Delta Electronics

An axial flux motor stator structure includes magnetic poles and magnetic field action areas, each magnetic field action area including level-positions arranged axially along a rotation axis, and conductors forming a multi-phase winding. Each conductor, after passing through a lowest level-position of the level-positions, ascends to a higher level-position of the level-positions each time each conductor is routed to a next one of the magnetic field action areas corresponding to a next one of the magnetic poles, until each conductor ascends through a highest level-position of the level-positions. Or each conductor, after passing through a highest level-position of the level-positions, descends to a lower level-position of the level-positions each time each conductor is routed to a next one of the magnetic field action areas corresponding to a next one of the magnetic poles, until each conductor descends through a lowest level-position of the level-positions.

The present disclosure provides a socket assembly (100, 200, 300). The socket assembly (100, 200, 300) includes a socket (1) and a power supply expansion component (2). The socket (1) includes a first housing (11) and a first terminal group (13). The first terminal group (13) is disposed on the first housing (11) and electrically coupled with a power source. The power supply expansion component (2) includes a second housing (21), a second terminal group (23) and a power transmission unit (22). The second terminal group (23) is disposed on the second housing (21) and electrically coupled with the power transmission unit (22). When the first housing (11) is assembled with the second housing (21), the first terminal group (13) and the second terminal group (23) are contacted to establish electrical conduction, and the power source supplies electric energy to the power transmission unit (22) through a transmission path formed by the first terminal group (13) and the second terminal group (23).

The present disclosure provides an inductive power supply (1, 1a, 1b) and an object detection method thereof. A resonant signal is generated when the resonant capacitor (30, 30a) resonates with the power supply coil (20). A voltage detector (32) receives the resonant signal and converts it into a detection signal. A processor (4) obtains a resonant cycle of the resonant signal according to the detection signal. After the driving unit (31, 31a) drives the power supply coil (20), the resonant capacitor (30, 30a) resonates with the power supply coil (20), and a timer of the processor (4) starts timing. When the resonant cycle exceeds a cycle threshold, the timer stops timing. The processor (4) calculates and obtains a measurement of time length according to an interval between the start time and the stop time of the timer. When the measurement of time length is less than a preset time length, the processor (4) determines that there is an object within the power transmission range of the power supply module (2).

The power device (1) includes power module (2, 2a, 2b, 2c, 2d, 2e). Each power module (2, 2a, 2b, 2c, 2d, 2e) includes a substrate (3), a chip (4), metal pillars (5), a molding material (6) and current pins. The substrate (3) includes a metal surface (31). The chip (4) is disposed on the metal surface (31). The metal pillars (5) are disposed on the metal surface (31) along a normal direction of the substrate (3). The molding material (6) covers the substrate (3), the chip (4) and the metal pillars (5). The lateral surface (53) of each metal pillar (5) is totally covered by the molding material (6). The top surface (51) of each metal pillar (5) is exposed from a surface of the molding material (6). The first terminal (711) of the current pin (71) of each power module (2, 2a, 2b, 2c, 2d, 2e) is disposed on the top surface (51) of corresponding metal pillar (5) by welding or sintering. The second terminal (712) of corresponding current pin (71) of corresponding power module (2, 2a, 2b, 2c, 2d, 2e) is disposed on the top surface (51) of corresponding metal pillar (5) of another power module (2, 2a, 2b, 2c, 2d, 2e) by welding or sintering.

A transformer module includes a primary side assembly, a secondary side assembly and a magnetic element. The primary side assembly has a first cover body, a first pillar body and a first coil. The first pillar body is connected to the first cover body. The first coil is wound on the first pillar body. The secondary side assembly has a second cover body, a second pillar body and a second coil. The second pillar body is connected to the second cover body. The second coil is wound on the second pillar body. The magnetic element is disposed between the primary side assembly and the secondary side assembly. The first pillar body is fixedly connected to the second pillar body, and the size of the first pillar body is larger than the size of the second pillar body.

