CPC H02G 7/16 (2013.01) [H05B 3/0004 (2013.01); H05B 3/0023 (2013.01); H05B 2214/02 (2013.01)] | 10 Claims |
1. An online ice melting apparatus, applied for melting ice on a three-phase line, comprising an adjustable reactor, a grounding transformer, a controller, and an auxiliary circuit;
wherein the grounding transformer is electrically connected to the three-phase line and a first terminal of the adjustable reactor separately, the auxiliary circuit is connected between a second terminal of the adjustable reactor and a line of any phase of the three-phase line, and the grounding transformer, the adjustable reactor, the auxiliary circuit, and the line of the any phase of the three-phase line form a first control loop; and
wherein the adjustable reactor comprises a working winding, a control winding, and a short-circuit winding; the working winding is connected between the grounding transformer and the auxiliary circuit, the controller is electrically connected to the control winding and the short-circuit winding separately, and the controller is configured for adjusting a reactance value of the control winding and/or a reactance value of the short-circuit winding to adjust a reactance value of the working winding so as to control a current of the first control loop.
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