The present invention provides a method and device for controlling the n LLM coils (L1, . . . Ln) of an LLM
stator making it possible to change the polarity of the coil
voltage (UL1, . . . , ULn) of the n LLM coils (L1, . . . Ln) more easily and with little
circuit complexity. It is proposed to apply a first operating potential (Ub1) to n first input terminals (A1, . . . , An) of n half bridges (HB1, . . . , HBn), and apply a second operating potential (Ub2) to n second input terminals (B1, . . . , Bn) of the n half bridges. For each
half bridge (HB1, . . . HBn), a first switch (S11, . . . , S1n) is connected between a center point (C1, . . . , Cn) of the respective
half bridge (HB1, . . . , HBn) and the first input terminal (A1, . . . , An), and a second switch (S21, . . . , S2n) is connected between the center point (C1, . . . , Cn) of the relevant
half bridge (HB1, . . . , HBn) and the second input terminal (B1, . . . , Bn). The center point (C1, . . . , Cn) of the n half bridges is connected in each case to n first terminals (L11, . . . , L1n) of the n LLM coils (L1, . . . , Ln), and the second terminals (L11, . . . , L1n) of the n LLM coils (L1, . . . , Ln) are connected in a
control point (C) that is regulated to a predetermined potential (Ux).