Abstract: A motor controller, including: a control box, a control circuit board, a first press strip, a control chip, and a plurality of plastic press blocks. The control box includes: an inner wall, a bottom, and a cavity formed by the inner wall and the bottom. The control circuit board is disposed on the bottom of the control box. The control chip is disposed on an outer edge of a top face of the control circuit board. The plastic press blocks are disposed in a middle of an end face of the first press strip. Two ends of the first press strip and the inner wall of the control box are assembled together. The control chip is pressed on the inner wall of the control box via the plastic press blocks.

Abstract: A motor controller, including: a supporting frame, a control circuit board, and a control box. The control box includes: a cavity, a base plate, and a plurality of fins. The control circuit board is disposed on the base plate in the cavity. The fins are disposed outside the cavity on an outer side surface of the base plate. Cooling ducts are formed between adjacent fins. The control box is fixed on the supporting frame.

Abstract: A motor controller, including: a box body, a capacitor module, and an inverse module. The box body includes a chamber, and a radiator is disposed in the chamber. The radiator divides the chamber to yield a first chamber and a second chamber. The inverse module is disposed on an upper surface of the radiator in the first chamber. The capacitor module is disposed on a lower surface of the radiator in the second chamber. The radiator includes a cooling waterway, and a water inlet and a water outlet that communicate with the cooling waterway. The cooling waterway is adapted to cool the capacitor module and the inverse module.

Abstract: A method for integrating a traction motor and an inverter, the method including: 1) providing a traction motor, the traction motor including a motor housing and a coil winding; 2) providing an inverter, the inverter including: an inverter housing, and an IGBT module; 3) independently installing the inverter in the inverter housing to form an interface, the interface including a mechanical interface and a high-voltage power interface; 4) using the mechanical interface to install the inverter housing on the motor housing to form an entire body; and 5) using the high-voltage power interface to provide a high voltage electric connection between the coil winding of the traction motor and the IGBT module of the inverter.

Abstract: A method for displaying state parameters using an integrated controller. The integrated controller includes: a central control microprocessor, an LED display, an inquiry button, and a plurality of state parameter detecting units. The method includes: 1) detecting data of a plurality of monitoring points by the plurality of state parameter detecting units, and sending the data to the central control microprocessor; 2) receiving an order from the inquiry button by the central control microprocessor, and actively scanning state parameters of the monitoring points by the central control microprocessor by turns; and 3) transmitting the state parameters from the central control microprocessor to the LED display in accordance with the order input from the inquiry button, and sequentially displaying the state parameters on the LED display in a rolling mode.

Abstract: Systems and methods for providing constant airflow based on direct motor power control and advanced motor system modeling are described. A power and speed of a motor may be determined based on static pressure in the system. A target airflow rate for the system may be obtained, and a target motor power that yields the target airflow rate in the system may be determined based on the determined speed of the motor and the obtained target airflow rate for the system. A determination of whether the determined motor power is approximately equal to the target motor power may be made, and the power of the motor may be adjusted when the motor power is not approximately equal to the target motor power.

Abstract: A motor controller, including: a control box including an inner wall; a circuit board; a dissipater; an IGBT module; and an insulating piece. The circuit board is disposed inside the controller box. The dissipater is disposed on the inner wall of the control box. The IGBT module is disposed on the dissipater and is in electric connection with the circuit board. The insulating piece is disposed between the dissipater and the controller and prevents the dissipater from contacting with the control box.

Abstract: Intermediate connecting devices and electronically commutated (ECM) motors for HVAC systems are disclosed, as well as methods for their use within the HVAC systems. An interface component device coupled to a system controller and an ECM motor may be configured to receive a first and second signal, and convert the voltage across the received signals to a lower-value voltage signal compatible with the ECM motor. The converted voltage signal may be transmitted to the ECM motor to cause the motor to operate in one of a plurality of operation modes. An ECM motor that includes a tap detection circuit and a processor may be configured to receive a voltage signal from the interface component and detect at which input port the voltage signal is received. The ECM motor may select the operation mode for the motor based on the detection of which input port received the voltage signal.

Abstract: A DC permanent magnet synchronous motor, including: a motor body including a rotating shaft, a permanent rotor assembly, a stator assembly, and a housing assembly; a motor controller including a first microprocessor for drive control, an inverter circuit, and a detection circuit for detecting operating parameters of the motor; and an external control card including a second microprocessor for application control. The operating parameters of the motor are input into the first microprocessor by the detection circuit. The first microprocessor outputs a PWM signal to control the inverter circuit. An output end of the inverter circuit is connected to a coil winding. The external control card is disposed outside the motor body and is connected to the motor body via an electric wire. The second microprocessor and the first microprocessor are interconnected so that they can communicate.

Abstract: A device for detecting blockage of an air filter mesh, including: an air inlet, an air outlet, an air duct, a fan or a wind wheel, a blower motor, an air filter mesh, and a controller. The controller includes a main control board including: a microprocessor, an inverter circuit, and a motor operation parameter detecting circuit. The air filter mesh is disposed in the air duct. The motor operation parameter detecting circuit inputs a real time operation parameter into the microprocessor, and the output terminal of the microprocessor controls the inverter circuit. A function module of the microprocessor calculates a detected air volume according to the real time operation parameter. When the detected air volume is smaller than a preset air volume, the microprocessor determines that the air filter mesh is obstructed and outputs a signal to an alarm circuit to trigger an alarm.

