A method for controlling the operation of a converter (300) to provide a multi-level output voltage for a load is described. This method comprises the steps of: determining whether the load is operating under a first condition or the second condition and, on determining that this load is operating under the first condition, generating a first pulse signal (326) after and selecting at least one of at least three different current paths, such that the same output voltage is provided in any of the current paths. The method further comprises generating a second pulse signal (328) on determining that the load is operating under the second condition, such that the converter (300) can perform the regular energy conversion operations.