Variable frequency driving control method and device for high-power mine hoist

Variable frequency driving control method and device for high-power mine hoist

  • CN 102,006,010 A
  • Filed: 12/23/2010
  • Published: 04/06/2011
  • Est. Priority Date: 12/23/2010
  • Status: Active Application
First Claim
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1. the control method of a high-power mine hoist frequency conversion drive may further comprise the steps:

  • 1) current detection circuit is measured the stator current of inverter output , , and utilize formula Calculate stator current , process Clarke conversion and Park conversion are with stator current , , Be transformed into the DC component in the rotating coordinate system , , , Amount of negative feedback as electric current loop;

    2) utilize speed detect circuit to measure the rotating speed of motor , with rotating speed And rotating speed With given rotating speed Deviation as the input of speed pi regulator, the output of speed pi regulator is used for the electric current T axle reference component of torque control 3) with DC component , And rotating speed , input rotor flux position computation module is obtained the rotor flux position;

    4) with electric current T axle reference component With the current feedback amount Deviation and Deliver to the input of current PI adjuster respectively, the current PI adjuster is exported the phase voltage component of M, T rotating coordinate system respectively With 5) with the phase voltage component , Convert to by the Park inverse transformation with the magnetic linkage position , The component of the stator phase voltage vector of rectangular coordinate system With 6) according to the component of phase voltage vector With , produce pwm control signal by the space vector of voltage module and come control inverter.

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