Initial speed detecting method for outdoor fan of DC (direct current) inverter air conditioner

Initial speed detecting method for outdoor fan of DC (direct current) inverter air conditioner

The invention relates to an initial speed detecting method for an outdoor fan of a DC inverter air conditioner. The outdoor fan of the DC inverter air conditioner adopts a FOC control algorithm, comprising the following steps of: S1, setting a cross-axis target current IqReg and a direct-axis target...

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1. Verfasser: SUN LUFENG
Format: Patent
Sprache:chi ; eng
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INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
MEASURING
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK
PHYSICS
TESTING
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creator SUN LUFENG
description The invention relates to an initial speed detecting method for an outdoor fan of a DC inverter air conditioner. The outdoor fan of the DC inverter air conditioner adopts a FOC control algorithm, comprising the following steps of: S1, setting a cross-axis target current IqReg and a direct-axis target current IdReg equal to 0, and operating a speed loop in an open-loop mode and a current loop in a closed-loop mode; S2, detecting and obtaining a voltage value V[alpha] output by a fan [alpha]-axis and a voltage value V[beta] output by a fan [beta]-axis; S3, passing the V[alpha] and V[beta] througha phase-locked loop module, and outputting an electrical angular velocity [omega] of a signal; S4, converting the electric angular velocity [omega] to obtain an initial speed Speed 0 of the fan. Themethod can effectively detect the initial speed of the fan through a software program without adding any hardware cost according to an application situation of a sensorless position of the outdoor fanof a DC inverter air condi
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The outdoor fan of the DC inverter air conditioner adopts a FOC control algorithm, comprising the following steps of: S1, setting a cross-axis target current IqReg and a direct-axis target current IdReg equal to 0, and operating a speed loop in an open-loop mode and a current loop in a closed-loop mode; S2, detecting and obtaining a voltage value V[alpha] output by a fan [alpha]-axis and a voltage value V[beta] output by a fan [beta]-axis; S3, passing the V[alpha] and V[beta] througha phase-locked loop module, and outputting an electrical angular velocity [omega] of a signal; S4, converting the electric angular velocity [omega] to obtain an initial speed Speed 0 of the fan. 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subjects INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
MEASURING
MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION,OR SHOCK
PHYSICS
TESTING
title Initial speed detecting method for outdoor fan of DC (direct current) inverter air conditioner
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