SVPWAM Modulation Strategy and Its Loss Analysis for Current Source Inverter

doi:10.16628/j.cnki.2095-8188.2022.12.010

Abstract

Abstract:

In order to reduce the number of switching operations and increase the power density of the inverter system,a SVPWAM modulation strategy is proposed.Compared with the traditional muti-segment SVPWM modulation strategy,the proposed strategy reduces the number of switching states in the sector by proportionally allocating the action time of the traditional(pass-through) zero vector to the effective vector.At the same time,through reasonable selection and insertion of non-traditional(open) zero vectors,it can ensure that there is only one switch tube operation when switching the switch state,which can reduce the number of switching actions and switching losses.In order to analyze the device of switching loss under the modulation method in detail,the co-simulation model of the traditional multi-segment SVPWM and SVPWAM modulation methods is constructed by using Slimlink and PLECS software,and the device of losses and analysis under two different modulation modes are given based on the experimental results.

Key words: space vector pulse width amplitude modulation(SVPWAM), current source Trans quasi-Z source inverter, heat loss, co-simulation

CLC Number:

TM464

ZHAO Yun, AI Yuangao, XIANG Qiangming, XIA Guoqiang, HUANG Jiazhi. SVPWAM Modulation Strategy and Its Loss Analysis for Current Source Inverter[J]. LOW VOLTAGE APPARATUS, 2022, 0(12): 61-69.

Figures/Tables 16

扇区	有效矢量一	开路零矢量	有效矢量二
Ⅰ	$100010$	$100000$	$100001$
Ⅱ	$100001$	$000001$	$010001$
Ⅲ	$010001$	$010000$	$010100$
Ⅳ	$010100$	$000100$	$001100$
Ⅴ	$001100$	$001000$	$001010$
Ⅵ	$001010$	$000010$	$100010$

References 19

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扇区	N	T₁'	T₂'	S₁占空比	S₃占空比	S₅占空比	S₄占空比	S₆占空比	S₂占空比
I	4	XT_s'	YT_s'	1	0	0	0	D₁	D₂
II	6	T_s'/Y	ZT_s'	D₁	D₂	0	0	0	1
III	2	T_s'/Z	T_s'/X	0	1	0	D₂	0	D₁
IV	3	XT_s'	YT_s'	0	D₁	D₂	1	0	0
V	1	T_s'/Y	ZT_s'	0	0	1	D₁	D₂	0
VI	5	T_s'/Z	T_s'/X	D₂	0	D₁	0	1	0

参数	D_op
参数	0	0.1
P_{_sw_SVPWM}/W	12.80	14.30
P_{_cond_SVPWM}/W	16.93	7.77
占比(P_{_sw}/P_{_total})/%	43.05	64.79
P_{_sw_SVPWAM}/W	8.12	5.70
P_{_cond_SVPWAM}/W	9.31	5.92
占比(P_{_sw}/P_{_total})/%	46.58	49.05