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The problem right now is on the electric meter. By default, eQuest will put the COGEN-TRACK-MODE on "Track Electric Load".

In your case, and provided you can feed electricity to the grid (net metering, feed-in tarrif), you want COGEN-TRACK-MODE = MAX-OUTPUT (Run at maximum), which will allow your generator to produce more power than your building demand. You probably will want to get that straight for your specific needs, and also assign the proper utility rate configuration, including BUY/SELL-MODE.

Doing this will increase your ratio of inverter output(AC kWh) to inverter input (DC kWh) from 76% to 88% on generator 1 for example.

You're not seeing 93% and that's perfectly normal. There are two explanations:

  • Inverter clipping: which is when your inverter is saturated. This won't be the case for you because your Actual DC to AC ratio is basically 1. The industry tends to use 1.2, meaning there could be times where this happens.
  • Array producing a too low voltage which will derate the inverter's efficiency, or so low it will even shut-down.

In eQuest you want to look at the operating limits and conditions:

MIN-OPER-VOLT specifies the minimim input voltage below which the inverter will shut down.

MIN-TRACK-VOLT specifies the minimum input tracking voltage at which the inverter can operate efficiently. Below this value, the inverter can still operate, however its efficiency will drop linearly as a function of the actual input voltage

MAX-TRACK-VOLTS specifies the maximum input tracking voltage at which the inverter can operate efficiently. Any input voltage above this value will be limited to this value in the power conversion calculations.

The problem right now is on the electric meter. By default, eQuest will put the COGEN-TRACK-MODE on "Track Electric Load".

In your case, and provided you can feed electricity to the grid (net metering, feed-in tarrif), tariff) or to approach the effect of battery storage (to my knowledge you cannot explicitly model battery storage), you want COGEN-TRACK-MODE = MAX-OUTPUT (Run at maximum), which will allow your generator to produce more power than your building demand. You probably will want to get that straight for your specific needs, and also assign the proper utility rate configuration, including BUY/SELL-MODE.

Doing this will increase your ratio of inverter output(AC kWh) to inverter input (DC kWh) from 76% to 88% on generator 1 for example.

You're not seeing 93% and that's perfectly normal. There are two explanations:

  • Inverter clipping: which is when your inverter is saturated. This won't be the case for you because your Actual DC to AC ratio is basically 1. The industry tends to use 1.2, meaning there could be times where this happens.
  • Array producing a too low voltage which will derate the inverter's efficiency, or so low it will even shut-down.

In eQuest you want to look at the operating limits and conditions:

MIN-OPER-VOLT specifies the minimim input voltage below which the inverter will shut down.

MIN-TRACK-VOLT specifies the minimum input tracking voltage at which the inverter can operate efficiently. Below this value, the inverter can still operate, however its efficiency will drop linearly as a function of the actual input voltage

MAX-TRACK-VOLTS specifies the maximum input tracking voltage at which the inverter can operate efficiently. Any input voltage above this value will be limited to this value in the power conversion calculations.