Table 4.3 Recharge system test circuit parameters Table 4.4 Recharge system test circuit results However, the recharge period was 50 Us longer than desired. This was due to the larger than expected circuit inductance in the recharge capacitor and its associated wiring. The larger resistance is due to losses in the electrolytic capacitors and skin effect in the wiring. After these tests confirmed the basic operation of the recharge system, the full scale recharge capacitor bank and control circuitry were then completed. Results from testing the full scale recharge capacitor bank and control circuitry are now presented. Tests were conducted by precharging the recharge and sector capacitors and manually triggering a drive coil firing. After the drive coil has oscillated for one half cycle the recharge controller circuitry then senses the proper polarity and time to trigger the recharge SCR's. Typical waveforms for the sector capacitor voltage and recharge current are shown in Figure 4.21 for the tests performed. Voltages measured for the recharge and sector capacitors are given in Table 4.5. Tests no. 1, 3, 5 and 6 were done with drive coil firing no. 1 and tests no. 2, 4, 7 and 8 were done with drive coil firing no. 48.
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