Abstract: A structure for mounting a Hall effect sensor, the structure including: a mounting bracket, a mounting plate, a left supporting column, a right supporting column, and a first supporting column. The left supporting column and the right supporting column are protruded upwards from top surfaces of two adjacent teeth at the inner side of a certain winding slot, respectively. The first supporting column is protruded upwards from the top surface of the circular yoke at the outer side of the winding slot. The mounting plate is disposed on top surfaces of the first supporting column, the left supporting column, and the right supporting column. The mounting bracket is installed at the bottom of the mounting plate. The Hall effect sensor is installed in the mounting bracket.

Abstract: A lead sheath assembly, including a lead sheath; a plurality of external wires; a jumper box; and a connecting terminal. The lead sheath includes a cavity. The jumper box includes: a plurality of through holes, a front end including a front interface, and a rear end including a rear interface. The external wires are mounted on the lead sheath. The jumper box is disposed in the cavity. The connecting terminal is disposed in the through hole.

Abstract: An induced draught fan, including: a motor, the motor including a shaft; a volute; and a wind wheel. The volute is provided with an air intake and an air outlet. The wind wheel is arranged inside the volute. The top of the volute is provided with a through-hole. The shaft of the motor passes through the through-hole and is connected to the wind wheel. A seal ring is arranged on the volute corresponding to the through-hole. An outer side of the seal ring is provided with an annular groove. The volute is embedded in the annular groove. The middle of the seal ring is provided with a center hole. The middle of the side wall of the center hole is provided with a ring-like convex edge. The shaft passes through the center hole and contacts with the ring-like convex edge.

Abstract: Systems and methods associated with an HVAC system and a multi-functional ECM motor for use in the HVAC system are disclosed. The motor controller of the ECM motor includes a microprocessor, a tap detection circuit and a power source portion. The tap detection circuit is coupled to several tap input lines. The motor also includes first and second AC input wires, a common wire, a ground wire, a first jumper wire and a second jumper wire. Each tap input line is coupled to the first input terminal of one current sensing unit. The first jumper wire is coupled to the second AC input wire, and the second jumper wire is coupled to the common wire. By coupling different wires of the ECM motor differently when replacing a PSC motor than when replacing ECM motors, the ECM motor is configured to replace PSC motors and ECM motors in HVAC systems.

Abstract: A control method for constant airflow controlled by a direct power-controlled PM motor, wherein the PM motor is installed in an HVAC system to drive the rotation of a fan wheel, and wherein the PM motor has a stator component, permanent magnet rotor components, and a motor controller. In some embodiments, the motor controller includes an operation parameters sensing circuit and a microprocessor.

Abstract: Intermediate connecting devices and electronically commutated (ECM) motors for HVAC systems are disclosed, as well as methods for their use within the HVAC systems. An interface component device coupled to a system controller and an ECM motor may be configured to receive a first and second signal, and convert the voltage across the received signals to a lower-value voltage signal compatible with the ECM motor. The converted voltage signal may be transmitted to the ECM motor to cause the motor to operate in one of a plurality of operation modes. An ECM motor that includes a tap detection circuit and a processor may be configured to receive a voltage signal from the interface component and detect at which input port the voltage signal is received. The ECM motor may select the operation mode for the motor based on the detection of which input port received the voltage signal.

Abstract: A method for increasing rotational speed range of an ECM motor, including: 1) starting the motor and initializing parameters; 2) reading the rotor position signal from the hall sensor by the microprocessor and updating the rotor angle; 3) reading the DC bus current I and the rotational speed n of the motor; 4) inputting a target rotational speed S from an external device, acquiring the target rotational speed S by the microprocessor, calculating the rotational difference e, and utilizing a rotational speed PI regulator to output a regulating parameter V_D; 5) calculating an advance angle ?=F(I, n) by the microprocessor, and calculating a real-time angle of the rotor ?=?×t by the microprocessor; and 6) calculating a PWM signal input into the inverter circuit, and outputting a PWM chopper voltage U by the inverter circuit, where U=F(V_D, ?+?).

Abstract: A DC brushless motor having an external rotor, the motor including: a shaft, a stator assembly, an end cover, a housing, and a plurality of permanent magnets. The end cover includes a bearing. The housing includes: an inner wall, and an end. The shaft is connected with the stator assembly. The stator assembly is arranged inside the housing. The permanent magnets are positioned outside the stator assembly on the inner wall of the housing. The end cover is disposed on the end of the housing. The shaft is disposed on the bearing of the end cover.

Abstract: A method for correcting torque including: presetting rotational speed of each gear by corresponding gear input lines of a microprocessor; providing a mechanism to select one rotational speed set; electing N power points within a range of the rated power, acquiring a set of torque data corresponding to each set of the rotational speed at each power point, and storing a total 2×N sets of torque data; allowing the motor to enter the torque correction mode; recording a steady torque Tadj when the motor operates in a steady state; and comparing the steady torque Tadj with a maximum gear torque Tmax, and selecting the set of torque data to which T[M]max belongs when the steady torque Tadj satisfies the relationship: 110%×T[M?1]max<Tadj?110%×T[M]max, M=1, 2, . . . , N; when M=1, T0max=0.

Abstract: An electronically commutated motor, including: a motor body and a motor controller. The motor controller includes a control box and a circuit board disposed in the control box. The circuit board includes a microprocessor, an inverter circuit, a gear detection circuit, and a power supply. The gear detection circuit includes a plurality of current sensing units. The output end of the power supply supplies power to each circuit, and a first AC input end of the power supply is connected to a first power input line N. The gear detection circuit is connected to a plurality of gear input lines. At least one of the gear input lines is selected to be in an energized state. Each gear input line is correspondingly connected to a first input end of one of the current sensing units.