Question for assistance: Can the drive be switched to operate at line frequency after a fault occurs in the inverter of the electric drive compressor?
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Question for assistance: Can a drive compressor operate at the line frequency after its inverter fails? In normal operating conditions of an electric drive compressor, can it switch to operating at the power frequency promptly in the event of a inverter failure? Has anyone encountered such a problem? What consequences might occur after switching to line frequency? Additionally, if the normal operating speed is around 10,000 r/h, how long does it take for the speed of the electric drive compressor to drop to 0 after it stops running? Please ask the experts for advice! !
Theoretically, it is possible, provided that the motor does not experience overcurrent during startup； The coasting time needs to be measured in practice
This is a centrifuge with a high rotation speed; the motor can operate at the mains frequency, but attention must be paid to the operating conditions of the process system, as it will reach its rated speed directly.
1. In the event of a fault in the inverter, a fault signal is sent to the high-voltage circuit breaker and the ITCC, triggering an interlocked shutdown. 2. If you want to start the system at line frequency, you need to have a bypass cabinet; otherwise, the system voltage will drop, causing other devices to shut down as well. 3. Are you sure the unit for 10,000 r/h is correct?
I’m just asking whether it is feasible, under normal operating conditions, to switch directly to the mains frequency in case of a failure in the inverter (since a mains-frequency bypass is already taken into account in the inverter’s design). The normal operating speed is 10,000 rpm – what effects will this have on the compressor, the motor, and the power grid? Is there any manufacturer that offers such a setting? Also, how much time is required to switch from inverter failure to line frequency?
A bypass is provided for the power units, so that even in the event of a failure in one of them, the inverter can still deliver full power output.
Switch to power frequency; the compressor can simply not be speed-regulated