A stator assembly (100) includes a core member (108), a bracket assembly (103), a first winding assembly (106) and a second winding assembly (110). The core member (108) has a first groove (1081) and a second groove (1082). The bracket assembly (103) includes a first fixed bracket (104) and a second fixed bracket (105). The first fixed bracket (104) is disposed on a first side (SS1) of the core member (108) and has a first engaging structure (1041) that engages with the first groove (1081). The second fixed bracket (105) is disposed on a second side (SS2) of the core member (108) and has a second engaging structure (1051) that engages with the second groove (1082). The first winding assembly (106) is wound around a third side (SS3) of the core member (108). The second winding assembly (110) is wound around a fourth side (SS4) of the core member (108). The first winding assembly (106) and the second winding assembly (110) are arranged along a first axis (AX1).

A chassis device (9, 9a) is disclosed and includes an accommodation space (8, 8a), a chassis unit (1, 1a), a sliding component (2, 2a), a positioning component (3) and a handle component (4). The sliding component (2, 2a) is disposed between the accommodation space (8, 8a) and the chassis unit (1, 1a) along the first direction. The positioning component (3) is arranged in the accommodation space (8, 8a). The chassis unit (1, 1a) includes a guiding groove (11) arranged along the first direction and spatially corresponding to the positioning component (3). When the chassis unit (1, 1a) is placed into the accommodation space (8, 8a) along the first direction, the positioning component (3) is limited to the guiding groove (11). The handle component (4) is pivotally mounted on the chassis unit (1, 1a) and includes a hook end (41) and a holding end (42). When the handle component (4) is in a first position, the hook end (41), the guiding groove (11) and the positioning component (3) are aligned, allowing the hook end (41) engaging the positioning component (3) and driving the handle component (4) to rotate to a second position.

A motor preheating system (1) and a control method are provided. The driving circuit (35) provides a direct current by the switch (351) to control the motor (2). The motor temperature control unit (31) performs an outer-loop control and includes a switch temperature limiter (313). The motor temperature control unit (31) generates a maximum switch temperature command (T5) according to a comparison result between a motor temperature feedback signal (T2) of the motor (2) and a motor temperature command (T1). The switch temperature control unit (32) performs a first inner-loop control and includes a current limiter (323). The switch temperature control unit (32) generates a maximum current command (T9) according to the maximum switch temperature command (T5) and a maximum switch temperature (T6) of the driving circuit (35). The current control unit (33) performs a second inner-loop control to control the driving circuit (35) according to the maximum current command (T9), so that the motor (2) is controlled. The maximum current command (T9) is a continuous output current.

A voltage compensation system (1, 1a) and an uninterruptible power supply (1, 1a) are provided. The voltage conversion device (3) selectively receives the first AC input source (AC1) or the second AC input source (AC2) through the first switching device (2), and converts the first AC input source (AC1) or the second AC input source (AC2) into a DC voltage (V1). The energy buffering device (8) is connected with the DC busbar (4). The energy buffering device (8) includes a bidirectional voltage conversion device (82) and an energy tank (81). One terminal of the bidirectional voltage conversion device (82) is connected with the DC busbar (4). The energy tank (81) is connected with the other terminal of the bidirectional voltage conversion device (82). During a dead time of the first switching device (2) switching between the first AC input source (AC1) and the second AC input source (AC2), the controller (9) controls the bidirectional voltage conversion device (82), so that the DC voltage (V1) is compensated by the energy tank (81).

A system includes a maximum power point (MPP) tracker (101) coupled between a first solar panel string (112) and a DC voltage bus (Vdc), wherein the MPP tracker (101) includes a first DC/DC converter (114) and is configured to perform a maximum power point tracking (MPPT) control scheme on the first DC/DC converter (114), a power reservoir (102) coupled between a second solar panel string (122) and the DC voltage bus (Vdc), wherein the power reservoir (102) includes a second DC/DC converter (124), and an inverter (154) coupled between the DC voltage bus (Vdc) and a power grid (154), wherein the inverter is configured to operate in multiple modes including a grid-forming (GFM) mode and a grid-following (GFL) mode, and wherein in the GFM mode, the second DC/DC converter (124) is configured to regulate a voltage on the DC voltage bus (Vdc).