Both the COLUMBUS attached module and the free flying laboratory require extensive power distribution capabilities. Due to the requirement to accommodate various payloads in many differing locations, the capacity of the distribution system greatly exceeds the power and energy capabilities of the power source. Because of this architecture, power distribution and switching protection are key features of the overall power system design. With this in mind, contracts were let in 1987 to develop solid state power controllers for the COLUMBUS programme. These initial contracts have resulted in the breadboard development of both pulsewidth modulation and linear current limiting controllers. These contracts are now nearing completion, and follow on contracts will carry these designs through almost to an engineering model standard using thick film hybrid technology. Power systems for manned applications present a great challenge to the European space industry, due to the safety and reliability requirements. It is clear that power systems for manned applications must possess substantial redundancy and be reconfigurable in addition to the requirement that service be possible without a major power utility interruption. Substantial work will be required in the near future as a result of these fundamental requirements in order to provide confidence in the integrity of this system. Substantial work has been done in recent years to achieve electrical supply standardization at the interfaces between COLUMBUS, HERMES and the United States space station FREEDOM. This approach will reduce costs as well as
RkJQdWJsaXNoZXIy MTU5NjU0Mg==