Conjugate multidirectional inverter power supply
An inverter power supply and conjugate technology, applied in the field of micro-smart grid system, can solve the problems of public grid impact, unstable power generation performance, etc.
Inactive Publication Date: 2011-06-15
ZHUHAI SINGYES RENEWABLE ENERGY TECH
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Problems solved by technology
[0002] The energy crisis and environmental crisis have drawn increasing attention, and the application and promotion of renewable energy have attracted widespread attention. The grid-connected operation of renewable energy power generation is one of the development trends of the new energy industry. Solar energy, wind energy, etc. in renewable energy are closely related to the environment and climate. Close relationship, unstable power generation performance, direct grid connection is likely to cause impact on the public grid
Method used
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[0010] specific implementation plan
[0011] Such as figure 2 As shown, the power generated by the renewable energy enters the bidirectional off-grid inverter (3), passes through the isolation transformer (10) and is filtered, rectified by the three-phase full-bridge rectifier circuit (11) and then merged into the DC bus. Similarly, the power supplied by the public power grid enters the bidirectional grid-connected inverter (1), passes through the isolation transformer (2) and after filtering, is rectified by the three-phase full-bridge rectifier circuit (9) and then merged into the DC bus (2). Conversely, the electric energy on the DC bus is respectively inverted through the three-phase full-bridge inverter circuit (9) (11) and then transmitted to the public power grid and the load end through the isolation transformer (8) (10). At the same time, the charging / discharging of the battery pack (6) can be realized by controlling the DC bus voltage.
[0012] This can be done as...
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The invention discloses a conjugate multidirectional inverter power supply, which is applied to a miniature intelligent power grid system. The conjugate multidirectional inverter power supply consists of a bidirectional grid-connected inverter, a bidirectional off-grid inverter (1) and a direct current bus, wherein the bidirectional grid-connected inverter and the bidirectional off-grid inverter share the direct current bus; energy storage equipment is directly connected on the direct current bus; the bidirectional grid-connected inverter is connected with a public power grid; and a load and a regenerative energy generator are connected in parallel to the bidirectional off-grid inverter. The conjugate multidirectional inverter power supply controls multidirectional flow of the energy among the public power grid, an energy storage system, a regenerative energy generating system and the load. In the drawing, (1) represents a bidirectional grid-connected inverter, (2) represents a direct current bus, (3) represents a bidirectional off-grid inverter, (4) represents a conjugate multidirectional inverter power supply body, (5) represents a load and a regenerative energy generator, (6) represents a storage battery, and (7) represents a public power grid.
Description
Technical field [0001] The invention is applied to a micro smart grid system based on new energy power generation. Background technique [0002] The energy crisis and environmental crisis have drawn increasing attention, and the application and promotion of renewable energy have attracted widespread attention. The grid-connected operation of renewable energy power generation is one of the development trends of the new energy industry. Solar energy, wind energy, etc. in renewable energy are closely related to the environment and climate. The relationship is close, the power generation performance is unstable, and direct grid connection is likely to cause impact on the public grid. The micro-smart grid system composed of a series of distributed micro-power sources, energy storage systems, loads, and control systems is suitable for grid-connected access to renewable energy. The core technology of the micro-smart grid system is components that can control the multi-directional f...
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IPC IPC(8): H02J3/38H02J3/28
CPCH02J3/28H02J3/38H02J3/382Y02E70/30H02J2300/20H02J3/381H02J3/46
Inventor 李晟王北宁肖慧明王卫易昂谢小林
Owner ZHUHAI SINGYES RENEWABLE ENERGY TECH