1. Working principle of energy storage bidirectional AC/DC converter
2. Technical Specifications of Energy Storage Bidirectional AC/DC Converter
| Model | EPCS30-AM-
M |
EPCS50-AM-
M |
EPCS63-AM-M | EPCS80-AM-
M |
EPCS105-AM-M | EPCS200-AM-H |
| Efficiency | ||||||
| Max. efficiency | >98.2% | |||||
| Input(Battery) | ||||||
| Battery type | lithium /Lead-acid | |||||
| Max. Charging power(kW) | 33 | 55 | 69.3 | 88 | 115.5 | 220 |
| Max. Discharging power(kW) | 33 | 55 | 69.3 | 88 | 115.5 | 220 |
| Voltage range(V) | 615~850 | 615~950 | 1060~1500 | |||
| Max. Current(A) | 55 | 82 | 103 | 130 | 171 | 189 |
| Battery string | 1 | |||||
| Output(On-grid) | ||||||
| AC output topology | 3W+N/3W | 3W | ||||
| Output rating(kW) | 30 | 50 | 63 | 80 | 105 | 200 |
| Max. Apparent power(kVA) | 33 | 55 | 69.3 | 88 | 115.5 | 220 |
| Rated output voltage(V) | 230/400,3W/N+PE | 690 | ||||
| Rated power frequency( Hz) | 50/60 | |||||
| Max. Current output( A) | 48 | 80 | 101 | 128 | 167 | 184 |
| PF | 1.0lagging-1.0leading | |||||
| THDI | ＜3% | |||||
| Output(Off-grid) | ||||||
| Output rating(kW) | 30 | 50 | 63 | 80 | 105 | 200 |
| Max. Apparent power(kVA) | 33 | 55 | 69.3 | 88 | 115.5 | 220 |
| Rated output voltage(V) | 230/400 | 690 | ||||
| Max. Current output | 48 | 80 | 101 | 128 | 167 | 184 |
| Frequency | 50/60 | |||||
| Protection | ||||||
| Anti-island protection | yes | |||||
| DC reverse connection protection | yes | |||||
| DC surge protection | yes | |||||
| AC surge protection | yes | |||||
| AC overcurrent protection | yes | |||||
| AC short-circuit protection | yes | |||||
| AC overvoltage protection | yes | |||||
| General data | ||||||
| Operation Temperature(℃) | -30～55 | |||||
| Relative humidity | 0%RH～95%RH | |||||
| Altitude(m) | 4000(2000 derating) | |||||
| Cooling mode | Air cooling | |||||
| Communication | CAN/RS485 | |||||
| Weight(kg) | 12 | 15 | 37 | 50 | 68 | |
| Dimensions W*D*H( mm) | 440*425*88 | 592*585*120 | 440*585*232 | 440*620*255 | 720*640*270 | |
| Protection class | IP20 | |||||
| Standard | ||||||
| Certification | EN IEC 62109-1, EN IEC 62109-2, IEC 62116 | |||||
| Technical standard | GB/T 34120-2017, GB/T 34133-2017 | |||||
3. Features
- Three-level topology, the highest conversion efficiency >98.5%
- High dynamic response, full load switching time as low as 10ms
- Support multi-machine parallel operation, expandable to 2MW
- Modular equipment makes the configuration more flexible and easy to maintain
- High-speed IGBT, low internal resistance filterAnd off-grid seamless switching, fast response, to ensure continuous and uninterrupted power supply of key loads
- Wide DC input range, supporting cascade battery utilization
- Independent adjustment of active and reactive power to improve power quality
5. Typical Application Scenarios
- Energy storage, lithium battery testing
- AC/DC analog power supply, electronic loadEnergy storage inverter
- Peak shaving and valley filling: store electricity when the electricity price is low, and discharge it during the peak period of electricity consumption, saving electricity cost
- Uninterrupted power supply: When the power grid fails, the system can provide uninterrupted off-grid power supply to ensure the normal operation of the load
- Dynamic capacity increase: Compensate for short-term power resources shortage and delay power distribution investment
- Power quality management, compensation for transient drop of grid voltage, load power factor and harmonic current
- Can form a hybrid microgrid system