Motor power supply

A technology of motor power supply and DC power supply, which is applied in the direction of AC motor control, DC motor speed reduction device, AC motor speed reduction device, etc., can solve the problems of increased motor power supply size and manufacturing cost, etc.

Inactive Publication Date: 2004-08-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the size and manufacturing cos...

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Embodiment Construction

[0026] Embodiments of the present invention will be described in detail below with reference to the accompanying drawings, in which like elements are given like numerals. However, the present invention can be expressed in different forms, and should not be regarded as being limited by the embodiments set forth herein; in addition, such embodiments are provided for the purpose of understanding and implementing the disclosure of the present invention, and for those skilled in the art. That said, the principles of the invention will be fully understood.

[0027] The power supply used by the three-phase motor will be described as an example below.

[0028] figure 2 It is a circuit diagram of a motor power supply of an embodiment of the present invention. Such as figure 2 As shown, a kind of electric motor power supply, it comprises: the alternating current power supply 120 that provides commercial alternating current (110V / 220V); The diode rectifier 130 that rectifies the alt...

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Abstract

A motor power supply including a DC power supply having a pair of power output terminals, and an inverter having a pair of connection terminals connected to the power output terminals of the DC power supply through a pair of power lines, converting power from the DC power supply to supply the converted power to a motor having a plurality of power input terminals, the motor power supply including a braking resistor provided in an additional line connecting the connection terminals with each other; a switching part provided at one of the connection terminals, and selectively connecting the one of the connection terminals with the power output terminal corresponding to the one of the connection terminals, or with the additional line; and a controller controlling the switching part. Components common to both a dynamic braking circuit and the inverter decrease the total size and cost of the motor supply power.

Description

[0001] This application claims the benefit of Korean Patent Application No. 2003-8883 filed with the Korean Intellectual Property Office on February 12, 2003, the disclosure of which is incorporated herein by reference. technical field [0002] The present application relates to a power supply for a motor, which includes: a direct current (DC) power supply with a pair of power output terminals; The terminals are connected, and the inverter converts the electric energy from the DC power supply to provide the transformed electric energy to a motor having a plurality of electric energy input terminals. In particular, it relates to a motor power supply in which components are shared between a dynamic braking circuit and an inverter, thereby reducing the overall size and manufacturing cost of the motor power supply. Background technique [0003] Three-phase motors have three windings and are driven by three-phase power. Such as figure 1 As shown, a motor power supply for a thre...

Claims

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Application Information

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IPC IPC(8): H02P27/06H02P3/12H02P3/22
CPCH02P3/22
Inventor 廉长玹
Owner SAMSUNG ELECTRONICS CO LTD
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