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1. 发明授权

US09800174B2 Power supply for an inverter and method for operating power supply for an inverter 有权
公开(公告)号：US09800174B2
公开(公告)日：2017-10-24
申请号：US14403867
申请日：2013-05-24
申请人： FRONIUS INTERNATIONAL GmbH
发明人： Joachim Danmayr , Stefan Bloechl , Andreas Luger , Dietmar Striegl , Martin Moertenhuber
IPC分类号： H02P27/00 , H02M7/46 , H02M7/48 , H02J9/06 , H02J3/38 , H02M1/00
CPC分类号： H02M7/46 , H02J3/38 , H02J9/062 , H02M7/48 , H02M2001/0006
摘要： Power supply for an inverter and method for operating power supply. Power supply includes a throttle arranged to connect an output end of the inverter to an electric power supply network; a secondary-side auxiliary winding that is arranged on the throttle to transmit an output voltage (UA) of the inverter to a secondary side of the throttle; and a comparator unit. The comparator unit compares a voltage (U1) of the electric supply network with the voltage (U2) of the secondary side of the throttle, to supply, depending upon a result of the comparison of the electric supply network voltage (U1) to the secondary side voltage (U2) of the throttle, electric power to the power supply either from the electric supply network or via the secondary-side auxiliary winding.

2. 发明授权

US11626792B2 Inverter with monitoring unit for intermediate circuit protection 有权
公开(公告)号：US11626792B2
公开(公告)日：2023-04-11
申请号：US17258526
申请日：2019-07-30
申请人： Fronius International GmbH
发明人： Friedrich Oberzaucher , Gerhard Wallisch , Joachim Danmayr , Andreas Luger
IPC分类号： H02M1/32 , H02M3/155 , H02M7/44 , H02M7/48 , H02M7/483 , H02M3/156
摘要： An inverter includes a DC/DC converter which converts a direct current received from a DC voltage source into an intermediate circuit voltage of an intermediate circuit, a DC/AC converter which converts the intermediate circuit voltage into an AC voltage, and a monitoring unit which monitors capacitors of the intermediate circuit for protection against overvoltages. If an overvoltage occurs at one of the capacitors of the intermediate circuit the overvoltage unit decouples the DC voltage source from the intermediate circuit by actuating the DC/DC converter.

3. 发明申请

US20210143729A1 Inverter Comprising Intermediate Circuit Protection 有权
公开(公告)号：US20210143729A1
公开(公告)日：2021-05-13
申请号：US17258526
申请日：2019-07-30
申请人： Fronius International GmbH
发明人： Friedrich Oberzaucher , Gerhard Wallisch , Joachim Danmayr , Andreas Luger
IPC分类号： H02M1/32 , H02M3/155 , H02M7/44
摘要： Inverter (1) comprising a DC/DC converter (4) which converts a direct current received from a DC voltage source (3) into an intermediate circuit voltage of an intermediate circuit (5), a DC/AC converter (6) which converts the intermediate circuit voltage into an AC voltage, and comprising a monitoring unit (8) which monitors capacitors of the intermediate circuit (5) for protection against overvoltages, the over-voltage unit (8), if an overvoltage occurs at at least one of the capacitors of the intermediate circuit (5), decoupling the DC voltage source (3) from the intermediate circuit (5) by actuating the DC/DC converter (4).

4. 发明授权

US11614475B2 Method and photovoltaic inverter for determining the insulation resistance of a photovoltaic system to ground 有权
公开(公告)号：US11614475B2
公开(公告)日：2023-03-28
申请号：US17762214
申请日：2021-03-10
申请人： Fronius International GmbH
发明人： Franz Fischereder , Andreas Muehlberger , Juergen Pirchenfellner , Andreas Luger
IPC分类号： G01R31/12 , H02S40/32 , G01R15/04 , G01R19/00 , H02J3/38 , H02S50/00
摘要： A method and a photovoltaic inverter for determining the insulation resistance of a photovoltaic system relative to ground are provided. The voltage required for the measurement can be provided by an intermediate circuit in the form of an intermediate circuit voltage and a measuring device is designed to actuate an input short-circuit switch for short-circuiting a DC input with an AC disconnector open, as a result of which the intermediate circuit voltage can be applied to the DC input in the reverse direction. The measuring device is configured to record measured voltages with a switch of a voltage divider open and closed, and to determine the insulation resistance from the measured values of the two measured voltages recorded with the switch of the voltage divider open and closed.

5. 发明授权

US10461664B1 Inverter and method for operating an inverter 有权
公开(公告)号：US10461664B1
公开(公告)日：2019-10-29
申请号：US16305963
申请日：2017-06-02
申请人： Fronius International GmbH
发明人： Andreas Luger , Gerhard Reiter , Bernhard Doppelbauer , Bernhard Staudinger
IPC分类号： H02M7/5387 , H02J3/38 , H02J9/06 , H02M7/487 , H02M1/32
摘要： The invention relates to an inverter (1) for converting a direct voltage (UDC) into an alternating voltage (UAC) for feeding into a single-phase three-conductor network (3) and for supplying loads (4), comprising a DC input (5), an intermediate circuit (6) having an intermediate circuit center point (7), a DC/AC converter (8) having at least two half bridges (12, 13), a control device (9), and an AC output (10) for connecting to the single-phase three-conductor network (3) and the loads (4′). The invention further relates to a method for operating such an inverter (1). According to the invention, the control device (9) is designed to connect, in an emergency power operation (BOM), one half bridge (12) of the DC/AC converter (8) to a phase conductor (L1) of the AC output (10), to connect the other half bridge (13) of the DC/AC converter (8) to another phase conductor (L2) of the AC output (10), and to connect the intermediate circuit center point (7) to the neutral conductor (N) of the AC output (10) and to halve the amplitude of the output signal (U1BOM, U2BOM) of the half bridges (12, 13), and to perform a phase shift of the output signal (U1BOM or U2BOM) of one half bridge (12 or 13) by 180° such that at least some loads (4) can also be supplied in emergency power operation (BOM).

6. 发明申请

US20150146463A1 POWER SUPPLY FOR AN INVERTER 有权
标题翻译：电源用于逆变器
公开(公告)号：US20150146463A1
公开(公告)日：2015-05-28
申请号：US14403867
申请日：2013-05-24
申请人： FRONIUS INTERNATIONAL GMBH
发明人： Joachim Danmayr , Stefan Bloechl , Andreas Luger , Dietmar Striegl , Martin Moertenhuber
IPC分类号： H02M7/46 , H02J3/38
CPC分类号： H02M7/46 , H02J3/38 , H02J9/062 , H02M7/48 , H02M2001/0006
摘要： To be able to maintain the power supply of an inverter which is supplied with power from a supply network even in the event of a power failure, it is proposed according to the invention that in the event of a power failure, the electric power for the power supply (2) of the inverter (1) is obtained from a throttle (7) of the inverter (1) at the output end via an auxiliary winding (13).
摘要翻译：为了能够维持即使在发生电源故障的情况下也从供电网络供电的逆变器的电源，根据本发明提出，在电源故障的情况下，为了逆变器（1）的电源（2）通过辅助绕组（13）从输出端的逆变器（1）的节气门（7）获得。

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