| Abstract |
The paper deals with the new method of analysis,
synthesis and experimentation of single-phase power active
filters. By using a new particular transformation theory, the
ordinary single-phase system can be transformed into an
equivalent two-axes orthogonal one. The new original thought
is based on the idea that ordinary single-phase quantity can be
complemented by fictitious second phase so that both of them
will create an orthogonal system, as is usual in three-phase
systems, in spite of [1]. Application of the above theory makes it
possible to use complex methods of analysis as the
instantaneous reactive power method, which have not been
usable for single-phase systems so far. Both, the active and
reactive powers can be determined by this way. Practical
application of the method is outlined for the case of reference
current determination for single-phase power active filter. The
paper shows some examples of the simulation verification
results, which proved a high accuracy and extremely fast
response of the single-phase active filter with control, based on
the introduced method. The effectiveness of proposed control
algorithm is also demonstrated by experimental results, which
were carried out on the single – phase active parallel filter,
power rate of 25 kVA and controlled by 32 – bit floating point
digital signal processor TMS 320C31. |
