Hybrid power emergency power supply

The utility model provides a hybrid power emergency power supply, which comprises a rectifier switch, a direct current switch, an emergency switch, a frequency converter, a transformer, an LC filter, a static transfer switch, a human-computer interface unit, a microcomputer control unit, a current and voltage sampling circuit and the like. All the components are reasonably arranged, so that the hybrid power emergency power supply can provide emergency power supply in an emergency state, and can be used for lighting, is conveniently applied to occasions on which only one path of mains supply is provided, and a second path of power supply is not provided, can replace a generator to form a second power supply, or can serve as a third power supply. The hybrid power emergency power supply integrates the computer, communication and automatic control technologies; the shortcomings that the conventional emergency power supply is large in size, heavy in weight, high in interference and poor in over-load performance, and cannot start the motor in a frequency-conversion way are overcome; the technical performance and complete reliability of the conventional emergency power supply are improved; and the full digital function of the emergency power supply is realized.