High dynamic control apparatus for current source converter

A method for controlling a current source converter having a current source rectifier, a current source inverter driving an AC load, and an intermediate DC circuit, the method comprising:

• using at least one processor, implementing at least one load control loop to control at least one operating parameter of a load by providing inverter switching control signals to cause the current source inverter to selectively convert DC current from the intermediate DC circuit to regulate AC output current provided to the AC load in a closed-loop fashion according to at least one load command signal or value;
• using the at least one processor, computing at least one DC current command signal or value at least partially independent of the at least one load command signal or value;
• and
• using the at least one processor, implementing a DC current control loop parallel to the at least one load control loop by providing rectifier switching control signals to cause the current source rectifier to selectively convert AC input power to regulate DC current provided to the intermediate DC circuit in a closed-loop fashion according to the at least one DC current command signal or value.

A non-transitory computer readable medium with computer executable instructions for controlling a current source converter having a current source rectifier, a current source inverter driving an AC load, and an intermediate DC circuit, the non-transitory computer readable medium comprising computer executable instructions for:

• implementing at least one load control loop to control at least one operating parameter of a load by providing inverter switching control signals to cause the current source inverter to selectively convert DC current from the intermediate DC circuit to regulate AC output current provided to the AC load in a closed-loop fashion according to at least one load command signal or value;
• computing at least one DC current command signal or value at least partially independent of the at least one load command signal or value;
• and
• implementing a DC current control loop parallel to the at least one load control loop by providing rectifier switching control signals to cause the current source rectifier to selectively convert AC input power to regulate DC current provided to the intermediate DC circuit in a closed-loop fashion according to the at least one DC current command signal or value.