39 lines
1.3 KiB
Go
39 lines
1.3 KiB
Go
package core
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import (
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"github.com/avast/retry-go/v3"
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"github.com/evcc-io/evcc/util"
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)
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var (
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status = map[bool]string{false: "disable", true: "enable"}
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presence = map[bool]string{false: "✗", true: "✓"}
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// retryOptions ist the default options set for retryable operations
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retryOptions = []retry.Option{retry.Attempts(3), retry.LastErrorOnly(true)}
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// Voltage global value
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Voltage float64
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)
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// powerToCurrent is a helper function to convert power to per-phase current
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func powerToCurrent(power float64, phases int) float64 {
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if Voltage == 0 {
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panic("Voltage is not set")
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}
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return power / (float64(phases) * Voltage)
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}
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// sitePower returns the available delta power that the charger might additionally consume
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// negative value: available power (grid export), positive value: grid import
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func sitePower(log *util.Logger, maxGrid, grid, battery, residual float64) float64 {
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// For hybrid inverters, battery can be charged from DC power in excess of
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// inverter AC rating. This battery charge must not be counted as available for AC consumption.
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// https://github.com/evcc-io/evcc/issues/2734, https://github.com/evcc-io/evcc/issues/2986
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if maxGrid > 0 && grid > maxGrid && battery < 0 {
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log.TRACE.Printf("ignoring excess DC charging due to grid consumption: %.0fW > %.0fW", grid, maxGrid)
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battery = 0
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}
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return grid + battery + residual
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}
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