CN104201921B - 一种逆变系统中死区补偿控制方法 - Google Patents

一种逆变系统中死区补偿控制方法 Download PDF

Info

Publication number
CN104201921B
CN104201921B CN201410508830.5A CN201410508830A CN104201921B CN 104201921 B CN104201921 B CN 104201921B CN 201410508830 A CN201410508830 A CN 201410508830A CN 104201921 B CN104201921 B CN 104201921B
Authority
CN
China
Prior art keywords
voltage
current
electric current
model
output voltage
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201410508830.5A
Other languages
English (en)
Other versions
CN104201921A (zh
Inventor
张海波
刘俊岭
孙邦伍
王兆明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NANJING GUANYA POWER EQUIPMENT CO Ltd
Original Assignee
NANJING GUANYA POWER EQUIPMENT CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NANJING GUANYA POWER EQUIPMENT CO Ltd filed Critical NANJING GUANYA POWER EQUIPMENT CO Ltd
Priority to CN201410508830.5A priority Critical patent/CN104201921B/zh
Publication of CN104201921A publication Critical patent/CN104201921A/zh
Application granted granted Critical
Publication of CN104201921B publication Critical patent/CN104201921B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Abstract

本发明公开了一种新型逆变系统中死区补偿控制方法,通过构建内在模型对电压、电流指令进行修正以得到期望的电压电流幅值及波形,其流程为:首先构建内在模型R(K),电压或电流给定初始指令R(K1),经闭环PI调节,实际输出电压或电流R(K2);然后判断实际输出电压或电流R(K2)是否与构建模型R(K)相同;若此二者不同,则对其误差再次调节,将调节结果记录至指定数组en,并将en对应叠加于电压或电流指令R(K1),如此反复,逐周期对误差进行调节,则最终将输出稳定于内在模型R(K);若R(K)为一标准正弦波,则可消除输出电压或电流R(K2)的死区。

Description

一种逆变系统中死区补偿控制方法
技术领域
本发明涉及一种电力电子技术及控制的交叉学科领域,尤其涉及一种逆变系统中死区补偿控制方法。
背景技术
随着电力电子技术的迅速发展,SPWM逆变器已在UPS、光伏逆变器、变频器等系统中得到广泛应用。为达到效率高、体积小、成本低廉等要求,主电路的开关频率越来越高,在理论上,逆变器输出电压、电流应与给定指令相同,但在实际应用中,由于死区时间的设置和开关器件固有特性的影响,给输出电压造成了严重的波形畸变和基波电压损失,基于上述因素,死区补偿技术得到了很好的发展与应用。
发明内容
针对现有技术中存在的问题,本发明提供了一种逆变系统中死区补偿控制方法,来满足输出电压、电流减小畸变的影响。
本发明的技术解决方案是:一种逆变系统中死区补偿控制方法,通过构建内在模型对电压、电流指令进行修正以得到期望的电压电流幅值及波形。
本发明流程为:首先构建内在模型R(K),电压或电流给定初始指令R(K1),经闭环PI调节,实际输出电压或电流R(K2);然后判断实际输出电压或电流R(K2)是否与构建模型R(K)相同;若此二者不同,则对其误差再次调节,将调节结果记录至指定数组en,并将en对应叠加于电压或电流指令R(K1),如此反复,逐周期对误差进行调节,则最终将输出稳定于内在模型R(K);若R(K)为一标准正弦波,则可消除输出电压或电流R(K2)的死区。
本发明基于DSP实现。
本发明的有益效果是:本发明与传统方法和一般方法相比,具有快速性、准确性以及通用性的特点,能够快速准确消除逆变过程中的PWM死区,适用于各种功率、单相、三相逆变器。
附图说明
图1为本发明逆变器系统死区补偿控制流程图。
具体实施方式
以下结合附图和具体实施例对本发明技术方案作进一步的详细说明。
如图1所示,图1为本发明逆变器系统死区补偿控制流程图。
一种逆变系统中死区补偿控制方法,通过构建内在模型对电压、电流指令进行修正以得到期望的电压电流幅值及波形。
本发明流程为:首先构建内在模型R(K),电压或电流给定初始指令R(K1),经闭环PI调节,实际输出电压或电流R(K2);然后判断实际输出电压或电流R(K2)是否与构建模型R(K)相同;若此二者不同,则对其误差再次调节,将调节结果记录至指定数组en,并将en对应叠加于电压或电流指令R(K1),如此反复,逐周期对误差进行调节,则最终将输出稳定于内在模型R(K);若R(K)为一标准正弦波,则可消除输出电压或电流R(K2)的死区。
本发明基于DSP实现。
本发明与传统方法和一般方法相比,具有快速性、准确性以及通用性的特点,能够快速准确消除逆变过程中的PWM死区,适用于各种功率、单相、三相逆变器。
虽然本发明已以较佳实施例公开如上,但它们并不是用来限定本发明,任何熟习此技艺者,在不脱离本发明之精神和范围内,自当可作各种变化或润饰,但同样在本发明的保护范围之内。

Claims (1)

