Development of a multi-purpose modular power supply for on-board space equipment
Аuthors
*, **, ***, ****Samara National Research University named after Academician S.P. Korolev, Moskovskoe shosse, 34, Samara, Russia
*e-mail: artyushin.aa@ssau.ru
**e-mail: kiryushkina.as@ssau.ru
***e-mail: grigorev.dp@ssau.ru
****e-mail: sukhachev.ki@ssau.ru
Abstract
Space technology has always represented the pinnacle of scientific and technological progress and required developers to ensure not only advanced tactical and technical characteristics of such equipment, but also the highest levels of reliability, resistance to external factors and safety.
In on-board space equipment (SPACECRAFT), both maintenance and scientific, there are specific requirements for power systems, such as:
- Galvanic isolation of all secondary power lines from the primary on-board power line;
- A large number of disconnected galvanically isolated secondary power lines;
- Differing, often significantly, voltage levels on disconnected power lines;
- Low level of interference generated in the primary power supply network and adjacent circuits;
- Low noise emission level;
- High EFFICIENCY;
- The presence of both power and low-current disconnected power lines;
- The ability to switch to autonomous power supply (from the battery), and without "drawdown" of voltage across all power lines;
- Using a radiation-resistant component base;
- Strict requirements on weight and size parameters;
Strict requirements for the thermal regime (due to the lack of natural heat, and sometimes the coolant of the gas phase of the external environment).
This article proposes the concept of a multi-purpose modular power supply for on-board space equipment that meets all the above-mentioned requirements for equipment of this class (on-board, space, scientific, special purpose, etc.).
Based on the proposed power system concept, a multi-purpose modular power supply unit for on-board space equipment was developed and tested. The block is "built" around one of the possible power bases (depending on the power), which is controlled by the universal "soft core" of the control system, the rest of the power system is formed from the modules described below based on the task:
- linear low-noise low-power stabilizers;
- Powerful pulse stabilizers;
- Especially powerful multiphase regulators;
- Self - contained power modules;
- Filtering module;
- Feedback modules (current or voltage);
- Low-speed operating system module with multiplexing.
Thus, it is proposed to use either a "designer" of packaged modules, which makes it possible to assemble any necessary power supply system on an OP battery with good characteristics, or the described universal system, implemented without the use of separate packaged modules, but with the same circuitry and having one common housing. In the first case, only the power transformer will be unique, but it can be mass-produced based on the requirements for output voltages and capacities, as well as the nomenclature of standard modules. In the second case, the system is custom-made and contains a unique set of printed circuit boards and a single housing, but it has better weight and size characteristics.
Keywords:
power supply, efficiency, on-board equipment, power supply, multiphase regulatorReferences
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