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Variable frequency fan test power supply and testing method used thereby

A frequency conversion fan and power testing technology, which is applied in the direction of motor generator testing, measuring power, measuring devices, etc., can solve the problems of insufficient power testing, high testing efficiency, low testing efficiency, etc., and achieve high production testing efficiency and testing efficiency High, low-cost testing effect

Pending Publication Date: 2018-03-09
ZHEJIANG LINIX MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention solves the problem that the testing of the 310VDC, 15VDC and VSP three-way power supply is not perfect enough in the production of the frequency conversion fan in the existing air purifier, and it is easy to cause a click hazard when the test motor is plugged and unplugged, the power-off speed is slow, and the test efficiency is low. And it is easy to cause damage to the motor and provide a test motor that will not cause electric shock hazards when plugging in and out, has fast power-off speed, high test efficiency, and does not cause damage to the motor. Frequency conversion fan test power supply and its use test method

Method used

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  • Variable frequency fan test power supply and testing method used thereby
  • Variable frequency fan test power supply and testing method used thereby

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1In the illustrated embodiment, a variable frequency fan test power supply includes an AC / DC switching power supply 40, an MCU control processor 30, and a 5-pin power supply / signal line 10 electrically connected to the variable frequency fan 20, and also includes an EMI filter 01 , 1# relay 03, 2# relay 04, 3# relay 05, rectifier bridge pile 02, surge protection circuit 07, controlled voltage stabilization circuit 70, controlled speed regulation circuit 60 and discharge relay, the discharge relay includes 1# discharge Relay 73 and 2# discharge relay 74, after 220VAC / 50Hz single-phase AC power supply L / N enters EMI filter 01, connect 1# relay 03 contact and 2# relay 04 in series on L and N lines of single-phase AC respectively Contact, AC / DC switching power supply 40 is electrically connected to the rear stage of EMI filter 01, the rear stage of 1# relay 03 contact and 2# relay 04 contact are electrically connected to the rectifier bridge stack 02, and the rear s...

Embodiment 2

[0034] A test method for frequency conversion fan test power supply, including if test steps

[0035] a. Insert the frequency conversion fan connector to be tested into the test power supply to match the plug-in connection steps on the connector;

[0036] b. Press the test switch on the test power supply, the MCU outputs a control signal to make the 3# relay 3 contact of the embodiment 1 pull in to disconnect the connection with the discharge resistor, and then make the 1# relay contact of the embodiment 1 pull in , finally make the 2# relay contact of embodiment 1 pull in, the positive 310V voltage of the power supply starts to rise and press the test switch step;

[0037] c. Check whether the positive 310V voltage of the power supply in the 5-pin power supply / signal line is normal. If the voltage is low, it is judged that the power supply is faulty. Disconnect the 1# relay contact and 2# relay contact of Example 1, and then disconnect Open the 3# relay contact of embodiment...

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Abstract

The invention discloses a variable frequency fan test power supply and a testing method used thereby. After being input into an EMI (Electromagnetic Interference) filter, a 220V AC / 50Hz single-phase alternating current power supply is respectively connected in series with a normally open contact of a relay on lines L and N of single-phase alternating current power and then is connected with a bridge rectifier; an AC / DC switching power supply is electrically connected to a backward stage of the EMI filter; a backward stage of the bridge rectifier is connected with a surge protection circuit; abackward stage of the surge protection circuit is connected with a normally open contact of a relay 3#; a backward stage of the contact of the relay 3# is connected with 310V; a discharge resistor isarranged between the contact of the relay 3# and power ground; two discharge relays are arranged at a backward stage of a controlled voltage regulator; a backward stage of the AC / DC switching power supply is electrically connected with the controlled voltage regulator and an MCU (Micro Control Unit) control processor; a backward stage of the MCU control processor is electrically connected with a controlled speed regulation circuit; and a backward stage of the controlled speed regulation circuit is electrically connected with a VSP. The variable frequency fan test power supply is safe in test,fast in power down and high in test efficiency and does not cause damage to a motor.

Description

technical field [0001] The invention relates to a fan power supply, in particular to a power supply for testing a variable frequency fan used in an air purifier and a test method thereof. Background technique [0002] The fan in the air purifier mainly uses a frequency conversion fan, and a centrifugal wind wheel is installed at the shaft end of the motor. After the air is purified by the filter, it is sucked in by the rotating wind wheel from the shaft end of the motor, and the air is discharged from the blade end, thus driving the indoor air. Circular purification. The variable frequency fan is an integrated design product of the motor and the motor driver. The motor is a DC brushless motor, the motor driver is a DC brushless motor driver, 220VAC / 50Hz single-phase AC power supply, the driver adopts a split design, and the power supply EMI filter, rectifier filter, DC / DC power circuit are externally installed, and the inverter And the logic control part is built-in, and t...

Claims

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Application Information

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IPC IPC(8): H02M7/40G01R31/34G01R31/00
CPCH02M7/40G01R31/00G01R31/34
Inventor 蒋伟国金冠军吴晓峰
Owner ZHEJIANG LINIX MOTOR
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