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China 100KT 110KT 125KT Power Conversion System Inverter AC/DC Dual Backup Suppliers - Factory Direct Auxiliary Power Supply
Power Conversion Inverter (PCS)
The core equipment in an energy storage system, 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 seamless control and dispatch of electrical energy.
Core Conversion Functions
1
AC/DC Conversion (Rectification)
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 safely in the battery bank.
2
DC/AC Conversion (Inversion)
Discharging (DC → AC): When grid demand peaks or backup power is required, the PCS converts the DC power stored in the batteries back into standard AC power to supply the grid or local loads.
3
Grid-Tied & Off-Grid Flexibility
Enables the energy storage system to dynamically switch between grid-tied mode (synchronized with the main grid) and off-grid mode (operating independently as a microgrid) as required.
Smart Management & Control Features
- EMS Smart Energy Management: Intelligent system monitoring and dispatch.
- Multiple Modes: Configurable off-grid, grid-tied, and grid charging modes.
- LCD Smart Touchscreen: Intuitive local display and control interface.
- AC/DC Dual Backup: Redundant auxiliary power supply for high reliability.
- Unbalanced Load Control: Advanced technology to handle phase imbalances.
- Standard RS485 Modbus: Built-in RTU protocol for industrial integration.
- Remote Monitoring (Optional): WIFI/LAN remote monitoring and control app.
- Static Transfer Switch (Optional): STS support for rapid grid/off-grid switching.
Technical Parameters
| 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 Parameters (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 & battery integrated, system protection level IP54 or above) | IP20 (module & battery integrated, system protection level IP54 or above) | IP20 (module & battery integrated, system protection level IP54 or above) |
Frequently Asked Questions
What is the primary role of a Power Conversion System (PCS) in energy storage?
The PCS acts as the "brain" of the energy storage system. It handles bidirectional power conversion, converting AC power to DC for charging batteries, and converting DC power back to AC for discharging into the grid or local electrical loads.
Does the Mars series PCS support both grid-tied and off-grid operations?
Yes, the system features grid-tied and off-grid operational flexibility. It can operate in grid-tied mode, off-grid mode, or grid charging mode, with optional Static Transfer Switch (STS) support for seamless transitions.
What is the maximum conversion efficiency of the Mars series PCS?
The Mars series (including Mars-125KT, Mars-110KT, and Mars-100KT) delivers a high maximum conversion efficiency of up to 98.9%.
What safety protections are integrated into the Mars PCS?
The system is equipped with comprehensive protection mechanisms, including DC reverse polarity protection, AC short-circuit protection, AC output overcurrent protection, Level 2 surge protection, insulation resistance monitoring, and temperature protection.
What communication and remote monitoring options are available?
It comes standard with an RS485 Modbus RTU protocol for industrial control systems. Additionally, optional remote monitoring and control apps via WIFI or LAN interfaces are supported.
How does the system handle unbalanced phase loads?
The Mars PCS features advanced Control Technology for Unbalanced Loads, allowing it to maintain stable power output and system integrity even when connected to highly unbalanced phase distributions.
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