Method and engine controller for diagnosing waste gate valve malfunction and related power generation system

An engine controller for diagnosing a waste gate valve malfunction in a power generation system, comprising:

• a memory storing one or more processor-executable routines;
• and
• one or more processors to execute the one or more processor-executable routines which, when executed, cause acts to be performed comprising:
• determining an actual pressure differential across a throttle valve;
• determining an estimated pressure differential across the throttle valve based on one or more first operating parameters of the power generation system;
• determining an absolute difference between the actual pressure differential and the estimated pressure differential;
• and
• comparing the absolute difference between the actual pressure differential and the estimated pressure differential with a threshold value, and, if the absolute difference between the actual pressure differential and the estimated pressure differential is greater than the threshold value,
• determining an operating condition of the throttle valve;
• and
• determining whether the waste gate valve has malfunctioned based on the determined operating condition of the throttle valve without any sensors associated with the waste gate valve, wherein determining whether the waste gate valve has malfunctioned enables the engine controller to determine one or more corrective measures for the power generation system.