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China Suppliers Factory Power Conversion System Inverter AC/DC Dual Backup for Auxiliary Power Supply 100KT 110KT 125KT
🔋 Power Conversion Inverter (PCS)
The core equipment in an energy storage system and is often referred to as the "brain" of the system. Its main function is to convert power between alternating current (AC) and direct current (DC), enabling the control and dispatch of electrical energy.
✔ Functions include:
AC/DC Conversion (Rectification/Inversion):
Charging (AC → DC): When there is excess power from the grid (or AC power generated by a PV inverter), the PCS converts it into DC electricity to store in the batteries. This process is called rectification.
Discharging (DC → AC): When electricity is needed, the PCS converts the DC power from the batteries into AC power and supplies it to the grid or to the load (electrical equipment). This process is called inversion.
🔎 Grid-Tied and Off-Grid Operation:
The PCS enables the energy storage system to switch between grid-tied mode (connected to the grid) and off-grid mode (operating independently, e.g., in a microgrid) as needed.
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EMS smart energy management system
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Multiple configurable operating modes: off-grid, grid-tied, and grid charging
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LCD smart touch Screen Display
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AC/DC dual backup for auxiliary power supply
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Control Technology for Unbalanced Loads
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Standard RS 485 modbus RTU protocol
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WIFI/ LAN Remote monitoring and control app available (optional)
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Support add Static Transfer Switch (STS) for Grid-Tie/Off-Grid Applications (optional)
| Model | Mars-125KT | Mars-110KT | Mars-100KT |
|---|---|---|---|
| DC side parameters | |||
| Maximum DC voltage | 1,000V | 1,000 V | 1,000v |
| Minimum DC voltage[1] | 580V | 580V | 580V |
| DC voltage operating range | 350-1000 V | 350-1000V | 350-1000v |
| Maximum DC current | 216A | 190A | 173A |
| AC side parameters (grid-connected) | |||
| Rated charging/discharging power | 125kW | 110kW | 100kw |
| Maximum charge and discharge power | 150kW | 132kW | 120kw |
| Rated charge and discharge current | 182A | 160A | 145A |
| Maximum charge-discharge current | 217A | 192A | 174A |
| Rated grid voltage | 400V | 400V | 400V |
| Permissible grid voltage range | 300-460 V | 300-460 V | 300-460v |
| Rated grid frequency | 50Hz/60Hz | 50Hz/60Hz | 50Hz/60Hz |
| Current total harmonic distortion rate | <3% (at rated power) | <3% (at rated power) | <3% (at rated power) |
| Power factor | > 0.99 | > 0.99 | > 0.99 |
| Power factor range | -1~1 | -1~1 | -1~1 |
| Overload capacity | 1.2 Pn, continuous for 1 minute | 1.2 Pn, continuous for 1 minute | 1.2 Pn, continuous for 1 minute |
| AC side parameter (off-grid) | |||
| Rated input voltage | 400V | 400V | 400V |
| Voltage deviation | ±2% | ±2% | ±2% |
| Total harmonic distortion rate | <3% (linear load) | <3% (linear load) | <3% (linear load) |
| Efficiency | |||
| Maximum efficiency | 98.9% | 98.9% | 98.9% |
| Protection | |||
| DC reverse polarity protection | Supported | Supported | Supported |
| AC short-circuit protection | Supported | Supported | Supported |
| AC output overcurrent protection | Supported | Supported | Supported |
| Surge protection | Level 2 | Level 2 | Level 2 |
| Insulation resistance monitoring | Supported | Supported | Supported |
| Temperature protection | Supported | Supported | Supported |
| Basic parameters | |||
| Topology | Without transformer | Without transformer | Without transformer |
| Ambient temperature | -40℃~+60℃ | -40℃~+60℃ | -40℃~+60℃ |
| Protection level | IP20 (module and battery pack integrated solution, system protection level is IP54 or above) | IP20 (module and battery pack integrated solution, system protection level is IP54 or above) | IP20 (module and battery pack integrated solution, system protection level is IP54 or above) |
Frequently Asked Questions (FAQ)
What is a Power Conversion System (PCS) Inverter?
A Power Conversion System (PCS) is the core equipment in an energy storage system, acting as the "brain". It converts power between alternating current (AC) and direct current (DC) to control and dispatch electrical energy.
How does the AC/DC conversion process work in this system?
During charging (rectification), the PCS converts excess AC power from the grid or PV inverter into DC electricity to store in batteries. During discharging (inversion), it converts the stored DC power back to AC power to supply the grid or local loads.
Does the Mars series support both grid-tied and off-grid modes?
Yes, the Mars series PCS enables the energy storage system to easily switch between grid-tied mode (connected to the grid) and off-grid mode (operating independently, e.g., in a microgrid) as required.
What monitoring and remote control interfaces are supported?
The system features an LCD smart touch screen display and supports the standard RS 485 Modbus RTU protocol. Optional WIFI/LAN remote monitoring and control apps are also available.
What safety and protection features are integrated?
The Mars PCS includes comprehensive protection features such as DC reverse polarity protection, AC short-circuit protection, AC output overcurrent protection, Level 2 surge protection, insulation resistance monitoring, and temperature protection.
Can the Mars PCS handle unbalanced loads?
Yes, the system is designed with control technology specifically optimized for unbalanced loads, ensuring stable and reliable operation under varying load conditions.
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