| 摘要 |
The object of the invention is an improved method for regulating the alternating voltage power to be supplied to the load (K) by regulating the phase angle of the alternating voltage (V<SUB>AC</SUB>). The method is applied to the power regulator (1), which has the adjusting unit (2) for setting the phase angle (f), and its control unit (3). According to the invention, two optional states of polarity are arranged for the adjusting unit (2), in which the unit is electrically conducting in opposite directions, i.e. in the forward direction and reverse direction (a, b) in relation to the load, the state of polarity of the unit and thus the direction of conductivity (a, b) being changed synchronically with the frequency of the alternating current source (V<SUB>AC</SUB>) and the change in the state of polarity being performed with the desired phase angle during a period of the alternating current source. The invention also relates to an improved power regulator applicable to the method. |
