[en] It is inevitable to control plasma current and plasma position for maintaining the equilibrium of plasma. However, synthetic magnetic fields formed by polloidal coil magnetic field coil groups have a close relation with the position and the shape of the plasmas, and the position and the shape fluctuate while undergoing mutual effects. Then, in order to decrease the mutual interference between the control amount of the plasmas, a non-interactive element circuit is disposed between a steady deviation compensation circuit and a control function circuit. Then, the calculated values for the operation amount are provided as those in consideration for the state and the influence of each of the control amounts of plasmas, and a coil current value calculated in the control function circuit is given as an optimum value. Accordingly, the position and the shape as the plasma control amount can be controlled stably and at a high speed with no influences of mutual interference between each of the plasma control amounts. Further, it is possible to keep the plasma temperature high, and plasmas can be controlled continuously and smoothly by using a hybrid coil system. (N.H.)