The utility model provides a modular current converter component used for IGBT modules connected in series, which comprises valve arms and laminated bus bars which are vertically connected, the phase number of the valve arm is three phases; two single cabinets are vertically arranged at lower side surface of each valve which is laterally arranged; the single cabinets are symmetrically arranged at two sides of the laminated bus bar; and ] capacitor cells are connected to the valve arm at the top end through the laminated bus bars. Compared with the prior art, the modular current converter component used for IGBT modules connected in series has the advantages of convenient maintenance and strong expansibility, can greatly reduce leads and parasitic inductance, and can ensure the safe, reliable and stable operation of the current converter devices.