Delta Electronics

A converter system (1) includes an AC source (Vac), a DC output (Vdc), a switching circuit, a boost inductor (L<boost>), a grid inductor (L<2>), a ZVS inductor (L<ZVS>), a ZVS capacitor (C<ZVS>), and a controller (2). The switching circuit includes a first to fourth switches (S1, S2, S3, S4). The first switch (S1) and the third switch (S3) are electrically connected in series, and there is a first node (A) between the first switch (S1) and the third switch (S3). The second switch (S2) and the fourth switch (S4) are electrically connected in series, and there is a second node (B) between the second switch (S2) and the fourth switch (S4). The ZVS inductor (L<ZVS>) and the ZVS capacitor (C<ZVS>) are electrically connected in series between the first node (A) and the second node (B) to form a ZVS branch (11). The controller (2) controls the converter system (1) to transit between a unipolar switching mode and a phase-shift switching mode according to a duty cycle of the switching circuit.

A motor is provided. The motor includes a rotor, and an impeller. The rotor includes a rotor top surface, a rotor bottom surface, and at least two rotor bumps. The at least two rotor bumps are formed on the rotor bottom surface. The impeller is coupled to the rotor and located above the rotor top surface. The at least two rotor bumps have different shapes.

A battery cell monitoring module having a battery cell (10), a circuit board (20), a positive conductor (30), and a negative conductor (40) is provided. The battery cell (10) has a positive electrode head (11) and a negative electrode head (12). The circuit board (20) has a positive power pad (21), a positive voltage pad (22), a negative power pad (23), and a negative voltage pad (24). The positive conductor (30) is arranged on the battery cell (10) and includes a positive power pin (32) electrically connected to the positive electrode head (11) and the positive power pad (21) and a positive voltage pin (33) electrically connected to the positive electrode head (11) and the positive voltage pad (22). The negative conductor (40) is arranged on the battery cell (10) and includes a negative power pin (42) electrically connected to the negative electrode head (12) and the negative power pad (23) and a negative voltage pin (43) electrically connected to the negative electrode head (12) and the negative voltage pad (24).

A hybrid switch device (100) includes a first switch component (10), a second switch component (20), and a controller (50). The first switch component (10) is independently controlled. The second switch component (20) is connected to the first switch component (10) in parallel, and the second switch component (20) is independently controlled. The controller (50) provides a control signal (Sc) to respectively control the first switch component (10) and the second switch component (20) according to a power operating point (P) of an operating curve. Under a light load below the power operating point (P), the control signal (Sc) controls the first switch component (10) to be turned on, and under a heavy load above the power operating point (P), the control signal (Sc) controls the second switch component (20) to be turned on so as to optimize switching performance under hybrid operation of the first switch component (10) and the second switch component (20).

This disclosure relates to a power transformer (200). The power transformer (200) includes a first winding (210), a second winding (220), and a core structure (230). An isolating structure (26) provided with an insulating material or a semi-conductive material to separate the first winding (210) and the second winding (220) and to cover part of the core structure (230).

A bidirectional switch unit includes an inductor (L1, L2, L2a, L2b, L2c, L3, L3a, L3b, L3c), a first switch (S1, S1a, S1b, S1c, S3, S3a, S3b, S3c), a second switch (S2, S2a, S2b, S2c, S4, S4a, S4b, S4c), a first back-to-back switch pair (SA, SA2) and a first capacitor (CA, CAa, CAb, CAc, CC, CCa, CCb, CCc) to form a first switch branch, and a second back-to-back switch pair (SB, SB2) and a second capacitor (CB, CBa, CBb, CBc, CD, CDa, CDb, CDc) to form a second switch branch. The first terminal of the first switch (S1, S1a, S1b, S1c, S3, S3a, S3b, S3c) is connected to the first terminal of the inductor (L1, L2, L2a, L2b, L2c, L3, L3a, L3b, L3c) to form a first common-connected node (P1). The first terminal of the second switch (S2, S2a, S2b, S2c, S4, S4a, S4b, S4c) is connected to the second terminal of the inductor (L1, L2, L2a, L2b, L2c, L3, L3a, L3b, L3c) to form a second common-connected node (P2). A first terminal of the first switch branch is connected to the first switch (S1, S1a, S1b, S1c, S3, S3a, S3b, S3c), and a second terminal of the first switch branch is connected to the second common-connected node (P2). A first terminal of the second switch branch is connected to the first common-connected node (P1), and a second terminal of the second switch branch is connected to the second switch (S2, S2a, S2b, S2c, S4, S4a, S4b, S4c).

