Simulation Study of PFC Inductor for Variable Frequency Air Conditioner

doi:10.11985/2018.01.005

Abstract

Abstract:

In view of the local overheating and the higher temperature rise of the inductance in the power factor correction (PFC) circuit of the inverter air conditioner during operation, the electromagnetic coupling simulation is adopted to optimize the design of the inductor. The three-dimensional electromagnetic thermal field simulation model of PFC inductor is established by the finite element analysis method. The power loss of each component of the reactor is calculated by electromagnetic simulation, and the thermal field is simulated as a heat source. By changing the number of turns and the size of the magnetic core, four different design schemes are simulated. The magnetic field thermal coupling analysis is carried out, and the optimal design scheme is given. The actual operation shows that the optimized PFC inductor effectively reduces the temperature rise and loss, and the design method is of reference value for the design of other inductors.

Key words: Variable frequency air conditioner, power factor correction inductance, finite element analysis, electromagnetic thermal field

CLC Number:

TM402

Xin Jing,Chunfang Wang,Shiwei Wang,Fang Wang. Simulation Study of PFC Inductor for Variable Frequency Air Conditioner[J]. Journal of Electrical Engineering, 2018, 13(1): 30-37.

Figures/Tables 20

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特性	气雾化铁硅铝	非晶磁粉心	高磁通粉心	铁镍钼粉心	破碎铁硅铝粉心	铁硅粉心
成分组成	Fe-Si-Al	Fe-Si-B	Fe-Ni	Fe-Ni-Mo	Fe-Si-Al	Fe-Si
居里温度/℃	600	415	500	400	600	700
Bs/Gs	10 500	15 600	17 000	7 500	10 500	18 100
损耗/(mW/cm³)(100kHz,0.1T)	320	750	450	450	650	1 500
%Ldc @100 Oe(60μ)(%)	56	68	77	53	48	74
相对成本	低	中	高	高	低	低

	a/mm	b/mm	c/mm	d/mm
方案一	42	43	18	16
方案二	36.6	61.6	39	14.4
方案三	42	50	24	16.5
方案四	42	46	20	16.5

	最高温度/℃	室温/℃	铜损/W	铁损/W
方案一	99.7	21.6	6.68	1.9
方案二	114.6	21.6	8.40	3.2
方案三	86.9	21.6	6.58	1.7
方案四	84.5	21.6	6.58	1.9

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