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High Voltage DC Inverter

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High Voltage DC Inverter
Details
Core Function: The high voltage DC inverter converts high-voltage direct current (DC) to alternating current (AC), enabling power supply for high-voltage electrical equipment.
Key Advantage: Boasts stable voltage output and high conversion efficiency, reducing energy loss during power transmission.
Typical Application: Widely used in new energy vehicles, industrial power systems, and renewable energy (solar/wind) grid-connected setups.
Safety Feature: Equipped with basic over-voltage and over-temperature protection to ensure reliable operation.
Category
High Voltage Inverter
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Description
Key Features and Technical Specs

Input (DC): The high voltage DC inverter is engineered for 200-1500V DC inputs, compatible with 600V, 1000V, and 1500V standards. Its wide MPPT range (250-1000V) optimizes solar energy harvest from long strings. Integrated DC isolators, surge protection, and special DC arc-fault fuses are equipped for safety.

Output (AC): Delivers 120V/240V single-phase or 480V three-phase power, synchronized to 50/60 Hz. Features excellent power quality (<3% THDi, unity power factor) and provides reactive power support for grid stability.

Efficiency: Achieving 98.5-99% peak efficiency (98%+ European Efficiency) due to high-voltage operation, this high voltage DC inverter employs forced air or liquid cooling in high-power units.

Control & Communication: Utilizes DSP/FPGA for control. Offers standard interfaces (RS485, Ethernet, Wi-Fi) and protocols (Modbus, SunSpec, DNP3). Grid-tied models include Fault Ride-Through capability.

 

 
Where Are They Used?
 
01/

Large Solar Farms: This is their biggest use case. By letting panels be strung together in long lines, they cut cable costs and power losses-making big solar projects financially feasible.

02/

Industrial Motor Drives: They're the heart of high-power Variable Frequency Drives (VFDs). These let you control motor speed precisely, which translates to huge energy savings.

03/

Big Battery Systems (ESS): They convert the high DC voltage from large battery banks into usable AC power for buildings or the grid.

04/

HVDC Transmission Lines: They're the massive converter stations at the end of long-distance power lines, turning DC back into AC.

05/

Microgrids: They form the core of large, independent power systems, often working alongside generators and batteries.

06/

EV Fast Chargers: While a charger's main job is AC-to-DC conversion, its power setup uses the same core IGBT/SiC tech as these inverters.

Specification

Rated capacity of the frequency converter

HC1000: 315~34640kVA※

Rated voltage

10kV,6kV(-10%~+10%)※

Rated frequency

50Hz/60Hz(-10%~+10%)※

Control power supply

380VAC,30kVA

Rated input power factor

＞0.96

Inverter efficiency

≥98.5%

Output frequency range

0~120Hz ※

Instantaneous overcurrent protection

150%

Overload capacity

120% load, 60 seconds

 

 

 

Why Choose High Voltage?
Better Efficiency
For the same amount of power, higher voltage means lower current. That drastically reduces resistive (I²R) losses, so more of the power you generate actually gets used.
Smarter Solar Harvesting
With more panels per string, small issues like partial shading don't hit performance as hard. Plus, the MPPT has a wider voltage range to work with, so it can adapt better.
 
Lower Installation Costs
You can use thinner, cheaper DC cables. Cutting down on copper and labor costs is a big win, especially for sprawling solar fields.
 
More Compact Design
Higher voltage lets you fit more power into a smaller unit, saving valuable space.

Challenges to Keep in Mind

 
  • Safety: High-voltage DC arcs are dangerous-unlike AC arcs, they don't go out on their own. That means you need special safety gear, disconnect switches, and arc-fault detection systems.
  • Design Complexity: Building these takes deep expertise in high-voltage electronics and tough insulation. It's not a simple build.
  • Higher Component Costs: Parts like high-voltage capacitors and SiC transistors cost more than standard components.
  • Evolving Standards: In some regions, safety and component standards for systems over 1000V are still being finalized. You have to stay on top of those updates.

 

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