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Capacity proportion frequency allocation compensation parallel control strategy based on the multiple synchronous rotating reference coordinates control is proposed to overcome difficulties in the field of high power application. The zero steady-state error compensation is implemented and the overall stability of the system may be improved by the multiple synchronous rotating reference coordinates...
Three-phase shunt active power filter (APF) is often used to compensate the harmonics and reactive current derived from nonlinear loads. But many non-ideal factors, such as the limited bandwidth of current control loop and the time lag of signal acquisition and reference current generation etc, will deteriorate the compensation effect. The traditional proportion-integral (PI) controller cannot be...
Active power filter(APF) based on power electronic technology is currently considered as the most competitive equipment for mitigation of power harmonics.Usually, the configuration of APF is referred to one based on voltage source inverter due to easy implementation.Researches on APF mainly focus on two fields: topologies and control strategies. The topology of APF is decided in the harmonics current...
To solve the problems caused by unbalanced load in industrial fields, two novel methods to extract harmonic current and reactive current and a 2/2 transformation matrix are proposed based on instantaneous power theory, enabling APF to extract base positive sequence current, base negative sequence current and other high order harmonic current correctly and timely, thus we can choice compensation strategy...
A three-phase three-wire shunt active power filter (APF) suitable for parallel operation is proposed in this paper to overcome difficulties in the field of high power applications. This APF can operate independently and compensate the load harmonic current according to its own capacity-limitation. Furthermore, the output current of each APF is optimized so that the APF with large capacity compensates...
A three-phase three-wire shunt active power filter (APF) suitable for parallel operation is proposed in this paper to overcome difficulties in the field of high power applications. This APF can operate independently and compensate the load harmonic current according to its own capacity-limitation. Furthermore, the output current of each APF is optimized so that the APF with large capacity compensates...
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