For those who don't know much about gen set. A typical gen set is equipped with mechanical type governor which while doing an OK job isn't perfect. Domestic gen set use non regulated head to keep costs low. Voltage and Hz are very much dependent on precise control of rpm as current load varies on genset. Due to manufacturing variation, peak efficiency is slight offset from standards Hz.
Rules of induction state that frequency of voltage induced in secondly coil should be same as that of passing through primary coil. So I was thinking if this property could be exploited to solve lazy governor issues on gen set once for all. The idea is that a a small transformer coil with diode in series to clip part of AC cycle due to reversed polarity causing on-off pulses in circuit. These pulses can be measured to determine current frequency. Based on feedback from Hz monitor, PWM to servo motor is supplied which in turn pulls throttle cable for until desired Hz is achieved. Off course there should be some delay like 1-2 second between sensing the Hz and taking action or else there will be a genset gone wild.
Even made a rough process diagram in visio. So much for visio 07, shame on me.
Rules of induction state that frequency of voltage induced in secondly coil should be same as that of passing through primary coil. So I was thinking if this property could be exploited to solve lazy governor issues on gen set once for all. The idea is that a a small transformer coil with diode in series to clip part of AC cycle due to reversed polarity causing on-off pulses in circuit. These pulses can be measured to determine current frequency. Based on feedback from Hz monitor, PWM to servo motor is supplied which in turn pulls throttle cable for until desired Hz is achieved. Off course there should be some delay like 1-2 second between sensing the Hz and taking action or else there will be a genset gone wild.
Even made a rough process diagram in visio. So much for visio 07, shame on me.
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