Exploration of the Voltage Control Mode of Second-Generation EAST Fast Control Power Supply

To achieve the maximum current rising rate, the second-generation fast control power supply (FCPS) applies voltage control mode while retaining the first-generation current tracking mode. When the power supply outputs high voltage, the accompanied frequent overcurrent protection will return the power to dc side, which leads to overvoltage protection, so the current limiting protection is applied. Experimental results prove that voltage mode can greatly improve the ability to suppress vertical unstable displacement of plasma.