Control system for multi-fuel generator set and control method thereof, and generator set

A control system for a multi-fuel generator set, the multi-fuel generator set comprising a multi-fuel engine and a generator in driving connection to the multi-fuel engine, wherein:

• the control system comprises a fuel switching switch, an engine start switch, a carburetor, a gas supply electric control valve, a signal detection module, an ignition device and a control device, a gas fuel supply pipeline of the multi-fuel engine is connected to a gas inlet of the gas supply electric control valve, a gas outlet of the gas supply electric control valve is connected to a gas fuel inlet of the carburetor, the fuel switching switch and the engine start switch are respectively connected to the signal detection module, and the carburetor, the gas supply electric control valve, the signal detection module and the ignition device are respectively connected to the control device, wherein,
• the signal detection module is configured to detect a working state signal of the multi-fuel engine and send the detected working state signal to the control device;
• and
• the control device is configured to control a switching state of the gas supply electric control valve and an ignition timing of the ignition device according to the received working state signal.