电机与控制学报
電機與控製學報
전궤여공제학보
ECTRIC MACHINES AND CONTROL
2015年
5期
7-13
,共7页
频率分叉%感应耦合电能传输%自持振荡控制%零电压开通
頻率分扠%感應耦閤電能傳輸%自持振盪控製%零電壓開通
빈솔분차%감응우합전능전수%자지진탕공제%령전압개통
bifurcation%ICPT%SSOC%ZVS
串并联补偿型感应耦合电能传输( inductively coupled power transfer, ICPT)系统在负载变轻时会发生频率分叉现象,传统变频控制的方法难以使系统稳定。针对这一问题,将自持振荡控制( self-sustain oscillation control, SSOC)理论应用到ICPT系统中。首先,分析变频控制下发生频率分叉时ICPT系统不稳定的原因。其次,用描述函数法建立ICPT系统的自持振荡控制系统,并通过Nyquist稳定性判据分析了系统的稳定性。最后,在实验样机上实现了ICPT系统的自持振荡控制。当负载变轻而发生频率分叉现象时,自持振荡器可以使系统自由振荡而趋于稳定,其动态性能良好,并且始终保持开关管的零电压开通( zero voltage switch, ZVS)状态。
串併聯補償型感應耦閤電能傳輸( inductively coupled power transfer, ICPT)繫統在負載變輕時會髮生頻率分扠現象,傳統變頻控製的方法難以使繫統穩定。針對這一問題,將自持振盪控製( self-sustain oscillation control, SSOC)理論應用到ICPT繫統中。首先,分析變頻控製下髮生頻率分扠時ICPT繫統不穩定的原因。其次,用描述函數法建立ICPT繫統的自持振盪控製繫統,併通過Nyquist穩定性判據分析瞭繫統的穩定性。最後,在實驗樣機上實現瞭ICPT繫統的自持振盪控製。噹負載變輕而髮生頻率分扠現象時,自持振盪器可以使繫統自由振盪而趨于穩定,其動態性能良好,併且始終保持開關管的零電壓開通( zero voltage switch, ZVS)狀態。
천병련보상형감응우합전능전수( inductively coupled power transfer, ICPT)계통재부재변경시회발생빈솔분차현상,전통변빈공제적방법난이사계통은정。침대저일문제,장자지진탕공제( self-sustain oscillation control, SSOC)이론응용도ICPT계통중。수선,분석변빈공제하발생빈솔분차시ICPT계통불은정적원인。기차,용묘술함수법건립ICPT계통적자지진탕공제계통,병통과Nyquist은정성판거분석료계통적은정성。최후,재실험양궤상실현료ICPT계통적자지진탕공제。당부재변경이발생빈솔분차현상시,자지진탕기가이사계통자유진탕이추우은정,기동태성능량호,병차시종보지개관관적령전압개통( zero voltage switch, ZVS)상태。
Bifurcation occurs in the Series-Parallel compensation type IPCT ( inductively coupled power transfer, ICPT) system, when load become light. By using traditional VF ( vary frequency) control meth-od, this system is unstable. Aiming at this problem, the SSOC (Self-sustain oscillation control, SSOC) theory was applied to the ICPT system. First, the reason of ICPT system under VF control with bifurcation was explained. Then, ICPT system based on SSOC is derived by describe function method and the stabili-ty of the self-sustained oscillation was investigated using Nyquist stable criterion. Then, an ICPT system based on SSOC prototype was constructed. Finally, experimental results show that, when bifurcation oc-curred, this system can become stable under the control of SSOC. It has a good dynamic performance at the same time. Furthermore, SSOC system can keep the power switch always under ZVS ( zeros voltage switch, ZVS) .
