Semi-controlled rectifier charger Ver. 2

197

01:52:34

using relays as SCRs (using diodes for D3 and D4)

Legend:
- orange wave: battery charging voltage
- blue wave: charger input voltage
- green wave: charger output voltage
- red: charger input current

case 1: At flat voltage 
- Adjust battery voltage to 81.6V)
- Adjust relays operate voltage to 112.3 V (Firing angle at 69.38deg: Vop=120*sin(69.38deg))

Case 2: At nominal battery voltage
- Adjust battery voltage to 96V)
- Adjust relays operate voltage to 104.52 V (Firing angle at 60.58deg: Vop=120*sin(60.58deg))

Case 3: At fully charged voltage
- Adjust battery voltage to 115.2V)
- Adjust relays operate voltage to 88.34 V (Firing angle at 47.41deg: Vop=120*sin(47.41deg)

Case 4: transition from full voltage to trickle charge
- Adjust battery voltage to 115.2V)
- Adjust relays operate voltage to 119.23 V (Firing angle at 83.53deg: Vop=120*sin(83.53deg)
- charging current can be observed to go decrease to almost 0 A. 

Note: Do adjustment while pausing the simulation to see the transition of current and voltage waveforms. 

published 3 years ago

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