Reliable Power Supply for Solid-State Transformers
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Summary
Problems
The challenge in providing reliable power supply to the control module within a solid-state transformer, which is crucial for its operation and stability, while minimizing size and costs by eliminating the need for additional isolation devices.
Innovation solutions
A power unit comprising a first subsidiary power supply circuit and a first power circuit, where the first power circuit includes an AC/AC power main circuit and a first control module, and a second power circuit with an AC/DC power main circuit, allowing for voltage adjustment and reliable power delivery to the control modules, with no separate isolation device required.
TRIZ Analysis
Specific contradictions:
General conflict description:
Principle concept:
If conventional liquid-immersed transformers are used, then cooling and insulation are achieved, but fire hazards and environmental pollution occur
Why choose this principle:
The patent replaces flammable liquid insulation with solid insulation materials that create an inert environment, eliminating fire hazards and pollution while maintaining transformer reliability through controlled thermal management
Principle concept:
If solid insulation materials are used instead of liquid, then fire safety is improved, but heat dissipation capability deteriorates
Why choose this principle:
The patent introduces heat dissipation fins and ventilation structures as intermediary elements between the solid insulation and the environment, enabling effective heat transfer without requiring flammable liquid media
Application Domain
Data Source
AI summary:
A power unit comprising a first subsidiary power supply circuit and a first power circuit, where the first power circuit includes an AC/AC power main circuit and a first control module, and a second power circuit with an AC/DC power main circuit, allowing for voltage adjustment and reliable power delivery to the control modules, with no separate isolation device required.
Abstract
This application provides a power unit and a solid-state transformer, to supply power to a control module in the power unit by using a first subsidiary power supply circuit and a second subsidiary power supply circuit and improve operation reliability of the power unit. The power unit may include the first subsidiary power supply circuit and a first power circuit. The first power circuit includes an alternating current/alternating current power main circuit and a first control module. The alternating current/alternating current power main circuit is coupled to a grid power supply system to supply power to the alternating current/alternating current power main circuit through the grid power supply system. An input end of the first subsidiary power supply circuit is coupled to a bus of the alternating current/alternating current power main circuit. An output end of the first subsidiary power supply circuit is coupled to the first control module. The first subsidiary power supply circuit adjusts a voltage of the bus of the alternating current/alternating current power main circuit to a direct current voltage required by the first control module and outputs the direct current voltage to the first control module.