Unlock instant, AI-driven research and patent intelligence for your innovation.

Control method of motor, and control method of electrical equipment applying motor and provided with air duct

A control method and technology of electrical equipment, applied in the direction of single motor speed/torque control, electronic commutator, electrical components, etc., can solve the problems that affect product performance, the air volume cannot be reduced sharply, and achieve the effect of ensuring product performance

Active Publication Date: 2016-11-23
ZHONGSHAN BROAD OCEAN
View PDF13 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: when the range hood is installed on a high floor, the static pressure in the actual environment may be greater than the maximum design static pressure, which requires that the air volume should not be reduced sharply, but only slowly, otherwise it will affect the performance of the product

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Control method of motor, and control method of electrical equipment applying motor and provided with air duct
  • Control method of motor, and control method of electrical equipment applying motor and provided with air duct
  • Control method of motor, and control method of electrical equipment applying motor and provided with air duct

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 2As shown, in a typical ventilation duct (referred to as the air duct), an exhaust system (such as a gas stove or range hood) is installed. Net (i.e. air filter), when the motor starts to draw air.

[0044] Such as image 3 , Figure 4 , Figure 5 , Figure 6 As shown, the range hood of the present invention includes a motor, a wind wheel, a power supply circuit and a system controller, the system controller has a main control circuit board for realizing the function of the range hood itself, and the main control circuit board The driving motor drives the wind wheel to rotate, wherein: the motor unit is a motor unit without a controller, including a rotating shaft, a permanent magnet rotor assembly, a stator assembly and a casing assembly, and permanent magnets are installed on the permanent magnet rotor assembly, The permanent magnet rotor assembly and the stator assembly form a magnetic coupling, and the stator assembly includes a stator core and ...

specific Embodiment 2

[0053] Such as Figure 10 As shown, the electrical equipment of the present invention is an air conditioner, and the air conditioner includes a motor, a wind wheel, an air duct, a power supply circuit and a system controller, and the system controller has a main control circuit board that realizes the function of the air conditioner itself. The main control circuit board has a system microprocessor and a power supply circuit, and the power supply circuit supplies power to each part of the circuit;

[0054] Such as Figure 11 , Figure 12 , Figure 13 , Figure 14 , Figure 15 As shown, the motor of this embodiment generally consists of a motor controller 2 and a motor unit 1. The motor unit 1 includes a stator assembly 12, a rotor assembly 13 and a casing assembly 11, and the stator assembly 13 is installed on the casing assembly 11 Above, the motor unit 1 is equipped with a Hall sensor 14 for detecting the rotor position, the rotor assembly 13 is set on the inside or out...

Embodiment 2

[0055] The motor of embodiment two is a 3-phase brushless DC permanent magnet synchronous motor, and the rotor position measurement circuit 14 generally adopts 3 Hall sensors, and the 3 Hall sensors detect the rotor position of a 360-degree electrical angle cycle respectively, and each revolution is 120 degrees. The electrical angle changes the energization of the coil windings of each phase of the stator assembly 12 once, forming a 3-phase 6-step control mode. After the AC input (ACINPUT) passes through the full-wave rectification circuit composed of diodes D7, D8, D9, and D10, the DC bus voltage Vbus is output at one end of the capacitor C1. The DC bus voltage Vbus is related to the input AC voltage, and the AC input (ACINPUT ) voltage is determined, the line voltage UP of the 3-phase winding is the PWM chopper output voltage, UP=Vbus*w, w is the duty cycle of the PWM signal input from the motor microprocessor to the inverter circuit, changing the line voltage UP can To chan...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a control method of a motor, and a control method of electrical equipment applying the motor and provided with an air duct. According to the control method of the motor, the motor operates in an operating state of constant air flow in an operation range in which an external static pressure value P is less than or equal to the maximum designed static pressure value P0, a DC bus current and a motor rotation speed increase with the rise of the external static pressure; the DC bus current and the motor rotation speed increase with the rise of the external static pressure in a range in which the external static pressure value P is greater than the maximum designed static pressure value P0 and less than or equal to a static pressure P1, input power of the motor is limited in a range in which the external static pressure value P is greater than or equal to the static pressure P1 and less than static pressure P2, and the DC bus current is no longer increased; and the DC bus current is controlled to decrease slowly with the rise of the external static pressure when the external static pressure value P is greater than the static pressure P2. By adopting the two control methods, the air flow output does not fall sharply through appropriate control of the current even if the external static pressure is greater than the maximum designed static pressure, the product performance is stable, and user demands are met.

Description

Technical field: [0001] The invention relates to a control method of a motor and a control method of electrical equipment with an air duct using the same. Background technique: [0002] In household air conditioners, range hoods and other electrical equipment with air ducts, there are motor-driven wind wheels installed in the air ducts to supply or extract air. The motors usually have several control modes: constant speed, constant torque and constant air volume. model. In order to obtain a constant output air volume or suction air volume, the constant air volume working mode will be adopted, but the static pressure in the air duct often changes with the passage of time, for example, due to dust accumulation in the pipe or clogged filter, the static pressure is also due to the installation of the pipe. It is often higher than the standard static pressure of the manufacturer's laboratory's nominal system. Constant air volume control can bring constant air volume to users un...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/08H02P6/16H02K11/00
Inventor 赵勇孙海荣
Owner ZHONGSHAN BROAD OCEAN