Synchronous regulation circuit for turn-on and turn-off phase angle of the ac voltage

A synchronous regulation circuit for turn-on and turn-off phase angle of the AC voltage, wherein a solid switch unit is installed between an AC power source and a load, and a phase angle regulation circuit is utilized to synchronously regulate both of the turn-on phase angle and turn-off phase angle of the solid switch unit, so that the sine waveform voltage of the AC power source can be kept to output in symmetrical waveforms within the range in which the turn-on and turn-off phase angles being synchronously regulated;

• the synchronous regulation circuit for turn-on and turn-off phase angle of the AC voltage, provided by the present invention, can be applied to regulate the voltage output by a single-phase AC power source or a multiphase AC power source, for supplying power with stable voltage to a load or for regulating the output current to the load, which mainly consists of:
• AC current limiting circuit device (Z10):
• which is constituted by one or more than one of resistive impedance, inductive impedance and capacitive impedance being connected in series, in parallel or in series and parallel and provided for being connected in series with the load (L101) and the bipolar solid switch unit (1000) then connected in parallel with the AC power source;
• Bipolar solid switch unit (1000):
• which is constituted by one or more than one of following solid switch units:
• 1) The bipolar solid switch unit (1000) is composed of a bidirectional thyristor component capable of controlling the turn-on phase angle, e.g. bidirectional silicon controlled rectifier TRIAC (Triode AC semiconductor switch);
• through the regulation function of the regulation circuit of bipolar turn-on and turn-off phase angle (PD100) itself, a bipolar driving voltage signal is output to regulate the turn-on phase angle and the turn-off phase angle of the bipolar solid switch unit (1000) composed of the TRIAC;
• 2) The bipolar solid switch unit (1000) is composed of at least two field effect power components, e.g. a bipolar module composed of the metal oxide semiconductor field effect transistor (MOSFET) or the insulated gate bipolar transistor (IGBT);
• and through the regulation function of the regulation circuit of bipolar turn-on and turn-off phase angle (PD100) itself, a bipolar driving voltage signal is output to regulate the turn-on phase angle and the turn-off phase angle of the bipolar solid switch unit (1000) composed of at least two field effect power components;
• Regulation circuit of bipolar turn-on and turn-off phase angle (PD100):
• which is constituted by electronic circuit components for inputting the AC power voltage;
• and through the regulation function of the circuit itself, and with respect to the current value passing the AC current limiting circuit device (Z10) and the terminal voltage value of the load (L101), a bipolar driving voltage signal is output to regulate the turn-on phase angle and the turn-off phase angle of the bipolar solid switch unit (1000);
• The mentioned circuit is for regulating the resistance, the inductive load containing the resistance or the capacitive load containing the resistance driven by the AC power, or the load in which the inductive load and the capacitive load containing the resistance connected in series.