The onboard emergency power supply functions as a principle of ensuring the uninterrupted power supply in the event of an emergency. This means that the system is designed to provide power to critical onboard systems during times when the regular power supply is disrupted. As a result, the emergency power supply is an essential component of any aircraft or vessel, ensuring the safety and security of all passengers and crew members. Its functioning is critical in ensuring that the aircraft or vessel can safely navigate through any emergency situation that may arise.
In the event of normal mains power, mutual switching devices supply critical loads with power while simultaneously monitoring mains power detection and charging the battery pack. The energy stored in the battery pack can be utilized to power the inverter with DC energy.
In cases of power supply disruption or exceeding voltage limits, the mutual switching device in the on-board emergency power supply swiftly transitions to the backup inverter power supply. This ensures uninterrupted power for the user's load by converting DC energy from the battery pack into AC power through the EPS inverter. The primary component of the emergency power supply is the battery, serving the essential purpose of storing electrical energy. Additionally, it can act as a starting system for vehicles such as cars, trucks, and ships with a 12V voltage requirement, without relying on any AC power supply. Therefore, even in situations where the vehicle battery fails or freezes, this onboard power supply can successfully initiate the vehicle's functioning.