Blower control system during power frequency/frequency conversion switching of high-voltage frequency converter
A high-voltage frequency converter and control system technology, applied in the direction of machines/engines, pump control, mechanical equipment, etc., can solve the problems of boiler flameout negative pressure, damage, and increased air supply volume, so as to achieve stable air supply volume and avoid boiler explosion or damage Effect
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[0023] Embodiment one: figure 1 As shown, a fan control system for high-voltage inverter switching between power and frequency conversion includes a control system connected to a high-voltage inverter 1 , and a damper regulator 3 located between the control system 2 and the fan damper 4 .
[0024] In this embodiment, the DCS system 2 is selected as the control system.
[0025] Wherein, the DCS system 2 is used for receiving the operation signal sent by the high-voltage frequency converter 1, and forwarding the damper opening degree control signal sent by the high-voltage frequency converter 1 to the damper regulator 3, preferably, the damper opening The degree control signal is an analog signal of 4 ~ 20mA.
[0026] The damper regulator 3 uses the damper opening control signal to control the opening of the fan damper 4 .
[0027] The running signal includes a variable-frequency running signal when the high-voltage frequency converter outputs a variable frequency and a power-...
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