Detection circuit and detection method of DRED controller and energy storage inverter
A detection circuit and detection method technology, which is applied in the direction of program control, computer control, general control system, etc., can solve the problems that the specific state of the controlled switch cannot be accurately detected, the state of the controlled switch is various, and the volume occupies a large area. Small size, optimized product volume, and easy operation
Pending Publication Date: 2021-09-24
JIANGSU EVER SOLAR NEW ENERGY CO LTD
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Problems solved by technology
[0003] The existing DRED detection circuit is usually mainly composed of 8-3 encoder, MCU, operational amplifier, detection resistor and other devices, using six or eight communication lines to detect the closed state of ten controlled switches, but the controlled There are many switch states, and it is impossible to accurately detect the specific state of each controlled switch; at the same time, the circuit is complex, the volume is large, and the cost is high
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[0047] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention.
[0048] The circuit structure of the DRED controller can be found in figure 1 As shown, the DRED circuit of the DRED controller includes ten controlled switches S0 to S9, wherein the controlled switches S1 and S5 are connected in series to form the first branch, S2 and S6 are connected in series to form the second branch, and S3 and S7 are connected in series connected to form the third branch, S4 and S8 are connected in series to form the fourth branch, resistor R0 forms the fifth branch, and the five branches are connected in parallel. Specifically, o...
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The invention discloses a detection circuit and a detection method of a DRED controller and an energy storage inverter. The detection circuit of the DRED controller comprises a controller, and further comprises a first communication line, a second communication line, a third communication line, a fourth communication line, a fifth communication line, a first detection resistor, a second detection resistor, a third detection resistor, a fourth detection resistor and a fifth detection resistor. According to the detection circuit, the on-off states of the controlled switches from S0 to S9 are judged by using five AD ports of the detection circuit, the number of used electronic components is small, the circuit structure is simple, the logic is simple and clear, the operation is easy and convenient, and the implementation is easy; the energy storage inverter adopting the detection circuit and the detection method can respond to the state of the controlled switch in time, corresponding operation can be executed according to the state of the controlled switch, the number of used electronic components is small, the cost can be reduced, the occupied space can be reduced, and the product size can be optimized.
Description
technical field [0001] The invention belongs to the field of inverters, and relates to a detection circuit and a detection method of a DRED controller and an energy storage inverter. Background technique [0002] In 2016, Australia Grid released the latest safety standard "AS NZS 4777.2-2015" for photovoltaic grid-connected inverters and photovoltaic energy storage inverters in Australia and New Zealand. It also requires all photovoltaic inverters sold to Australia and New Zealand after mid-July 2016 to comply with the latest safety standards. Added DRMs (Demand Response Modes, demand response mode) in the "AS NZS 4777.2-2015" safety standard: using an external control box --- DRED (Demand Response Enabling Device, demand response enabling device) interface Transmit instructions to control the input and output of the energy storage inverter. [0003] The existing DRED detection circuit is usually mainly composed of 8-3 encoder, MCU, operational amplifier, detection resisto...
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Login to View More IPC IPC(8): G05B19/042H02M7/48
CPCG05B19/0423H02M7/48G05B2219/21119
Inventor 朱陶金海燕卢盈吴生闻
Owner JIANGSU EVER SOLAR NEW ENERGY CO LTD