Table 2 Comparison of various control algorithms.

Compensation

Objectives

Generalized approach of

PQ, SRF etc.

EP and EC SDM, ISCT

Proposed Modified

Instantaneous IRP p-q Algorithm

Power factor (PF)

PF cannot be set directly

to any desired value

Operation is limited to only

unity power factor

PF can be explicitly set

to any desired value

Harmonic compensation

(1) Provides harmonic

compensation only under

balanced source voltage

conditions

(2) Not viable under

unbalanced and distorted

source as well as load

conditions

(1) Harmonic compensation

can be achieved only under

source magnitude unbalance

(2) Fails under phase

unbalance and distorted

source conditions

Under all the source voltage

conditions, it provides

excellent harmonic compensation

along with unbalanced and

distorted load conditions

Computational complexities

Uses complex transformations

Does not require any transformation

Comparatively easy to

implement with lesser

transformations

Performance under various

source conditions

(1) Basically developed to

operate under the balanced

source condition

(2) Not feasible, when source

is unbalanced and distorted

(1) Can work effectively

when magnitude unbalance

exist in the source voltage.

(2) Unable to operate under

source phase unbalance as

well as distorted condition

Provides excellent

compensation profile under

the magnitude and phase

unbalance, including

distortions in the source

voltages with unbalanced

and non-linear load