at least one phase module having a plurality of modules, being electrically connected in series, each of said plurality of modules having a first electrical module connection, a second electrical module connection, a first electronic switching element, a second electronic switching element and an electrical energy store, said at least one phase module further having at least one controllable voltage source for generating a compensation voltage in response to a corresponding actuation, the compensation voltage having a time profile such that the compensation voltage reduces an error voltage generated by a switching of said first electronic switching element and said second electronic switching element of said plurality of modules, wherein the compensation voltage reduces a high-frequency disturbance power generated by the power converter.