Transient forward voltage tester for recuperation duration of DC converter valve

• Main Authors: TANG GUANGFU, HE ZHIYUAN, WEN JIALIANG, ZHA KUNPENG
• Format: Patent
• Language: Chinese; English
• Published: 18.06.2008
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model discloses a transient forward voltage testing device in the recovery period of a DC converting valve. The testing device takes a six-pulse bridge with back-to-back inversion operation as a high voltage small power supply so as to provide triggering voltage and recovery step voltage which are required by the test and provide voltage jump and forward voltage rising rate during the blockade of a sample valve; meanwhile, the small current of the six-pulse bridge simulates the current change rate at the off-time of the sample valve; DC great current is provided by a sinusoidal half-wave current which is generated by a lower voltage great current source unit; one end of an impact voltage generator is connected with the connecting point between the two valve components of the sample valve and the other end thereof is grounded; transient forward voltage is acted according to IEC test standard in recovery period and after the recovery period after the current of the sample valve is turned off so as t