Auxiliary onboard power supply architecture

Technical solutions for creating an auxiliary power supply system whose task is to supply electrical energy to the EMU's auxiliary systems and passengers. The system includes intelligent converters that supply the electrical networks taking into account load, train condition, and self-diagnostic results. Redundancy algorithms for the auxiliary power supply system improve train survivability and guaranteed power for life-support and train control systems.

Creation of an auxiliary power supply system whose task is to supply electrical energy to the EMU's auxiliary systems and passengers. The system includes intelligent converters that supply the electrical networks taking into account load, train condition, and self-diagnostic results.

1. The auxiliary power supply system is built on intelligent converters that generate the voltage levels required to power EMU systems.

2. The auxiliary power supply system employs algorithms that analyse data from current and voltage measurement sensors and feedback signals from devices.

3. The resulting data is used to optimise auxiliary power supply profiles for EMU systems, improve reliability, and guarantee uninterrupted power for life-support and train control systems.

1. Diagnostic data is collected by connecting to data transmission networks using networks built on various technologies and principles, including but not limited to: CAN;

Ethernet.

2. Electrical schematics are developed using graphical development environments — specialised software toolsets. These environments include the appropriate libraries, offer a high degree of automation of developer actions, and error checking. Such solutions substantially reduce development time and allow a large part of the electrical engineering design documentation package to be stored in digital form.

3. Software for optimisation and control of the auxiliary power supply system is developed using:

• programming languages: C, C++;
• development tools: Visual Studio, Eclipse, NetBeans, and specialised integrated environments for embedded microcontroller software (IAR, Keil, CubeIDE);
• source code management tools: SVN, Git;
• requirements management tools: T-FLEX RM.