Active power line conditioner with a derived load current fundamental signal for fast dynamic response

An active power line conditioner comprising:

• a series inverter coupled to an energy input source which delivers an input voltage;
• a parallel inverter coupled to a load which receives a load current which includes a fundamental component;
• an energy storage element electrically connected between said series inverter and said parallel inverter;
• means for deriving a load current fundamental signal corresponding to said fundamental component of said load current;
• means for establishing an active power line conditioner voltage output/input ratio;
• and
• means for multiplying said load current fundamental signal and said voltage output/input ratio to produce a current reference signal to be applied to said series inverter.

An active power line conditioner comprising:

• a series inverter coupled to an energy input source which delivers a three-phase input voltage;
• a parallel inverter coupled to a load, said parallel inverter delivering a three-phase load current, which includes fundamental components, to said load;
• an energy storage element electrically connected between said series inverter and said parallel inverter;
• first means for synchronously transforming said three phase load current signal to identify real and reactive load current fundamental components;
• first means for multiplying said reactive load current fundamental components with a predetermined displacement power factor correction ratio to generate a reactive/displacement reference signal;
• second means for synchronously transforming said three-phase input voltage into a voltage input value;
• means for dividing said voltage input value into a voltage output value to establish a voltage output/input ratio;
• and
• second means for multiplying a signal corresponding to said reactive/displacement reference signal by said voltage output/input ratio to generate series inverter reference signals to be applied to said series inverter.