1. A liquid ejecting apparatus comprising:
a moving body provided with a liquid ejecting head which ejects liquid from nozzles;
a guide frame which guides the moving body in a moving direction;
an upper facing member arranged to face an upper surface of the guide frame;
a bottom facing member arranged to face a bottom surface of the guide frame;
an urging member which urges the guide frame toward a side opposite to a gravity direction; and
wherein the upper facing member contacts with a part of the upper surface of the guide frame to regulate a displacement of the guide frame in an antigravity direction due to the urging member, and
wherein the guide frame can be displaced toward the gravity direction side with a gap between the bottom facing member and at least a portion of the bottom surface of the guide frame.
2. The liquid ejecting apparatus according to claim 1,
wherein the guide frame is displaceably supported with respect to the bottom facing member,
wherein a fulcrum is formed between the guide frame and the bottom facing member at least when the guide frame is being displaced.
3. The liquid ejecting apparatus according to claim 2,
wherein a second upper facing member that is arranged to face a portion of the upper surface of the guide frame and that supports the guide frame in a direction which crosses the moving direction of the moving body is provided in the bottom facing member.
4. The liquid ejecting apparatus according to claim 3,
wherein a gap in a vertical direction is provided between the second upper facing member and the guide frame.
5. The liquid ejecting apparatus according to claim 2, further comprising:
a pair of transporting rollers which relatively move a medium with respect to the liquid ejecting head by interposing the medium to which the liquid is ejected therebetween,
wherein the urging member generates a pinching force of the medium in the pair of transporting rollers.
6. The liquid ejecting apparatus according to claim 1,
wherein the guide frame is supported so as to be moved in a sliding manner toward the gravity direction side with respect to the bottom facing member, in the upper facing member.
7. The liquid ejecting apparatus according to claim 1,
wherein, at least one of a plurality of the upper facing members which are provided in the moving direction of the moving body allows that the guide frame can relatively move with respect to the bottom facing member along the moving direction of the moving body.
8. A liquid ejecting apparatus comprising:
a supported frame to support a liquid ejecting head which ejects liquid from nozzles;
an upper facing member positioned to face an upper surface of the supported frame;
a bottom facing member positioned to face a bottom surface of the supported frame;
an urging member which urges the supported frame toward a side opposite to a gravity direction; and
wherein the upper facing member contacts with a part of the upper surface of the supported frame to regulate a displacement of the supported frame in an antigravity direction due to the urging member, and
wherein the guide frame can be displaced towards the gravity direction side with a gap between the bottom facing member and at least a portion of the bottom surface of the supported frame.
9. The liquid ejecting apparatus of claim 8, wherein the liquid ejecting head comprises a line head that is fixed.
10. The liquid ejecting apparatus of claim 8, wherein the liquid ejecting head is movably disposed on the supported frame.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A method of operating an inverter comprising a plurality of input connectors, wherein a plurality of strings of photovoltaic cells are configured to connect respectively to the plurality of input connectors, wherein each of the plurality of input connectors is connected to a common DC voltage link via a respective DCDC converter, and wherein the input connectors are bridgeable, the method comprising:
determining partial powers flowing through the individual DCDC converters; and
at least for some time either operating at least two of the DCDC converters with the aim of balancing partial currents flowing through these at least two DCDC converters, or connecting through the at least two of the DCDC converters between the respective input connectors and the DC voltage link,
wherein, while operating the at least two DCDC converters with the aim of balancing the partial currents flowing through them or connecting through the at least two DCDC converters, the partial powers flowing through the at least two DCDC converters are compared to each other, and
wherein, if a difference between the partial powers of a first and a second of the at least two DCDC converters exceeds a threshold value, the first and the second of the at least two DCDC converters are subsequently operated in a way that is adjusted due to a conclusion that different strings are connected to the DC voltage link via the first and the second of the at least two DCDC converters.
2. The method of claim 1, further comprising measuring input voltages present at the individual input connectors and measuring input currents of the individual DCDC converters to determine the partial powers flowing through the individual DCDC converters.
