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Dedicated thyristor module for soft starters

A soft starter, thyristor technology, applied in starter parts, electric solid devices, semiconductor devices, etc., can solve the problems of large thyristor volume, high heat sink thermal resistance, and high overall cost, so as to improve product reliability and reduce Thermal resistance, weight reduction effect

Inactive Publication Date: 2016-08-03
EASTHOUSE ELECTRICAL TIANJIN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this structure are: the heat sink has high thermal resistance, the thyristor is bulky, and the overall cost is high

Method used

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  • Dedicated thyristor module for soft starters

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Embodiment Construction

[0011] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. Such as figure 1 As shown, a thyristor module dedicated to a soft starter includes two thyristors 1, two radiators 2, and a sealing ring 3. The algorithm of the radiator is as follows:

[0012] W=K*Q*T / β

[0013] Among them: W: the weight of the radiator; K: the reliability factor; Q: the heating power of the thyristor; T: the time for the thyristor to complete when the motor is started; β: the specific heat capacity of the radiator;

[0014] The weight of the radiator is calculated from the above formula, and then the two thyristors are connected in reverse parallel and directly crimped together according to the required shape. The thyristor and the radiator are packaged together in an insulating case, and the radiator is directly connected to an external power terminal and a control terminal.

[0015]...

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Abstract

The invention relates to the technical field of motor soft starter manufacturing, and especially relates to a dedicated thyristor module for soft starters. The thyristor module comprises two thyristors and two radiators, and the two thyristors are reversely connected in parallel and clamped between the two radiators. The weight, size and cost of the radiators are reduced. The radiators achieve three functions, namely, a heat conduction function, a radiating function, and a function of sealing the thyristors and isolating the thyristors from air to prevent oxidation and function failure caused thereby. The radiators are directly and externally connected with a power terminal and a control terminal. The thermal resistance of the thyristors is reduced, the reliability of products is improved, the size of soft starters is reduced, and the cost of products is lowered.

Description

technical field [0001] The invention relates to the technical field of manufacturing soft starters for electric motors, in particular to a special thyristor module for soft starters. Background technique [0002] The traditional soft starter is to purchase ready-made thyristor modules or parallel thyristors, and then add a radiator to form a soft starter power module. Then, the starting voltage of the motor is controlled by controlling the conduction angle of the thyristor through the control circuit, so that the motor can start under the starting condition of soft torque, which has achieved the reduction of the impact of the motor on the power grid. The disadvantages of this structure are: high thermal resistance of the radiator, large volume of the thyristor, and high overall cost. Contents of the invention [0003] The object of the present invention is to invent a new algorithm for the radiator according to the characteristics of the short-time operation of the thyris...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P1/02H01L23/367H01L25/07
CPCH02P1/02H01L23/367H01L25/07
Inventor 韩永清
Owner EASTHOUSE ELECTRICAL TIANJIN CO LTD
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