AC-DC PHOTOVOLTAIC DEVICE
First Claim
1. An alternating-current direct-current (AC-DC) photovoltaic device, comprising:
- a photovoltaic module,a direct current side capacitor,a direct current pulse width modulation (DC-PWM) power switching circuit, anda controller, whereinthe direct current side capacitor is connected in parallel with an output terminal of the photovoltaic module;
an input terminal of the DC-PWM power switching circuit is connected with the output terminal of the photovoltaic module;
the DC-PWM power switching circuit comprises a controllable switch transistor;
the controller is configured to output a switch control signal to control a switching state of the controllable switch transistor in the DC-PWM power switching circuit, to control the DC-PWM power switching circuit to output a direct current PWM wave in a case that the switch control signal is a direct current modulation signal and output an alternating current PWM wave in a case that the switch control signal is an alternating current modulation signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An AC-DC photovoltaic device is provided, including: a photovoltaic module, a direct current side capacitor, a DC-PWM power switching circuit and a controller. The direct current side capacitor is connected in parallel with an output terminal of the photovoltaic module. An input terminal of the DC-PWM power switching circuit is connected with the output terminal of the photovoltaic module. The DC-PWM power switching circuit includes a controllable switch transistor. The controller is configured to output a switch control signal to control a switching state of the controllable switch transistor in the DC-PWM power switching circuit, to control the DC-PWM power switching circuit to output a direct current PWM wave in a case that the switch control signal is a direct current modulation signal, and output an alternating current PWM wave in a case that the switch control signal is an alternating current modulation signal.
-
Citations
16 Claims
-
1. An alternating-current direct-current (AC-DC) photovoltaic device, comprising:
-
a photovoltaic module, a direct current side capacitor, a direct current pulse width modulation (DC-PWM) power switching circuit, and a controller, wherein the direct current side capacitor is connected in parallel with an output terminal of the photovoltaic module; an input terminal of the DC-PWM power switching circuit is connected with the output terminal of the photovoltaic module; the DC-PWM power switching circuit comprises a controllable switch transistor; the controller is configured to output a switch control signal to control a switching state of the controllable switch transistor in the DC-PWM power switching circuit, to control the DC-PWM power switching circuit to output a direct current PWM wave in a case that the switch control signal is a direct current modulation signal and output an alternating current PWM wave in a case that the switch control signal is an alternating current modulation signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
Specification