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Apparatus and method for controlling the motor power

一种电机器、控制器的技术，应用在电动机控制、交流电动机控制、控制系统等方向，能够解决热量驱散、增加成本、增大半导体模块设计电流容量等问题，达到提高电流容量的效果

Inactive Publication Date: 2009-12-30
KONE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this case, the heat sink again cannot dissipate enough heat to the environment, but the local heating of the semiconductor modules caused by this point-like source of power dissipation limits the current capacity of the semiconductor modules
This has the consequence that if it is necessary for a semiconductor module with lower power dissipation, the design current capacity of the semiconductor module must be increased, which means increased costs

Method used

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  • Apparatus and method for controlling the motor power
  • Apparatus and method for controlling the motor power
  • Apparatus and method for controlling the motor power

Examples

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Embodiment Construction

[0051] figure 1 A power control arrangement according to the invention is shown. The power control device comprises a mains converter 4 and an inductor unit 20 connected to the mains converter. The mains converter and the load-side converter 5 are connected to a common DC voltage intermediate circuit 13 . The direct voltage intermediate circuit has a capacitor 15 as an energy store. Also connected to the direct voltage intermediate circuit is a DC-DC chopper 6 which supplies energy between the established direct voltage intermediate circuit 13 and an energy source 19 . The load-side converter 5 supplies the electric motor 1 with a voltage that varies in frequency and amplitude. During acceleration of the electric motor, the power control device controlled by the mains converter control (16A) supplies power from the mains network 2 via the mains converter 4 to the direct voltage intermediate circuit 13, and further, by the load-side converter control The power control devic...

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PUM

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Abstract

The invention concerns a power control apparatus and a method for supplying power between an electric machine (1) and an energy source (2, 19). The power control apparatus contains at least two converters (4, 5, 6) comprising a plurality of switches (3), at least some of which switches belong to a set of switch modules (8, 9, 10) comprising a plurality of switches. In the method of the invention, a first set of switches (3) belonging to at least two different modules and arranged to form a first converter (4) is controlled by a first converter control (16A), and a second set of switches arranged to form a second converter (5) is controlled by a second converter control (16B).

Description

technical field [0001] The invention relates to a power control device as defined in the preamble of claim 1 and to a method for controlling a power control device as defined in the preamble of claim 15 . Background technique [0002] Modern motor power control devices supply power bi-directionally between the supply network and an electric power machine such as an electric motor. The control device comprises: a mains inverter for converting the supply network voltage into a direct voltage; and a load-side inverter through which the direct voltage is converted into a variable voltage for the electric motor. AC voltage of amplitude and frequency. The load-side converter supplies power between the DC voltage intermediate circuit of the power control device and the electric motor, and the mains converter supplies power between the supply network and the DC voltage intermediate circuit. [0003] The magnitude of the current flowing through the switches of the mains converter a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P27/04H02M5/44B66B1/28
CPCH02P29/027H01L2924/0002H02P2201/03H02P29/0088H05K7/209H02P27/06B66B1/30H01L23/36H02P29/68H01L2924/00B66B1/28H02M5/44H02P27/04
Inventor 佩卡·杰科南
Owner KONE CORP