A power system (1) is provided. The power system (1) includes an AC-DC conversion module (11), a server board (12), a DC-DC converter (13), and a load (14). The AC-DC conversion module (11) is configured to convert an AC voltage (Vac1) to an intermediate DC voltage (Vdc1) which is greater than or equal to 100 V. The DC-DC converter (13) is disposed on the server board (12), electrically connected to the AC-DC conversion module (11) to receive the intermediate DC voltage (Vdc1), and configured to convert the intermediate DC voltage (Vdc1) to a load voltage (Vdc2). The DC-DC converter (13) includes submodules (131 to 13N) and a controller (130), input terminals of the submodules (131 to 13N) are electrically connected in series, output terminals of the submodules (131 to 13N) are electrically connected in parallel, and the controller (130) controls operation of the submodules (131 to 13N). The load (14) is disposed on the server board (12) and is electrically connected to the DC-DC converter (13) to receive the load voltage (Vdc2). The load (14) is configured to be powered by the load voltage (Vdc2).

A hybrid winding structure (10, 20) for a magnetic component (1a, 1b, 1c, 2) includes at least two PCB-based hybrid winding layers (21), wherein the magnetic component (1a, 1b, 1c, 2) includes a magnetic core (13, 23) having at least one leg (14). The at least two PCB-based hybrid winding layers (21) are wound around the at least one leg (14) of the magnetic core (13, 23), wherein at least one of the at least two PCB-based hybrid winding layers (21) includes a first portion (211) and a second portion (212), wherein the first portion (211) is configured as PCB Litz wire and disposed at a first magnetic field region of the magnetic component (1a, 1b, 1c, 2), the second portion (212) is configured as PCB winding and disposed at a second magnetic field region of the magnetic component (1a, 1b, 1c, 2), and a magnetic field magnitude of the first magnetic field region is higher than a magnetic field magnitude of the second magnetic field region.

A resonant converter (1, 1a) is provided. The resonant converter (1, 1a) includes a primary circuit (2), a secondary circuit (4), and a controller (5). The controller (5) is configured to control a first primary switch (Sa1) and a first secondary switch (Sa2, Sa3) by a first control signal (Sa), control a second primary switch (Sa1') and a second secondary switch (Sa2', Sa3') by a second control signal (Sa'), control a third primary switch (Sbl) and a third secondary switch (Sb2, Sb3) by a third control signal (Sb), control a fourth primary switch (Sb1') and a fourth secondary switch (Sb2', Sb3') by a fourth control signal (Sb'), control a fifth primary switch (Sc1) and a fifth secondary switch (Sc2, Sc3) by a fifth control signal (Sc), and control a sixth primary switch (Sc1') and a sixth secondary switch (Sc2', Sc3') by a sixth control signal (Sc').

A magnetic component (1) includes a frame (2), a magnetic element (3) and a winding (4). The frame (2) includes a central portion (22). The magnetic element (3) is disposed on the frame (2) and includes a plurality of magnetic plates (31). The plurality of magnetic plates (31) are disposed around the central portion (22) and separated from one another. The central post (312) is disposed on one side of the magnetic plate main body (311) adjacent to the central portion (22). The central posts (312) of the plurality of magnetic plates (31) are separated from each other. The first outer post (313) is disposed on one side of the magnetic plate main body (311) away from the central portion (22). The channel (315) is collectively formed between the central post (312) and the first outer post (313), and bounded by a surface of the magnetic plate main body (311). The winding (4) is disposed in the channels (315) of the plurality of magnetic plates (31).