Description

technical field [0001] The invention relates to an electric motor arrangement for a switch drive of an electrical switch and to a method for operating such an electric motor arrangement. Background technique [0002] Electrical switches used to close or break current paths for medium and high voltages and currents require significant mechanical energy to move the switch's switching contacts. [0003] For example, a switch actuation mechanism with stored mechanical energy, such as a spring stored energy actuation mechanism, is commonly used to move the switch contacts of a circuit breaker. In spring stored-energy drives, an electric motor is usually used to tension a spring, for example a helical spring, via a transmission. The spring is locked against voluntary relaxation so that energy remains stored in the spring. By triggering the device, the stored energy can be released by releasing the lock of the spring, causing the spring to relax. Thereby, the switching operation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H3/26H02P6/08H02P7/29
CPCH01H3/26H01H2003/266H01H3/3005H02P7/29H02H7/085H02H3/093H02H11/002H02P27/08
Inventor D.布鲁蒙德T.希尔克
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG
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