1. A 3D data analysis apparatus comprising:
a data storage unit that saves measurement data regarding fine particles;
an input unit that selects independent three types of variables from the measurement data;
a data processing unit that calculates positions and figures in a coordinate space whose coordinate axes are the three types of variables and that creates a 3D stereoscopic image representing characteristic distribution of the fine particles; and
a display unit that displays the 3D stereoscopic image,
wherein, in the 3D stereoscopic image, the figures in each region of the coordinate space divided into a plurality of regions by a plane are displayed in a different color in each region.
2. The 3D data analysis apparatus according to claim 1, wherein the data processing unit calculates a distribution frequency in each region, and
wherein the display unit displays the figures in each region in a color associated with the distribution frequency.
3. The 3D data analysis apparatus according to claim 2,
wherein the plane is set on the basis of a signal input from the input unit in such a way as to enable a change in a position and displayed in the 3D stereoscopic image.
4. The 3D data analysis apparatus according to claim 3,
wherein the data processing unit calculates the distribution frequency in synchronization with the change in the position of the plane, and
wherein the color of the figures in each region is displayed in such a way as to change in real time.
5. The 3D data analysis apparatus according to claim 4,
wherein the 3D stereoscopic image is rotated on the display unit on the basis of a signal input from the input unit and a stereoscopic image of the image can be observed from an arbitrarily selected coordinate axis direction.
6. A fine particle analysis system comprising:
a 3D data analysis apparatus that includes a data storage unit which saves measurement data regarding fine particles, an input unit which selects independent three types of variables from the measurement data, a data processing unit which calculates positions and figures in a coordinate space whose coordinate axes are the three types of variables and which creates a 3D stereoscopic image representing characteristic distribution of the fine particles, and a display unit which displays the 3D stereoscopic image and that displays, in the 3D stereoscopic image, the figures in each region of the coordinate space divided into a plurality of regions by a plane in a different color in each region; and
a fine particle measuring apparatus.
7. A 3D data analysis method comprising:
a procedure for selecting independent three types of variables from measurement data regarding fine particles;
a procedure for calculating positions and figures in a coordinate space whose coordinate axes are the three types of variables and creating a 3D stereoscopic image representing characteristic distribution of the fine particles;
a procedure for displaying the 3D stereoscopic image;
a procedure for setting a plane that divides the coordinate space into a plurality of regions in the 3D stereoscopic image; and
a procedure for displaying the figures in each region in a different color in each region.
8. A 3D data analysis program that causes a computer to execute:
a step of calculating positions and figures in a coordinate space whose coordinate axes are independent three types of variables selected from measurement data regarding fine particles and creating a 3D stereoscopic image representing characteristic distribution of the fine particles;
a step of displaying the 3D stereoscopic image; and
a step of displaying, in the 3D stereoscopic image, the figures in each region of the coordinate space divided into a plurality of regions by a plane set by a user in a different color in each region.
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 power converter assembly comprising:
an input for receiving a direct current (DC) power input;
a flyback converter coupled to the input, the flyback converter including a transformer having a plurality of windings; and
a leakage energy recovery circuit coupled to the flyback converter, the leakage energy recovery circuit configured to couple leakage energy from the transformer to the input in response to a voltage across at least one of the plurality of windings
2. The power converter assembly of claim 1, wherein the leakage energy recovery circuit comprises:
a power converter circuit coupled to the transformer and the input, the power converter circuit configured to selectively couple leakage energy to the input in response to the voltage across the at least one of the plurality of windings.
3. The power converter assembly of claim 2, wherein the leakage energy recovery circuit comprises:
a clamp circuit coupled to the transformer and configured to store leakage energy from the transformer; and
wherein the power converter circuit is configured to couple leakage energy from the clamp circuit to the input in response to the voltage across the at least one of the plurality of windings.
4. The power converter assembly of claim 3, wherein the transformer comprises:
a primary winding;
a secondary winding; and
an auxiliary winding, and wherein the power converter circuit is configured to couple leakage energy from the clamp circuit to the input in response to the voltage across the auxiliary winding.
5. The power converter assembly of claim 4, wherein the power converter circuit comprises a buck converter.
6. The power converter assembly of claim 4, wherein an input of the power converter circuit is coupled to the clamp circuit, and an output of the power converter circuit is coupled to the power converter assembly input.
7. The power converter assembly of claim 6, wherein the power converter circuit comprises a switch coupled between the power converter circuit input and the power converter circuit output, and the switch is controlled by the voltage across the auxiliary winding.
8. The power converter assembly of claim 1, wherein the flyback converter is configured to operate in a boundary conduction mode.
9. The power converter assembly of claim 1, wherein the flyback converter is a quasi-resonant flyback converter.
10. The power converter assembly of claim 1, wherein the flyback converter comprises an output for providing a substantially DC power output, and the assembly further comprises a DC to alternating current (AC) converter having an input coupled to the flyback converter output.
11. A photovoltaic (PV) power system comprising:
a first converter configured to receive a direct current (DC) power input and provide a substantially DC power output, the first converter comprising:
an input for receiving the DC power input;
a flyback converter coupled to the input, the flyback converter including a transformer having a primary winding, a secondary winding, and an auxiliary winding; and
a leakage energy recovery circuit comprising:
a clamp circuit coupled to the primary winding of the transformer and configured to store leakage energy from the transformer; and
an auxiliary converter coupled to the auxiliary winding, the clamp circuit, and the input, auxiliary converter configured to couple leakage energy from the clamp circuit to the input in response to a voltage across the auxiliary winding.
12. The PV power system of claim 11, wherein the auxiliary converter comprises a buck converter.
13. The PV power system of claim 12, wherein an input of the buck converter is coupled to the clamp circuit, and an output of the buck converter is coupled to the first converter input.
14. The PV power system of claim 13, wherein the buck converter comprises a switch coupled between the buck converter input and the buck converter output, and the switch is controlled by the voltage across the auxiliary winding.
15. The PV power system of claim 11, wherein the flyback converter is configured to operate in a boundary conduction mode.
16. The PV power system of claim 11, wherein the flyback converter is a quasi-resonant flyback converter.
17. The PV power system of claim 11, further comprising a second converter configured to receive a DC power input from the first converter and provide an alternating current power output.
18. The PV power system of claim 17, further comprising at least one PV module coupled to the first converter input to provide the DC power input.
19. A method of recovering transformer leakage energy in a power converter, the method comprising:
storing transformer leakage energy in a clamp circuit;
selectively coupling the stored transformer leakage energy to an input of the power converter based on a voltage across an auxiliary winding of the transformer.
20. The method of claim 19, wherein the stored transformer leakage energy is selectively coupled to the input of the power converter by a buck converter.