An optimization method is proposed for computing the maximum penetration level of multiple distributed generators,taking into account voltage regulation constraints.

The voltage regulation characteristic of autotransformer,external compensation of zero sequence current for three Y au .

Test results show that the designed power supply has good voltage regulation performance,with small ripple and high regulation rate of voltage and load.

The principle of voltage adjustment and power factor improvement in capacitor were analyzed,and the choossing approach was introduced.

Then, all voltage adjustment methods including Nanyang transformer in plan are analyzed to solve low voltage of Nanyang station which caused by huge power transmission.

Dynamic performance and simulation tests of voltage regulators;

Power system is an essential component of the Automotive electronic,voltage regulator of is the key component and the higher levels of technology in power supply system.

Design of permanent magnet alternator with low voltage regulation;

Simulation results show that the quiescent current of voltage reference circuit is about 35μA;the voltage reference temperature coefficient is±15×10~(-6)/℃;the power supply rip- ple reject at low frequency is 63 dB and the voltage regulation is 0.

In engineering practice of switching power supply development, in order to improve the control precision of UC3842 based switching power supply and reduce it’s voltage regulation and regulation burden, we studied the peripheral circuit of UC3842’s voltage feedback pin and found an efficient and economic way to improve its control precision.