CONTROL OF LONG STATOR LINEAR MOTOR COILS OF A LONG STATOR LINEAR MOTOR STATOR

摘要

In order to provide a method and a device for driving the n LLM coils (L1,... In) of an LLM stator, which allows the polarity of the coil voltage (UL1,..., ULn) with less effort and in a circuit-technically simple manner ) of the n LLM coils (L1, ..., Ln), it is proposed to apply a first operating potential (Ub1) to n first input terminals (A1, ..., An) of n half-bridges (HB1, ..., HBn ) to 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 midpoint (C1,..., Cn) of the respective half bridge (HB1,..., HBn) and the first half bridge Input terminal (A1, ..., An) connected and a respective second switch (S21, ..., S2n) between the center (C1, ..., Cn) of the respective half-bridge (HB1, ..., HBn) and the second input terminal (B1, ..., Bn). The midpoint (C1, ..., Cn) of the n half-bridges is respectively connected to n first terminals (L11, ..., L1n) of the n LLM coils (L1, ..., Ln), the second terminals (L11 , ..., L1n) of the n LLM coils (L1, ..., Ln) are connected in a control point (C), which is regulated to a predetermined potential (Ux).