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S&D Powernics developed a new Hybrid EV Charger and Grid peak demand reduction system which overcomes following limitations of current
EV Chargers :
-By direct Battery to Battery charging, demand from the power Grid is eliminated while EV batteries are being recharged at maximum power rate
-Series-compensated, DC to DC Converter provides fast and yet safe "Battery to Battery Energy Transfer".
-Input Bi-directional Converter works normally as AC to DC Converter and recharges the batteries in the charger system during off-peak hours.
However, it can be programmed to instantly change to a Grid-tie inverter by discharging the Batteries. |
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| Bi-DirectionalConverter |
• ACto DC mode : InternalBattery Charging
• DC to AC mode : Peak Load Reducer I Grid-tie Inverter |
| PV Converter |
| MPPT charging method for optimized balance of charging speed& battery safety. |
| Series-Compensated DC/DC Converter |
The proposed converter topology is easily implemented with the conventionalNS fullbridge DC/DC
converter because only battery connection is needed as shown in figure shown above. With only one
additionalconnection, the conventionalNS fullbridge DC/DC converter with rated power is transformed
into new high power conversion stage by battery. |
| Battery in EV is Recharged by "Battery-to-Battery Energy Transfer Circuit". |
| This technology provides extremely fast 8.J battery recharge time |
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| Item |
Specifications |
Remark |
| Input |
Type |
3 Phase 4 Wire |
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| Reted Voltage |
380 Vac |
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| Rated Frequency |
500Hz / 60 Hz |
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| Power Factor |
0.95 or higher |
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| Harmonic Distortion |
Lessthan5% |
Rated Current |
| Output |
Power |
50 kW maximum |
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| Voltaqe Range |
50-500Vdc |
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| Power Efficiency |
more than 90% |
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| Current |
10 -125A |
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| Isolation Test |
Voltage, Current |
500Vdc,5A |
reference : CHAdeMO |
| Time |
3sec |
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| Output Linearity |
Voltage Linearity |
less than+/- 1V |
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| Current |
less than+/- 0.5A |
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| Operating Conditions |
Efficiency |
Hiqherthan 90% |
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| Cooling |
Uses Hot Air Exhaust Fans |
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| Temperature Range |
-5°C - 40°C |
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| Humidity Range |
10%-90% (relative humidity) |
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| Interface |
Communication |
TCP/IP |
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| Dl |
Charging/ Stop |
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| Response Time |
100ms |
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| Analog Interface |
Charging/Discharging |
Utility Discharqe, Battery Charge |
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| Bypass Mode |
Internalor EV Battery Charge |
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| RUN/Stop |
EV Battery Charging/Stop |
ON/OFF |
| InternalBattery |
Type |
Lead Acid/Lithium | ON |
user selectable |
| Voltage Range |
120-330Vdc |
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| Bi-Direction Converter |
Output |
30KW [120- 330Vdc] |
CV/CC charging |
| Type |
Boost Up converter |
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| Charging Converter |
Output |
20KW [50 - 500Vdc] |
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| Type |
Phase Shift Resonant
Converter |
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| Output Open |
Output Open -System Stop |
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| Standard |
EMC |
WCI Class B, IEC61000-3, 4 |
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| STANDARD |
Approval:CHAdeMO JAPAN |
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| Mechanical |
W*D*H(mm) |
730 * 700 * 1,000 mm |
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| Weight (kg) |
285 kg |
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