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Motor driving control circuit, driving method, circuit board and air conditioner

A technology of motor drive control and drive method, which is applied in the fields of circuit boards, air conditioners, drive methods, and motor drive control circuits. High energy efficiency ratio, reducing the effect of inverter conversion loss

Pending Publication Date: 2020-06-30
GD MIDEA AIR-CONDITIONING EQUIP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with the motor winding structure of single inverter, the open-winding motor structure has double inverters, so the operating efficiency of the open-winding motor at low frequency is not high, and it cannot meet the growing energy-saving needs of users.

Method used

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  • Motor driving control circuit, driving method, circuit board and air conditioner
  • Motor driving control circuit, driving method, circuit board and air conditioner
  • Motor driving control circuit, driving method, circuit board and air conditioner

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Embodiment Construction

[0095] Embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary, and are only for explaining the present application, and should not be construed as limiting the present application.

[0096] In the description of the present application, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technica...

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PUM

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Abstract

The invention discloses a drive control circuit, a drive method, a circuit board and an air conditioner. The motor drive control circuit comprises a first power module, a second power module, a firstswitch group, a controller, a totem-pole PFC circuit and a step-down switch circuit, wherein the first power module and the second power module are connected to two sides of an open-winding motor, thecontroller is connected with the totem-pole PFC circuit to control the totem-pole PFC circuit to reach at least one of the following states: a diode rectification state, a low-frequency switching state and a high-frequency switching state; and a diode rectification mode and a low-frequency switching mode of the totem-pole PFC circuit are matched. The controller controls the step-down switch circuit to carry out step-down output, and provides a voltage suitable for low-frequency operation for the first power module, thereby obtaining a higher energy efficiency ratio in a low-frequency operation state of the open-winding motor, the operation efficiency of equipment at a low frequency is improved, and the energy-saving demands are met.

Description

technical field [0001] The present application relates to the technical field of motor drive control, in particular to a motor drive control circuit, a drive method, a circuit board and an air conditioner. Background technique [0002] Frequency conversion motors are widely used in various frequency conversion equipment, such as frequency conversion air conditioners. Frequency conversion motors output matching driving voltage according to the size of the current load, thereby improving the operating efficiency of frequency conversion equipment and achieving the purpose of energy saving. In order to meet the high-frequency work requirements of frequency conversion equipment, some frequency conversion motors adopt an open-winding motor structure, which can achieve high torque and power in high-power drive applications. However, compared with the single-inverter motor winding structure, the open-winding motor structure has dual inverters, so the operating efficiency of the open...

Claims

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Application Information

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IPC IPC(8): H02P25/18F24F11/88F24F11/46F24F11/64
CPCF24F11/46F24F11/64F24F11/88H02P25/18H02P25/182H02P25/184
Inventor 黄招彬徐锦清李金波龙谭曾贤杰胡斌江海昊张杰楠赵鸣关平达时崎久堀部美彦文先仕
Owner GD MIDEA AIR-CONDITIONING EQUIP CO LTD
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