Series resonance type single-phase power grid synchronous phase waveform generator

• Main Authors: PAN HUIYOU, WEI YONG, ZHU HONGHAO, DENG YOUZHI, XIAO SHENGQUAN, HAN FEI, WU SICHANG, FENG HONGYING, ZHU JUNHONG
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; ELECTRICITY; PULSE TECHNIQUE

The invention discloses a series resonance type single-phase power grid synchronous phase waveform generator which comprises a power grid voltage, a resistor and an alternating current comparison circuit which are connected with the power grid voltage, the alternating current comparison circuit is connected with a series resonance bin, and the series resonance bin is connected with an inductor L and a capacitor C; the inductor L and the capacitor C are connected with an orthogonal signal generating circuit, the orthogonal signal generating circuit is connected with a single chip microcomputer AD, the phase of the power grid is locked in a hardware mode, a cosine function which is in the same phase with the power grid and a sine function which differs from the phase of the power grid by 90 degrees are directly output, and the output waveform has the characteristic of fixed amplitude. Sampling can be directly carried out through an AD sampling pin of the single-chip microcomputer, the number of calculation unit