3. The method of claim 1, further comprising measuring output currents of the individual DCDC converters to determine the partial powers flowing through the individual DCDC converters.
4. The method of claim 1, wherein, when the at least two DCDC converters are operated with the aim of balancing their partial currents flowing through them, the input voltages of the individual DCDC converters are measured and compared for comparing the partial powers flowing through the at least two DCDC converters.
5. The method of claim 1, wherein, when the at least two DCDC converters are operated with the aim of balancing the partial currents flowing through them, the actual partial currents flowing through the individual DCDC converters are compared for an initial comparison of the partial powers flowing through the at least two DCDC converters.
6. The method of claim 1, wherein, when operating the first and the second DCDC converter adjusted due to the conclusion that different strings are connected to the DC voltage link via the first and the second of the at least two DCDC converters, the first and the second of the at least two DCDC converters are no longer operated with the aim of balancing the partial currents flowing through them.
7. The method of claim 1, wherein, when operating the first and the second DCDC converter adjusted due to the conclusion that different strings are connected to the DC voltage link via the first and the second of the at least two DCDC converters, the first and the second of the at least two DCDC converters are operated to track separate maximum power points (MPPs) of the connected strings.
8. The method of claim 1, wherein initially either all DCDC converters are operated with the aim of balancing the partial currents flowing through them or all DCDC converters are connected through.
9. The method of claim 1, wherein, prior to either operating the at least two DCDC converters with the aim of balancing the partial currents flowing through them or connecting through the at least two DCDC converters, measuring the input voltages present at at least some of the input connectors in an unloaded state of the connected strings, wherein subsequently all DCDC converters in which the measured input voltages at the associated input connectors are substantially equal are either operated with the aim of balancing the partial currents flowing through them, or connected through between the input connectors and the DC voltage link.
10. The method of claim 1, wherein, prior to either operating the at least two DCDC converters with the aim of balancing the partial currents flowing through them or connecting through the at least two DCDC converters, individually operating at least one DCDC converter in order to selectively load all strings which are connected thereto to the DC voltage link, wherein the input voltages present at all input connectors are monitored, and wherein subsequently all DCDC converters in which the input voltages at the associated input connectors dropped as a consequence of the load are either operated with the aim of balancing the partial currents flowing through them or connected through between the input connectors and the DC voltage link.
11. The method of claim 1, further comprising shutting off a sufficient number of DCDC converters of a plurality of DCDC converters via which the very same strings are connected to the DC voltage link so that the remaining DCDC converters of this plurality of DCDC converters forward the current from these strings at a maximum efficiency to the DC voltage link.
12. The method of claim 1, further comprising storing information about via which DCDC converters different strings are connected to the DC voltage link.
13. The method of claim 12, further comprising using the information about via which DCDC converters different strings are connected to the DC voltage link for operating the DCDC converters of the inverter.
14. The method of claim 13, further comprising comparing the information about via which DCDC converters different strings are connected to the DC voltage link to previously determined information, and wherein in case that the information determined at last differs from the previously determined information an alarm signal is generated.
15. An inverter, comprising:
a plurality of input connectors configured to couple to a plurality of strings of photovoltaic cells, wherein the plurality of input connectors are bridgeable;
a plurality of DCDC converters coupled between the plurality of input connectors respectively and a common DC voltage link; and
a controller operably coupled to each of the plurality of DCDC converters, wherein the controller is configured to:
determine partial powers flowing through the individual DCDC converters; and
at least for some time either operate at least two of the DCDC converters with the aim of balancing partial currents flowing through these at least two DCDC converters, or connect through the at least two of the DCDC converters between the respective input connectors and the DC voltage link,
wherein, while operating the at least two DCDC converters with the aim of balancing the partial currents flowing through them or connecting through the at least two DCDC converters, the partial powers flowing through the at least two DCDC converters are compared to each other, and
wherein, if a difference between the partial powers of a first and a second of the at least two DCDC converters exceeds a threshold value, the first and the second of the at least two DCDC converters are subsequently operated in a way that is adjusted due to a conclusion that different strings are connected to the DC voltage link via the first and the second of the at least two DCDC converters.