Markov chain controlled random modulation of switching signals in power converters

A method of controlling a switching device in a power converter having an energy storage device which receives an input power from a source and provides an output power to a load, said switching device operable for coupling said input power source to said energy storage device in response to receiving a sequence of control signals, said method comprising the steps of:

• providing a nominal switching signal sequence which achieves steady state between said input power to said converter and said output power supplied to said load;
• modulating said nominal switching signal sequence with a source of non-deterministic signals to produce a time modulated switching signal sequence;
• and
• controlling said modulation in response to determining the previous modifications performed to said nominal switching signal sequence to maintain a predetermined range of deviation between said time modulated switching signal sequence and said nominal switching signal sequence.

A method of controlling a switch utilized in a power converter which includes an energy storage device that receives and converts an input power from a source and provides an output power to a load, said switch operable for coupling said input power source to said energy storage device in response to receiving a sequence of control signals, said method comprising the steps of:

• generating a periodic switching signal sequence with which said converter achieves steady state;
• modulating said periodic switching signal sequence with a non-deterministic timing sequence to produce a non-periodic time modulated switching signal sequence having a set of timing segments;
• and
• limiting the deviation of said time modulated switching signal sequence from said nominal switching signal sequence in accordance with correlating said timing segments with a probability pattern.