Adopt zero voltage switch auxiliary resonant's photovoltaic power generation device
The utility model discloses an adopt zero voltage switch auxiliary resonant's photovoltaic power generation device, including photovoltaic array, boost boost circuit, auxiliary resonant circuit, PWM contravariant bridge, three phase resistance inductive loads, through add the auxiliary resonant...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The utility model discloses an adopt zero voltage switch auxiliary resonant's photovoltaic power generation device, including photovoltaic array, boost boost circuit, auxiliary resonant circuit, PWM contravariant bridge, three phase resistance inductive loads, through add the auxiliary resonant unit between boost boost circuit and PWM contravariant bridge, make direct current side energy -storage capacitor voltage periodically return to zero, realize PWM contravariant bridge switching element and accomplish the switching under the no -voltage condition that the switching element in the auxiliary resonant circuit can be realized also that the no -voltage is opened and turn -offs with the zero current moreover. The utility model discloses can reduce switching loss, improve switching frequency, the line voltage and the phase electric current of output are controlled well, and current waveform is glossy sine wave, has improved photovoltaic power generation's efficiency. |
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