1.一种逆变系统中死区补偿控制方法,其特征在于:通过构建内在模型对电压、电流指令进行修正以得到期望的电压电流幅值及波形;
其流程为:首先构建内在模型R(K),电压或电流给定初始指令R(K1),经闭环PI调节,得到实际输出电压或电流R(K2);然后判断实际输出电压或电流R(K2)是否与内在模型R(K)相同;若此二者不同,则对其误差再次调节,将调节结果记录至指定数组en,并将en对应叠加于电压或电流给定初始指令R(K1),如此反复,逐周期对误差进行调节,则最终将输出稳定于内在模型R(K);若R(K)为一标准正弦波,则可消除实际输出电压或电流R(K2)的死区;
本方法基于DSP实现。
CN201410508830.5A 2014-09-28 2014-09-28 一种逆变系统中死区补偿控制方法 Expired - Fee Related CN104201921B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410508830.5A CN104201921B (zh) 2014-09-28 2014-09-28 一种逆变系统中死区补偿控制方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410508830.5A CN104201921B (zh) 2014-09-28 2014-09-28 一种逆变系统中死区补偿控制方法

Publications (2)

Publication Number Publication Date
CN104201921A CN104201921A (zh) 2014-12-10
CN104201921B true CN104201921B (zh) 2017-10-03

Family

ID=52087165

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410508830.5A Expired - Fee Related CN104201921B (zh) 2014-09-28 2014-09-28 一种逆变系统中死区补偿控制方法

Country Status (1)

Country Link
CN (1) CN104201921B (zh)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101684706B1 (ko) * 2010-05-06 2016-12-08 엘에스산전 주식회사 인버터의 출력 전류 왜곡 보상장치
CN102647141B (zh) * 2011-12-26 2016-01-20 东方日立(成都)电控设备有限公司 一种电压矢量闭环补偿方法
CN102624276A (zh) * 2012-04-25 2012-08-01 杭州电子科技大学 一种新颖的交流伺服逆变器死区效应补偿的方法
CN103401450B (zh) * 2013-07-30 2016-01-20 中国西电电气股份有限公司 一种死区补偿的方法
CN104037768B (zh) * 2014-06-25 2016-03-16 哈尔滨同为电气股份有限公司 H桥级联statcom自适应死区补偿方法

Also Published As

Publication number Publication date
CN104201921A (zh) 2014-12-10

Similar Documents

Publication Publication Date Title
CN103227581B (zh) 一种谐波下垂控制的逆变器并联谐波环流抑制方法
Sun et al. Impedance design of quasi-Z source network to limit double fundamental frequency voltage and current ripples in single-phase quasi-Z source inverter
CN207135021U (zh) 一种多逆变器电机控制器
CN104092245A (zh) 交流旁路单相光伏逆变器及其控制方法和控制装置
Liu et al. Quasi-Z-source three-to-single-phase matrix converter and ripple power compensation based on model predictive control
Tariq et al. Power quality improvement by using multi-pulse AC-DC converters for DC drives: Modeling, simulation and its digital implementation
EP3952046A1 (en) Photovoltaic inverter and corresponding switch frequency control method
CN112865585B (zh) 一种单逆变器固定脉冲频率输出双频正弦波的方法
CN102386795A (zh) 逆变器的谐波抑制装置
Liu et al. Carrier‐overlapping PWM‐based hybrid current control strategy applied to two‐stage grid‐connected PV inverter
Zahira et al. SPWM technique for reducing harmonics in three-phase non-linear load
CN104201921B (zh) 一种逆变系统中死区补偿控制方法
Yao et al. Research on grid-connected interleaved inverter with L filter
CN112803823B (zh) 脉冲宽度调制方法、逆变器和控制器
CN110854905B (zh) 开绕组双逆变器光伏发电系统的功率均分控制方法
Yepes et al. Performance enhancement for digital implementations of resonant controllers
Yu et al. Space vector pulse‐width modulation theory and solution for Z‐source inverters with maximum constant boost control
Zhang et al. Uniform carrier‐based PWM method for three‐phase three‐level three‐wire and four‐wire converter system with neutral‐point balancing
Kim et al. Novel pulse-width modulation strategy to minimize the switching losses of Z-source inverters
CN103715875A (zh) 一种开关频率的调节方法、装置及逆变器
Song et al. Analysis and elimination of circulating current caused by dead time for a grid‐connected inverter parallel system
Hwang et al. A novel single-phase interleaved Bi-directional inverter for grid-connection control
CN104201924A (zh) 带续流开关的中点箝位型单相非隔离光伏逆变器的控制方法
Amimoto et al. Performance Verification of High‐Efficiency PV Power Conditioner Integrated with SiC MOSFETs and Cooperative Control Method
CN104184353A (zh) 一种基于逆变器并联环流的抑制方法

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CP02 Change in the address of a patent holder
CP02 Change in the address of a patent holder

Address after: No. 5, New Model Road, Gulou District, Nanjing City, Jiangsu Province

Patentee after: Nanjing Guanya Power Equipment Co., Ltd.

Address before: 210032 Yuxi Road, Nanjing High-tech Development Zone, Jiangsu Province

Patentee before: Nanjing Guanya Power Equipment Co., Ltd.

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20171003

Termination date: 20190928