Multi-Converter
Multi-Converter: Smart Energy Management
With Promwad, you can design advanced high-level control units (HLC) for multi-converters, ensuring efficient energy management in modern DC microgrids. The multi-converter enables bi-directional energy flow from solar, wind, and thermal generators, supporting up to 30 connections for residential and industrial use.
HLC with modular design ensures scalability and efficiency across a wide voltage range of 10–180 V. The high-level control unit (HLC) provides advanced connectivity through RS485 Modbus, CAN, Wi-Fi, and USB Type-C, while the device can be easily configured either locally via a browser or remotely through a mobile app.
Roman Shuliankou,
Head of Industrial Automation Unit at Promwad
Key Features
Bi-directional conversion
Current, voltage and power configuration, including linking channels into modules group
Monitoring and updating
Local data logging (USB, MicroSD), updates, backup and restore
Modular control
Multiple DC/DC converters with low-level controllers (LLC) and a central high-level controller (HLC)
Communications
Supports RS485 Modbus, CAN, WiFi on SOM, USB Type-C and M.2 radio modules (BTLE, Wi-Fi, LoRa)
User interface
Configuration via browser or app, remote monitoring and diagnostics, expert mode for advanced users
Technical Specifications
RS485, CAN, Wifi, USB Type-C
1 DI, 1DO, 2 Voltage inputs 0-10V, 1 pulse counter input
Smartphone / browser
10–180 V
Via USB
USB drive, MicroSD
Compliant with USB-PD v3.1
Multi-Converter Architecture
The system comprises interconnected components designed for efficient power management and communication:
- PCU: MCU-based power unit with DC/DC modules and LLC, inverters
- HLC: High-level controller on base of MPU SODIMM with support for communication protocols.
- Communication network: UART or RS-485 between HLC and LLC.
- Android application: Basic Wi-Fi configuration and device monitoring.
Multi-Converter Architecture Diagram
Application Scenarios
Client Testimonial
"Promwad's team of highly motivated engineers and developers with diverse expertise helped us fill knowledge gaps and broaden our perspective. The partnership with Promwad has since become an indispensable asset to our product and development department. We can wholeheartedly recommend the company and look forward to continued collaboration."
— Tobias Schwartz, Managing Partner at SolarInvert GmbH (Germany) 
Why Promwad
Energy systems expertise
We have a solid track record of creating advanced energy conversion systems, embedded solutions and scalable designs for residential and industrial markets.
Customised development
Whether you need seamless integration of a multi-converter into your existing infrastructure or completely new energy solutions, we adapt to your specific requirements.
Comprehensive support
From initial concept and hardware-software development to testing, integration, and ongoing maintenance, we provide full-cycle support to ensure project success.
Collaborative Opportunities
Looking for a reliable partner to develop custom power control and communication solutions for your embedded system?
Drop us a line about your project! We will contact you today or the next business day. All submitted information will be kept confidential.