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Relay driving device

A driving device and relay technology, applied in the field of solar photovoltaic power generation, can solve the problems of ignition damage of relay contacts, high cost of solid-state switches, difficult feedback of protection, etc., and achieve high reliability, low cost, and prevent overload operation.

Inactive Publication Date: 2016-05-11
SUZHOU JSOLAR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Using a relay to switch and control the motor is likely to cause ignition damage to the relay contacts; the use of a solid-state switch is costly, complicated to control, and difficult to feedback for protection

Method used

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  • Relay driving device

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Embodiment Construction

[0023] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0024] see figure 1 As shown, the above-mentioned relay driving device is used to drive the motor 1101 to rotate forward, reverse and stop. The relay driving device includes:

[0025] A power supply 101 , a thyristor 201 connected to the positive pole of the power supply 101 , a first relay 301 , a second relay 401 , and a control unit 501 .

[0026] In this embodiment, the type of the thyristor 201 is IRF4905, and the voltage of the power supply 101 is DC9V-36V.

[0027] The control unit 501 is used to control the turn-on and turn-off of the thyristor 201 , and the control unit 501 is also used to control the pull-in and release of the first relay 301 and the second relay 401 .

[0028] When the first relay 301 is turned on, it is used to drive the motor 1101 to rotate forward. The first relay 301 includes a first normally open contact, a f...

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Abstract

The invention discloses a relay driving device. The relay driving device is used for driving a motor to positively rotate, reversely rotate and stop. In the relay driving device, the on / off time of a thyristor, a first relay and a second relay is staggered by a control unit, and a contact is prevented from being damaged in a relay switching state; and with the adoption of a current detection unit and an operational protection unit, the overload running of the motor is effectively prevented. The relay driving device is high in reliability and integration and relatively low in cost, and the installation space is reduced.

Description

technical field [0001] The invention relates to the field of solar photovoltaic power generation, in particular to a relay driving device. Background technique [0002] With the development of modern industry, the global energy crisis and air pollution problems have become increasingly prominent, and the use of solar trackers to provide energy and power generation efficiency has attracted more and more attention. [0003] In solar photovoltaic power generation, since the power generation efficiency of trackers is higher than that of fixed supports, many power stations use tracking controllers to drive motors to track the sun. In the existing tracking controllers, relay switching is generally used to control the forward and reverse operation of the motor, or a solid-state switch is used to drive the motor to act. The use of relays to switch and control the motor is likely to cause ignition damage to the relay contacts; the use of solid-state switches is costly, complicated t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H7/085
CPCH02H7/0856
Inventor 施秋东朱超彭程
Owner SUZHOU JSOLAR INC